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emacs/configure.ac
Philipp Stephani a60053f836 Use posix_spawn if possible. 
posix_spawn is less error-prone than vfork + execve, and can make
better use of system-specific enhancements like 'clone' on Linux.  Use
it if we don't need to configure a pseudoterminal.

* configure.ac (HAVE_SPAWN_H, HAVE_POSIX_SPAWN)
(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR)
(HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP)
(HAVE_POSIX_SPAWNATTR_SETFLAGS, HAVE_DECL_POSIX_SPAWN_SETSID): New
configuration variables.
* src/callproc.c (USABLE_POSIX_SPAWN): New configuration macro.
(emacs_posix_spawn_init_actions)
(emacs_posix_spawn_init_attributes, emacs_posix_spawn_init): New
helper functions.
(emacs_spawn): Use posix_spawn if possible.
2021-11-11 22:00:03 +01:00

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dnl Autoconf script for GNU Emacs
dnl To rebuild the 'configure' script from this, execute the command
dnl autoconf
dnl in the directory containing this script.
dnl If you changed any AC_DEFINES, also run autoheader.
dnl
dnl Copyright (C) 1994-1996, 1999-2021 Free Software Foundation, Inc.
dnl
dnl This file is part of GNU Emacs.
dnl
dnl GNU Emacs is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation, either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl GNU Emacs is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
AC_PREREQ(2.65)
dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
AC_INIT(GNU Emacs, 29.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
dnl and then quoted again for a C string. Separate options with spaces.
dnl Add some environment variables, if they were passed via the environment
dnl rather than on the command-line.
emacs_config_options=
optsep=
dnl This is the documented way to record the args passed to configure,
dnl rather than $ac_configure_args.
for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
case $opt in
-n | --no-create | --no-recursion)
continue ;;
CFLAGS | CPPFLAGS | LDFLAGS)
eval 'test "${'$opt'+set}" = set' || continue
case " $*" in
*" $opt="*) continue ;;
esac
eval opt=$opt=\$$opt ;;
esac
emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
case $opt in
*[["$emacs_shell_specials"]]*)
case $opt in
*\'*)
emacs_quote_apostrophes="s/'/'\\\\''/g"
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
esac
opt="'$opt'"
case $opt in
*[['"\\']]*)
emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
esac ;;
esac
AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
optsep=' '
done
AC_CONFIG_HEADERS(src/config.h:src/config.in)
AC_CONFIG_SRCDIR(src/lisp.h)
AC_CONFIG_AUX_DIR(build-aux)
AC_CONFIG_MACRO_DIR(m4)
xcsdkdir=
AC_CHECK_PROGS(XCRUN, [xcrun])
if test -n "$XCRUN"; then
if test -z "$MAKE"; then
dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
dnl the usual MAKE variable that 'make' itself uses.
AC_CHECK_PROG([MAKE_PROG], [make], [yes])
if test -z "$MAKE_PROG"; then
MAKE="$XCRUN MAKE"
export MAKE
xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
fi
fi
fi
dnl Check for GNU Make and possibly set MAKE.
[emacs_check_gnu_make ()
{
emacs_makeout=`($1 --version) 2>/dev/null` &&
case $emacs_makeout in
'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
ac_path_MAKE_found=:;;
esac
}]
AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
[ac_path_MAKE_found=false
if test -n "$MAKE"; then
emacs_check_gnu_make "$MAKE"
ac_cv_path_MAKE=$MAKE
else
emacs_tried_make=false
emacs_tried_gmake=false
emacs_tried_gnumake=false
AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
[[emacs_check_gnu_make "$ac_path_MAKE"
if $ac_path_MAKE_found; then
# Use the fully-qualified program name only if the basename
# would not resolve to it.
if eval \$emacs_tried_$ac_prog; then
ac_cv_path_MAKE=$ac_path_MAKE
else
ac_cv_path_MAKE=$ac_prog
fi
fi
eval emacs_tried_$ac_prog=:]])
fi])
$ac_path_MAKE_found || {
AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
If you have it installed under another name, configure with 'MAKE=...'.
For example, run '$0 MAKE=gnu-make'.]])
}
MAKE=$ac_cv_path_MAKE
export MAKE
dnl Canonicalize the configuration name.
AC_CANONICAL_HOST
case $host in
*-mingw*)
if test -z "$host_alias"; then
# No --host argument was given to 'configure'; therefore $host
# was set to a default value based on the build platform. But
# this default value may be wrong if we are building from a
# 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
# Therefore, we'll try to get the right host platform from the
# compiler's target.
AC_MSG_CHECKING([the compiler's target])
if test -z "$CC"; then
cc=gcc
else
cc=$CC
fi
cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
case "$cc_target" in
*-*) host=$cc_target
;;
"") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
Please explicitly provide --host.])
;;
*) AC_MSG_WARN([Compiler reported non-standard target.
Defaulting to $host.])
;;
esac
AC_MSG_RESULT([$host])
fi
. $srcdir/nt/mingw-cfg.site
case $srcdir in
/* | ?:*)
# srcdir is an absolute path. In this case, force the format
# "/c/foo/bar", to simplify later conversions to native Windows
# format ("c:/foo/bar").
srcdir=`cd "${srcdir}" && pwd -W`
# 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
# We downcase the drive letter to avoid warnings when
# generating autoloads.
eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
;;
esac;;
esac
canonical=$host
configuration=${host_alias-${build_alias-$host}}
emacs_uname_r=`uname -r`
dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM
dnl It is important that variables on the RHS not be expanded here,
dnl hence the single quotes. This is per the GNU coding standards, see
dnl (autoconf) Installation Directory Variables
dnl See also epaths.h below.
lispdirrel='${version}/lisp'
lispdir='${datadir}/emacs/'${lispdirrel}
standardlisppath='${lispdir}'
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${standardlisppath}'
etcdir='${datadir}/emacs/${version}/etc'
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
etcdocdir='${datadir}/emacs/${version}/etc'
gamedir='${localstatedir}/games/emacs'
dnl Special option to disable the most of other options.
AC_ARG_WITH(all,
[AS_HELP_STRING([--without-all],
[omit almost all features and build
small executable with minimal dependencies])],
[with_features=$withval],
[with_features=yes])
dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being disabled.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set to either the user's value (if the option is
dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
dnl option is not specified). Note that the shell variable name is
dnl constructed as autoconf does, by replacing non-alphanumeric
dnl characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl
dnl OPTION_DEFAULT_IFAVAILABLE(NAME, HELP-STRING)
dnl Create a new --with option that defaults to 'ifavailable'.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set to either the user's value (if the option is
dnl specified; 'yes' for a plain --with-NAME) or to 'ifavailable' (if the
dnl option is not specified). Note that the shell variable name is
dnl constructed as autoconf does, by replacing non-alphanumeric
dnl characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_IFAVAILABLE], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=ifavailable])dnl
])dnl
dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
dnl Create a new --with option that defaults to $with_features.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set either to 'no' (for a plain --without-NAME) or to
dnl 'yes' (if the option is not specified). Note that the shell
dnl variable name is constructed as autoconf does, by replacing
dnl non-alphanumeric characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_ON], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
])dnl
# For retrieving mail, unencrypted network connections are the default
# only on native MS-Windows platforms. (FIXME: These platforms should
# also be secure by default.)
AC_ARG_WITH([mailutils],
[AS_HELP_STRING([--with-mailutils],
[rely on GNU Mailutils, so that the --without-pop through --with-mailhost
options are irrelevant; this is the default if GNU Mailutils is
installed])],
[],
[with_mailutils=$with_features
if test "$with_mailutils" = yes; then
(movemail --version) >/dev/null 2>&1 || with_mailutils=no
fi])
if test "$with_mailutils" = no; then
with_mailutils=
fi
AC_SUBST([with_mailutils])
AC_ARG_WITH([pop],
[AS_HELP_STRING([--with-pop],
[Support POP mail retrieval if Emacs movemail is used (not recommended,
as Emacs movemail POP is insecure). This is the default only on
native MS-Windows.])],
[],
[case $host in
*-mingw*) with_pop=yes;;
*) with_pop=no-by-default;;
esac])
if test "$with_pop" = yes; then
AC_DEFINE(MAIL_USE_POP)
fi
AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
if test "$with_kerberos" != no; then
AC_DEFINE(KERBEROS)
fi
AH_TEMPLATE(KERBEROS,
[Define to support Kerberos-authenticated POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
if test "${with_kerberos5}" != no; then
if test "${with_kerberos}" = no; then
with_kerberos=yes
AC_DEFINE(KERBEROS)
fi
AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
fi
OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
if test "$with_hesiod" != no; then
AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
fi
OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
if test "$with_mail_unlink" != no; then
AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
fi
AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
[string giving default POP mail host])],
AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
[compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
[ case "${withval}" in
yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
*) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
;;
esac
with_sound=$val
],
[with_sound=$with_features])
AC_ARG_WITH([pdumper],
AS_HELP_STRING(
[--with-pdumper=VALUE],
[enable pdumper support unconditionally
('yes', 'no', or 'auto': default 'auto')]),
[ case "${withval}" in
yes|no|auto) val=$withval ;;
*) AC_MSG_ERROR(
['--with-pdumper=$withval' is invalid;
this option's value should be 'yes' or 'no'.]) ;;
esac
with_pdumper=$val
],
[with_pdumper=auto])
AC_ARG_WITH([unexec],
AS_HELP_STRING(
[--with-unexec=VALUE],
[enable unexec support unconditionally
('yes', 'no', or 'auto': default 'auto')]),
[ case "${withval}" in
yes|no|auto) val=$withval ;;
*) AC_MSG_ERROR(
['--with-unexec=$withval' is invalid;
this option's value should be 'yes' or 'no'.]) ;;
esac
with_unexec=$val
],
[with_unexec=auto])
AC_ARG_WITH([dumping],[AS_HELP_STRING([--with-dumping=VALUE],
[kind of dumping to use for initial Emacs build
(VALUE one of: pdumper, unexec, none; default pdumper)])],
[ case "${withval}" in
pdumper|unexec|none) val=$withval ;;
*) AC_MSG_ERROR(['--with-dumping=$withval is invalid;
this option's value should be 'pdumper', 'unexec', or 'none'.])
;;
esac
with_dumping=$val
],
[with_dumping=pdumper])
if test "$with_pdumper" = "auto"; then
if test "$with_dumping" = "pdumper"; then
with_pdumper=yes
else
with_pdumper=no
fi
fi
if test "$with_unexec" = "auto"; then
if test "$with_dumping" = "unexec"; then
with_unexec=yes
else
with_unexec=no
fi
fi
if test "$with_dumping" = "pdumper" && test "$with_pdumper" = "no"; then
AC_MSG_ERROR(['--with-dumping=pdumper' requires pdumper support])
fi
if test "$with_dumping" = "unexec" && test "$with_unexec" = "no"; then
AC_MSG_ERROR(['--with-dumping=unexec' requires unexec support])
fi
if test "$with_pdumper" = "yes"; then
AC_DEFINE([HAVE_PDUMPER], 1, [Define to build with portable dumper support])
HAVE_PDUMPER=yes
else
HAVE_PDUMPER=no
fi
AC_SUBST([HAVE_PDUMPER])
DUMPING=$with_dumping
AC_SUBST(DUMPING)
dnl FIXME currently it is not the last.
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the file name of X, and it's best to
dnl keep them together visually.
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
[use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, no)])],
[ case "${withval}" in
y | ye | yes ) val=gtk ;;
n | no ) val=no ;;
l | lu | luc | luci | lucid ) val=lucid ;;
a | at | ath | athe | athen | athena ) val=athena ;;
g | gt | gtk ) val=gtk ;;
gtk2 ) val=gtk2 ;;
gtk3 ) val=gtk3 ;;
* )
AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
this option's value should be 'yes', 'no', 'lucid', 'athena', 'gtk',
'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
'athena' and 'lucid' are synonyms.])
;;
esac
with_x_toolkit=$val
])
OPTION_DEFAULT_OFF([wide-int],
[prefer wide Emacs integers (typically 62-bit);
on 32-bit hosts, this allows buffer and string size up to 2GB,
at the cost of 10% to 30% slowdown of Lisp interpreter
and larger memory footprint])
if test "$with_wide_int" = yes; then
AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
fi
dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
with_xpm_set=${with_xpm+set}
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
OPTION_DEFAULT_ON([webp],[don't compile with WebP image support])
OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
OPTION_DEFAULT_ON([cairo],[don't compile with Cairo drawing])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_OFF([imagemagick],[compile with ImageMagick image support])
OPTION_DEFAULT_ON([native-image-api], [don't use native image APIs (GDI+ on Windows)])
OPTION_DEFAULT_IFAVAILABLE([json], [compile with native JSON support])
OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
OPTION_DEFAULT_ON([harfbuzz],[don't use HarfBuzz for text shaping])
OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Xaw3d/GTK toolkit scroll bars])
OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
OPTION_DEFAULT_ON([xim],[at runtime, default X11 XIM to off])
OPTION_DEFAULT_ON([xdbe],[don't use X11 double buffering support])
AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
[use Nextstep (macOS Cocoa or GNUstep) windowing system.
On by default on macOS.])],[],[with_ns=maybe])
OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
[compile with Gconf support (Gsettings replaces this)])],[],
[if test $with_features = yes; then
with_gconf=maybe
else
with_gconf=no
fi])
OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
OPTION_DEFAULT_ON([modules],[don't compile with dynamic modules support])
OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
OPTION_DEFAULT_OFF([native-compilation],[compile with Emacs Lisp native compiler support])
OPTION_DEFAULT_OFF([cygwin32-native-compilation],[use native compilation on 32-bit Cygwin])
AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
[use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
[ case "${withval}" in
y | ye | yes ) val=yes ;;
n | no ) val=no ;;
i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
g | gf | gfi | gfil | gfile ) val=gfile ;;
w | w3 | w32 ) val=w32 ;;
* ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
;;
esac
with_file_notification=$val
],
[with_file_notification=$with_features])
OPTION_DEFAULT_OFF([xwidgets],
[enable use of xwidgets in Emacs buffers (requires gtk3 or macOS Cocoa)])
## Makefile.in needs the cache file name.
AC_SUBST(cache_file)
## This is an option because I do not know if all info/man support
## compressed files, nor how to test if they do so.
OPTION_DEFAULT_ON([compress-install],
[don't compress some files (.el, .info, etc.) when installing. Equivalent to:
make GZIP_PROG= install])
AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
[user for shared game score files.
An argument prefixed by ':' specifies a group instead.])])
gameuser=
gamegroup=
case ${with_gameuser} in
'' | no) ;;
yes) gamegroup=games ;;
:*) gamegroup=${with_gameuser#:} ;;
*) gameuser=${with_gameuser} ;;
esac
AC_ARG_WITH([gnustep-conf],dnl
[AS_HELP_STRING([--with-gnustep-conf=FILENAME],
[name of GNUstep configuration file to use on systems where the command
'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
/etc/GNUstep/GNUstep.conf])])
test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
test "X$GNUSTEP_CONFIG_FILE" = "X" && \
GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
AC_ARG_ENABLE(ns-self-contained,
[AS_HELP_STRING([--disable-ns-self-contained],
[disable self contained build under NeXTstep])],
EN_NS_SELF_CONTAINED=$enableval,
EN_NS_SELF_CONTAINED=yes)
locallisppathset=no
AC_ARG_ENABLE(locallisppath,
[AS_HELP_STRING([--enable-locallisppath=PATH],
[directories Emacs should search for lisp files specific
to this site])],
if test "${enableval}" = "no"; then
locallisppath=
elif test "${enableval}" != "yes"; then
locallisppath=${enableval} locallisppathset=yes
fi)
AC_ARG_ENABLE(checking,
[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
[enable expensive checks. With LIST,
enable only specific categories of checks.
Categories are: all,yes,no.
Flags are: stringbytes, stringoverrun, stringfreelist,
structs, glyphs])],
[ac_checking_flags="${enableval}"],[])
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
CHECK_STRUCTS=false
for check in $ac_checking_flags
do
case $check in
# these set all the flags to specific states
yes) ac_enable_checking=1 ;;
no) ac_enable_checking= ;
CHECK_STRUCTS=false
ac_gc_check_stringbytes= ;
ac_gc_check_string_overrun= ;
ac_gc_check_string_free_list= ;
ac_glyphs_debug= ;;
all) ac_enable_checking=1 ;
CHECK_STRUCTS=true
ac_gc_check_stringbytes=1 ;
ac_gc_check_string_overrun=1 ;
ac_gc_check_string_free_list=1 ;
ac_glyphs_debug=1 ;;
# these enable particular checks
stringbytes) ac_gc_check_stringbytes=1 ;;
stringoverrun) ac_gc_check_string_overrun=1 ;;
stringfreelist) ac_gc_check_string_free_list=1 ;;
structs) CHECK_STRUCTS=true ;;
glyphs) ac_glyphs_debug=1 ;;
*) AC_MSG_ERROR(unknown check category $check) ;;
esac
done
IFS="$ac_save_IFS"
if test x$ac_enable_checking != x ; then
AC_DEFINE(ENABLE_CHECKING, 1,
[Define to 1 if expensive run-time data type and consistency checks are enabled.])
fi
if $CHECK_STRUCTS; then
AC_DEFINE([CHECK_STRUCTS], 1,
[Define this to check whether someone updated the portable dumper
code after changing the layout of a structure that it uses.
If you change one of these structures, check that the pdumper.c
code is still valid, and update the pertinent hash in pdumper.c
by manually copying the hash from the newly-generated dmpstruct.h.])
fi
AC_SUBST([CHECK_STRUCTS])
if test x$ac_gc_check_stringbytes != x ; then
AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
[Define this temporarily to hunt a bug. If defined, the size of
strings is redundantly recorded in sdata structures so that it can
be compared to the sizes recorded in Lisp strings.])
fi
if test x$ac_gc_check_string_overrun != x ; then
AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
[Define this to check for short string overrun.])
fi
if test x$ac_gc_check_string_free_list != x ; then
AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
[Define this to check the string free list.])
fi
if test x$ac_glyphs_debug != x ; then
AC_DEFINE(GLYPH_DEBUG, 1,
[Define this to enable glyphs debugging code.])
fi
dnl The name of this option is unfortunate. It predates, and has no
dnl relation to, the "sampling-based elisp profiler" added in 24.3.
dnl Actually, it stops it working.
dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
AC_ARG_ENABLE(profiling,
[AS_HELP_STRING([--enable-profiling],
[build emacs with low-level, gprof profiling support.
Mainly useful for debugging Emacs itself. May not work on
all platforms. Stops profiler.el working.])],
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
PROFILING_CFLAGS="-DPROFILING=1 -pg"
else
PROFILING_CFLAGS=
fi
AC_SUBST(PROFILING_CFLAGS)
AC_ARG_ENABLE(autodepend,
[AS_HELP_STRING([--enable-autodepend],
[automatically generate dependencies to .h-files.
Requires gcc, enabled if found.])],
[ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
AC_ARG_ENABLE(gtk-deprecation-warnings,
[AS_HELP_STRING([--enable-gtk-deprecation-warnings],
[Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
[ac_enable_gtk_deprecation_warnings="${enableval}"],[])
BUILD_DETAILS=
AC_ARG_ENABLE([build-details],
[AS_HELP_STRING([--disable-build-details],
[Make the build more deterministic by omitting host
names, time stamps, etc. from the output.])],
[test "$enableval" = no && BUILD_DETAILS=--no-build-details])
AC_SUBST([BUILD_DETAILS])
dnl This used to use changequote, but, apart from 'changequote is evil'
dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
dnl the great gob of text. Thus it's not processed for possible expansion.
dnl Just make sure the brackets remain balanced.
dnl
dnl Since Emacs can't find matching pairs of quotes, boundaries are
dnl indicated by comments.
dnl quotation begins
[
### If you add support for a new configuration, add code to this
### switch statement to recognize your configuration name and select
### the appropriate opsys.
### As far as handling version numbers on operating systems is
### concerned, make sure things will fail in a fixable way. If
### /etc/MACHINES doesn't say anything about version numbers, be
### prepared to handle anything reasonably. If version numbers
### matter, be sure /etc/MACHINES says something about it.
opsys='' unported=no
case "${canonical}" in
## GNU/Linux and similar ports
*-*-linux* )
opsys=gnu-linux
;;
## FreeBSD ports
*-*-freebsd* )
opsys=freebsd
;;
## DragonFly ports
*-*-dragonfly* )
opsys=dragonfly
;;
## FreeBSD kernel + glibc based userland
*-*-kfreebsd*gnu* )
opsys=gnu-kfreebsd
;;
## NetBSD ports
*-*-netbsd* )
opsys=netbsd
;;
## OpenBSD ports
*-*-openbsd* | *-*-mirbsd* )
opsys=openbsd
;;
## Apple Darwin / macOS
*-apple-darwin* )
case "${canonical}" in
*-apple-darwin[0-9].*) unported=yes ;;
i[3456]86-* | x86_64-* | arm-* | aarch64-* ) ;;
* ) unported=yes ;;
esac
opsys=darwin
## FIXME: Find a way to use Fink if available (Bug#11507).
;;
## Chromium Native Client
*-nacl )
opsys=nacl
;;
## Cygwin ports
*-*-cygwin )
opsys=cygwin
;;
## HP 9000 series 700 and 800, running HP/UX
hppa*-hp-hpux10.2* )
opsys=hpux10-20
;;
hppa*-hp-hpux1[1-9]* )
opsys=hpux11
CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
;;
## IBM machines
rs6000-ibm-aix4.[23]* )
opsys=aix4-2
;;
powerpc-ibm-aix4.[23]* )
opsys=aix4-2
;;
rs6000-ibm-aix[56]* )
opsys=aix4-2
;;
powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
opsys=aix4-2
;;
## Solaris
*-*-solaris* | *-*-sunos*)
case "${canonical}" in
i[3456]86-*-* ) ;;
amd64-*-*|x86_64-*-*) ;;
sparc* ) ;;
* ) unported=yes ;;
esac
opsys=solaris
## Watch out for a compiler that we know will not work.
if [ "$CC" = /usr/ucb/cc ]; then
## /usr/ucb/cc doesn't work;
## we should find some other compiler that does work.
unset CC
fi
;;
## QNX Neutrino
*-nto-qnx* )
opsys=qnxnto
test -z "$CC" && CC=qcc
LDFLAGS="-N2M $LDFLAGS"
;;
## Intel 386 machines where we don't care about the manufacturer.
i[3456]86-*-* )
case "${canonical}" in
*-darwin* ) opsys=darwin ;;
*-mingw* )
opsys=mingw32
# MinGW overrides and adds some system headers in nt/inc.
GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
;;
*-sysv4.2uw* ) opsys=unixware ;;
*-sysv5uw* ) opsys=unixware ;;
*-sysv5OpenUNIX* ) opsys=unixware ;;
## Otherwise, we'll fall through to the generic opsys code at the bottom.
esac
;;
# MinGW64
x86_64-*-* )
case "${canonical}" in
*-mingw* )
opsys=mingw32
# MinGW overrides and adds some system headers in nt/inc.
GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
;;
## Otherwise, we'll fall through to the generic opsys code at the bottom.
esac
;;
* )
unported=yes
;;
esac
### If the code above didn't choose an operating system, just choose
### an operating system based on the configuration name. You really
### only want to use this when you have no idea what the right
### operating system is; if you know what operating systems a machine
### runs, it's cleaner to make it explicit in the case statement
### above.
if test x"${opsys}" = x; then
case "${canonical}" in
*-gnu* ) opsys=gnu ;;
* )
unported=yes
;;
esac
fi
]
dnl quotation ends
if test $unported = yes; then
AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
Check 'etc/MACHINES' for recognized configuration names.])
fi
#### Choose a compiler.
dnl Don't bother to test for C89.
AC_DEFUN([_AC_PROG_CC_C89], [$2])
dnl Sets GCC=yes if using gcc.
AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
if test -n "$XCRUN"; then
AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
test -n "$AR" && export AR
fi
dnl Emacs needs C99 or later.
gl_PROG_CC_C99
AC_PROG_CC_C_O
if test x$GCC = xyes; then
test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
fi
# Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
AC_DEFUN([gl_CRYPTO_CHECK])
# Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
# as we don't use them.
AC_DEFUN([gl_FCNTL_O_FLAGS])
# Avoid gnulib's test for pthread_sigmask.
funcs=
for func in $ac_func_list; do
test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
done
ac_func_list=$funcs
# Emacs does not use the wchar or wctype-h modules.
AC_DEFUN([gt_TYPE_WINT_T],
[GNULIBHEADERS_OVERRIDE_WINT_T=0
AC_SUBST([GNULIBHEADERS_OVERRIDE_WINT_T])])
# Initialize gnulib right after choosing the compiler.
dnl Amongst other things, this sets AR and ARFLAGS.
gl_EARLY
if test "$ac_test_CFLAGS" != set; then
# It's helpful to have C macros available to GDB, so prefer -g3 to -g
# if -g3 works and the user does not specify CFLAGS.
# This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
case $CFLAGS in
'-g')
emacs_g3_CFLAGS='-g3';;
'-g -O2')
emacs_g3_CFLAGS='-g3 -O2';;
*)
emacs_g3_CFLAGS='';;
esac
if test -n "$emacs_g3_CFLAGS"; then
emacs_save_CFLAGS=$CFLAGS
CFLAGS=$emacs_g3_CFLAGS
AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
[emacs_cv_prog_cc_g3],
[AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[emacs_cv_prog_cc_g3=yes],
[emacs_cv_prog_cc_g3=no])])
if test $emacs_cv_prog_cc_g3 != yes; then
CFLAGS=$emacs_save_CFLAGS
fi
if test $opsys = mingw32; then
CFLAGS="$CFLAGS -gdwarf-2"
fi
fi
case $CFLAGS in
*-O*) ;;
*)
# No optimization flag was inferred for this non-GCC compiler.
# Try -O. This is needed for xlc on AIX; see Bug#14258.
emacs_save_CFLAGS=$CFLAGS
test -z "$CFLAGS" || CFLAGS="$CFLAGS "
CFLAGS=${CFLAGS}-O
AC_CACHE_CHECK([whether $CC accepts -O],
[emacs_cv_prog_cc_o],
[AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[emacs_cv_prog_cc_o=yes],
[emacs_cv_prog_cc_o=no])])
if test $emacs_cv_prog_cc_o != yes; then
CFLAGS=$emacs_save_CFLAGS
fi ;;
esac
fi
# gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
# ---------------------------------------------------------------------------
# If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
# Otherwise, run RUN-IF-NOT-FOUND.
AC_DEFUN([gl_GCC_VERSION_IFELSE],
[AC_PREPROC_IFELSE(
[AC_LANG_PROGRAM(
[[
#if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
/* ok */
#else
# error "your version of gcc is older than $1.$2"
#endif
]]),
], [$3], [$4])
]
)
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
[control generation of GCC warnings. The TYPE 'yes'
means to fail if any warnings are issued; 'warn-only'
means issue warnings without failing (default for
developer builds); 'no' means disable warnings
(default for non-developer builds).])],
[case $enableval in
yes|no|warn-only) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
esac
gl_gcc_warnings=$enableval],
[# By default, use 'warn-only' if it looks like the invoker of 'configure'
# is a developer as opposed to a builder. This is most likely true
# if GCC is recent enough and there is a .git directory or file;
# however, if there is also a .tarball-version file it is probably
# just a release imported into Git for patch management.
gl_gcc_warnings=no
if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
fi])
AC_ARG_ENABLE([check-lisp-object-type],
[AS_HELP_STRING([--enable-check-lisp-object-type],
[Enable compile time checks for the Lisp_Object data type,
which can catch some bugs during development.])])
if test "$enable_check_lisp_object_type" = yes; then
AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
[Define to enable compile-time checks for the Lisp_Object data type.])
fi
# clang is unduly picky about some things.
AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#ifndef __clang__
error "not clang";
#endif
]])],
[emacs_cv_clang=yes],
[emacs_cv_clang=no])])
WERROR_CFLAGS=
# When compiling with GCC, prefer -isystem to -I when including system
# include files, to avoid generating useless diagnostics for the files.
AS_IF([test $gl_gcc_warnings = no],
[
isystem='-I'
AS_IF([test "$emacs_cv_clang" = yes],
[
# Turn off some warnings if supported.
gl_WARN_ADD([-Wno-switch])
gl_WARN_ADD([-Wno-pointer-sign])
gl_WARN_ADD([-Wno-string-plus-int])
gl_WARN_ADD([-Wno-unknown-attributes])
])
],[
isystem='-isystem '
# This, $nw, is the list of warnings we disable.
nw=
case $with_x_toolkit in
lucid | athena | motif)
# Old toolkits mishandle 'const'.
nw="$nw -Wwrite-strings"
;;
esac
AS_IF([test $gl_gcc_warnings = yes],
[WERROR_CFLAGS=-Werror],
[# Use -fanalyzer and related options only if --enable-gcc-warnings,
# as they slow GCC considerably.
nw="$nw -fanalyzer -Wno-analyzer-double-free -Wno-analyzer-malloc-leak"
nw="$nw -Wno-analyzer-null-dereference -Wno-analyzer-use-after-free"
# Use -Wsuggest-attribute=malloc only if --enable-gcc-warnings,
# as it doesn't flag code that is wrong in any way.
nw="$nw -Wsuggest-attribute=malloc"])
nw="$nw -Wcast-align=strict" # Emacs is tricky with pointers.
nw="$nw -Wduplicated-branches" # Too many false alarms
nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
nw="$nw -Woverlength-strings" # Not a problem these days
nw="$nw -Wvla" # Emacs uses <vla.h>.
nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
nw="$nw -Winline" # OK to ignore 'inline'
nw="$nw -Wstrict-overflow" # OK to optimize assuming that
# signed overflow has undefined behavior
nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
nw="$nw -Wbad-function-cast" # These casts are no worse than others.
# Emacs doesn't care about shadowing; see
# <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
nw="$nw -Wshadow"
# Emacs's use of alloca inhibits protecting the stack.
nw="$nw -Wstack-protector"
# Emacs's use of __attribute__ ((cold)) causes false alarms with this option.
nw="$nw -Wsuggest-attribute=cold"
# Emacs's use of partly-const functions such as Fgnutls_available_p
# make this option problematic.
nw="$nw -Wsuggest-attribute=const"
# Emacs's use of partly-pure functions such as CHECK_TYPE make this
# option problematic.
nw="$nw -Wsuggest-attribute=pure"
if test "$emacs_cv_clang" = yes; then
nw="$nw -Wdouble-promotion"
fi
# This causes too much noise in the MinGW build.
if test $opsys = mingw32; then
nw="$nw -Wsuggest-attribute=format"
fi
gl_MANYWARN_ALL_GCC([ws])
gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
for w in $ws; do
gl_WARN_ADD([$w])
done
gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
gl_WARN_ADD([-Wno-format-nonliteral])
# clang is unduly picky about some things.
if test "$emacs_cv_clang" = yes; then
gl_WARN_ADD([-Wno-missing-braces])
gl_WARN_ADD([-Wno-null-pointer-arithmetic])
fi
# This causes too much noise in the MinGW build
if test $opsys = mingw32; then
gl_WARN_ADD([-Wno-pointer-sign])
fi
AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
AS_IF([test $gl_gcc_warnings = yes],
[AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
[/* Enable compile-time and run-time bounds-checking, and some warnings,
without upsetting glibc 2.15+. */
#if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
&& defined __OPTIMIZE__ && __OPTIMIZE__)
# define _FORTIFY_SOURCE 2
#endif
])])
])
# clang is picky about these regardless of whether
# --enable-gcc-warnings is specified.
if test "$emacs_cv_clang" = yes; then
gl_WARN_ADD([-Wno-initializer-overrides])
gl_WARN_ADD([-Wno-tautological-compare])
gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
fi
# Use a slightly smaller set of warning options for lib/.
nw=
nw="$nw -Wunused-macros"
gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
AC_SUBST([WERROR_CFLAGS])
AC_SUBST([GNULIB_WARN_CFLAGS])
edit_cflags="
s,///*,/,g
s/^/ /
s/ -I/ $isystem/g
s/^ //
"
AC_ARG_ENABLE(link-time-optimization,
[AS_HELP_STRING([--enable-link-time-optimization],
[build with link-time optimization
(experimental; see INSTALL)])],
if test "${enableval}" != "no"; then
ac_lto_supported=no
if test "$emacs_cv_clang" = yes; then
AC_MSG_CHECKING([whether link-time optimization is supported by clang])
GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
if test -x "$GOLD_PLUGIN"; then
LTO="-flto"
fi
elif test x$GCC = xyes; then
AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
if test x$CPUS != x; then
LTO="-flto=$CPUS"
else
LTO="-flto"
fi
else
AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
fi
if test -z "$LTO"; then
ac_lto_supported=no
else
old_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $LTO"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[ac_lto_supported=yes], [ac_lto_supported=no])
CFLAGS="$old_CFLAGS"
fi
AC_MSG_RESULT([$ac_lto_supported])
if test "$ac_lto_supported" = "yes"; then
CFLAGS="$CFLAGS $LTO"
if test "$emacs_cv_clang" = yes; then
AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
# WARNING: 'ar --plugin ...' doesn't work without
# command, so plugin name is appended to ARFLAGS.
ARFLAGS="cru --plugin $GOLD_PLUGIN"
RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
else
dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
dnl dump core on Fedora 20, so play it safe for now.
gl_COMPILER_OPTION_IF([-ffat-lto-objects],
[CFLAGS="$CFLAGS -ffat-lto-objects"])
fi
fi
fi)
dnl Automake replacements.
AC_DEFUN([AM_CONDITIONAL],
[$2 && $1=1 || $1=
AC_SUBST([$1])])
dnl Prefer silent make output. For verbose output, use
dnl 'configure --disable-silent-rules' or 'make V=1' .
AC_ARG_ENABLE([silent-rules],
[AS_HELP_STRING(
[--disable-silent-rules],
[verbose build output (undo: "make V=0")])])
if test "$enable_silent_rules" = no; then
AM_DEFAULT_VERBOSITY=1
else
AM_DEFAULT_VERBOSITY=0
fi
AC_SUBST([AM_DEFAULT_VERBOSITY])
AC_CONFIG_FILES([src/verbose.mk])
dnl Some other nice autoconf tests.
AC_PROG_INSTALL
dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
dnl AC_PROG_MKDIR_P
dnl if test "x$RANLIB" = x; then
dnl AC_PROG_RANLIB
dnl fi
dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
dnl can be made to directories. This is not relevant for our usage, and
dnl excludes some cases that work fine for us. Eg MS Windows or files
dnl hosted on AFS, both examples where simple links work, but links to
dnl directories fail. We use a cut-down version instead.
dnl AC_PROG_LN_S
AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
[rm -f conf$$ conf$$.file
emacs_cv_ln_s_fileonly='cp -p'
dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
dnl random program in the current directory.
if (echo >conf$$.file) 2>/dev/null; then
if test "$opsys" = "mingw32"; then
emacs_cv_ln_s_fileonly=/bin/ln
elif ln -s conf$$.file conf$$ 2>/dev/null; then
emacs_cv_ln_s_fileonly='ln -s'
elif ln conf$$.file conf$$ 2>/dev/null; then
emacs_cv_ln_s_fileonly=ln
fi
fi
rm -f conf$$ conf$$.file])
LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
AC_SUBST(LN_S_FILEONLY)
dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
dnl doesn't support links to directories, as in "ln file dir". But that
dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
dnl executables at "make install" time.
dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
dnl for more details.
if test "$opsys" = "mingw32"; then
LN_S="/bin/ln"
fi
dnl On some Debian versions, "install-info" prints irritating messages
dnl "This is not dpkg install-info anymore, but GNU install-info"
dnl if called via an absolute file name.
dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
dnl Sadly some people may have an old ginstall-info installed on
dnl non-Debian systems, so we can't use this.
dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
AC_PATH_PROG(INSTALL_INFO, install-info, :,
$PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
dnl Don't use GZIP, which is used by gzip for additional parameters.
AC_PATH_PROG(GZIP_PROG, gzip)
test $with_compress_install != yes && test -n "$GZIP_PROG" && \
GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
if test "$with_dumping" = "unexec" && test "$opsys" = "nacl"; then
AC_MSG_ERROR([nacl is not compatible with --with-dumping=unexec])
fi
AC_CACHE_CHECK([for 'find' args to delete a file],
[emacs_cv_find_delete],
[if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
test ! -f conftest.tmp
then emacs_cv_find_delete="-delete"
else emacs_cv_find_delete="-exec rm -f {} ';'"
fi])
FIND_DELETE=$emacs_cv_find_delete
AC_SUBST([FIND_DELETE])
PAXCTL_dumped=
PAXCTL_notdumped=
if test $with_unexec = yes && test $opsys = gnu-linux; then
if test "${SETFATTR+set}" != set; then
AC_CACHE_CHECK([for setfattr],
[emacs_cv_prog_setfattr],
[touch conftest.tmp
if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
emacs_cv_prog_setfattr=yes
else
emacs_cv_prog_setfattr=no
fi])
if test "$emacs_cv_prog_setfattr" = yes; then
PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
SETFATTR=setfattr
else
SETFATTR=
fi
fi
case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
gnu-linux,,* | netbsd,,[0-7].*)
AC_PATH_PROG([PAXCTL], [paxctl], [],
[$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
if test -n "$PAXCTL"; then
if test "$opsys" = netbsd; then
PAXCTL_dumped='$(PAXCTL) +a'
PAXCTL_notdumped=$PAXCTL_dumped
else
AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
[if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
PAXCTL=
fi])
if test -n "$PAXCTL"; then
PAXCTL_dumped='$(PAXCTL) -zex'
PAXCTL_notdumped='$(PAXCTL) -r'
fi
fi
fi;;
esac
fi
AC_SUBST([PAXCTL_dumped])
AC_SUBST([PAXCTL_notdumped])
AC_SUBST([SETFATTR])
# Makeinfo on macOS is ancient, check whether there is a more recent
# version installed by Homebrew.
AC_CHECK_PROGS(BREW, [brew])
if test -n "$BREW"; then
AC_PATH_PROG([MAKEINFO], [makeinfo], [],
[`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
fi
# Check MacPorts on macOS.
if test $opsys = darwin; then
AC_PATH_PROG(HAVE_MACPORTS, port)
fi
## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
: ${MAKEINFO:=makeinfo}
case `($MAKEINFO --version) 2>/dev/null` in
*' (GNU texinfo) '4.1[[3-9]]* | \
*' (GNU texinfo) '[[5-9]]* | \
*' (GNU texinfo) '[[1-9][0-9]]* ) ;;
*) MAKEINFO=no;;
esac
## Makeinfo is unusual. For a released Emacs, the manuals are
## pre-built, and not deleted by the normal clean rules. makeinfo is
## therefore in the category of "special tools" not normally required, which
## configure does not have to check for (eg autoconf itself).
## In a repository checkout on the other hand, the manuals are not included.
## So makeinfo is a requirement to build from the repository, and configure
## should test for it as it does for any other build requirement.
## We use the presence of $srcdir/info/emacs to distinguish a release,
## with pre-built manuals, from a repository checkout.
if test "$MAKEINFO" = "no"; then
MAKEINFO=makeinfo
if test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
source tree does not seem to have pre-built manuals in the 'info' directory.
Please install a suitable version of makeinfo.] )
else
AC_MSG_WARN( [You do not seem to have makeinfo >= 4.13.
You will not be able to rebuild the manuals if you delete them or change
their sources.] )
fi
fi
AC_SUBST([MAKEINFO])
if test $opsys = mingw32; then
DOCMISC_W32=efaq-w32
else
DOCMISC_W32=
fi
AC_SUBST(DOCMISC_W32)
dnl Add our options to ac_link now, after it is set up.
if test x$GCC = xyes; then
test "x$GCC_LINK_TEST_OPTIONS" != x && \
ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
else
test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
fi
dnl On some platforms using GNU ld, linking temacs needs -znocombreloc.
dnl Although this has something to do with dumping, the details are unknown.
dnl If the flag is used but not needed,
dnl Emacs should still work (albeit a bit more slowly),
dnl so use the flag everywhere that it is supported.
dnl When testing whether the flag works, treat GCC specially
dnl since it just gives a non-fatal 'unrecognized option'
dnl if not built to support GNU ld.
if test "$GCC" = yes; then
LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
else
LDFLAGS_NOCOMBRELOC="-znocombreloc"
fi
AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
[if test $with_unexec = no; then
emacs_cv_znocombreloc='not needed'
else
save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
[emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
LDFLAGS=$save_LDFLAGS
fi])
case $emacs_cv_znocombreloc in
no*)
LDFLAGS_NOCOMBRELOC= ;;
esac
AC_CACHE_CHECK([whether addresses are sanitized],
[emacs_cv_sanitize_address],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#ifndef __has_feature
#define __has_feature(f) 0
#endif
#if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
#else
error "Addresses are not sanitized.";
#endif
]])],
[emacs_cv_sanitize_address=yes],
[emacs_cv_sanitize_address=no])])
if test $with_unexec = yes; then
AC_DEFINE([HAVE_UNEXEC], 1, [Define if Emacs supports unexec.])
if test "$emacs_cv_sanitize_address" = yes; then
AC_MSG_WARN([[Addresses are sanitized; suggest --without-unexec]])
fi
fi
UNEXEC_OBJ=
test $with_unexec = yes &&
case "$opsys" in
# MSDOS uses unexcoff.o
aix4-2)
UNEXEC_OBJ=unexaix.o
;;
cygwin)
UNEXEC_OBJ=unexcw.o
;;
darwin)
UNEXEC_OBJ=unexmacosx.o
;;
hpux10-20 | hpux11)
UNEXEC_OBJ=unexhp9k800.o
;;
mingw32)
UNEXEC_OBJ=unexw32.o
;;
solaris)
# Use the Solaris dldump() function, called from unexsol.c, to dump
# emacs, instead of the generic ELF dump code found in unexelf.c.
# The resulting binary has a complete symbol table, and is better
# for debugging and other observability tools (debuggers, pstack, etc).
UNEXEC_OBJ=unexsol.o
;;
*)
UNEXEC_OBJ=unexelf.o
;;
esac
AC_SUBST(UNEXEC_OBJ)
LD_SWITCH_SYSTEM=
test "$with_unexec" = no || case "$opsys" in
freebsd|dragonfly)
## Let 'ld' find image libs and similar things in /usr/local/lib.
## The system compiler, GCC, has apparently been modified to not
## look there, contrary to what a stock GCC would do.
### It's not our place to do this. See bug#10313#17.
### LD_SWITCH_SYSTEM=-L/usr/local/lib
:
;;
gnu-linux)
## cpp test was "ifdef __mips__", but presumably this is equivalent...
case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
;;
netbsd)
### It's not our place to do this. See bug#10313#17.
### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
:
;;
openbsd)
## Han Boetes <han@boetes.org> says this is necessary,
## otherwise Emacs dumps core on elf systems.
LD_SWITCH_SYSTEM="-Z"
;;
esac
AC_SUBST(LD_SWITCH_SYSTEM)
ac_link="$ac_link $LD_SWITCH_SYSTEM"
## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
## which has not been defined yet. When this was handled with cpp,
## it was expanded to null when configure sourced the s/*.h file.
## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
## (or somesuch), but because it is supposed to go at the _front_
## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
## Compare with the gnu-linux case below, which added to the end
## of LD_SWITCH_SYSTEM, and so can instead go at the front of
## LD_SWITCH_SYSTEM_TEMACS.
case "$opsys" in
netbsd|openbsd)
LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
esac
C_SWITCH_MACHINE=
test $with_unexec = yes &&
case $canonical in
alpha*)
## With ELF, make sure that all common symbols get allocated to in the
## data section. Otherwise, the dump of temacs may miss variables in
## the shared library that have been initialized. For example, with
## GNU libc, __malloc_initialized would normally be resolved to the
## shared library's .bss section, which is fatal.
if test "x$GCC" = "xyes"; then
C_SWITCH_MACHINE="-fno-common"
else
AC_MSG_ERROR([Non-GCC compilers are not supported.])
fi
;;
esac
AC_SUBST(C_SWITCH_MACHINE)
C_SWITCH_SYSTEM=
## Some programs in src produce warnings saying certain subprograms
## are too complex and need a MAXMEM value greater than 2000 for
## additional optimization. --nils@exp-math.uni-essen.de
test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
if test "$opsys" = "mingw32"; then
case "$canonical" in
x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
*) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
esac
fi
## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
## It is redundant in glibc2, since we define _GNU_SOURCE.
AC_SUBST(C_SWITCH_SYSTEM)
LIBS_SYSTEM=
case "$opsys" in
## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
qnxnto) LIBS_SYSTEM="-lsocket" ;;
solaris) LIBS_SYSTEM="-lsocket -lnsl" ;;
## Motif needs -lgen.
unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
esac
AC_SUBST(LIBS_SYSTEM)
### Make sure subsequent tests use flags consistent with the build flags.
if test x"${OVERRIDE_CPPFLAGS}" != x; then
CPPFLAGS="${OVERRIDE_CPPFLAGS}"
else
CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
fi
# Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
AC_DEFUN([AC_TYPE_SIZE_T])
# Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
AC_DEFUN([AC_TYPE_UID_T])
# sqrt and other floating-point functions such as fmod and frexp
# are found in -lm on many systems.
OLD_LIBS=$LIBS
AC_SEARCH_LIBS([sqrt], [m])
if test "X$LIBS" = "X$OLD_LIBS"; then
LIB_MATH=
else
LIB_MATH=$ac_cv_search_sqrt
fi
LIBS=$OLD_LIBS
dnl Current possibilities handled by sed (aix4-2 -> aix,
dnl gnu-linux -> gnu/linux, etc.):
dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
case $opsys in
cygwin )
LIB_MATH=
;;
darwin )
## Adding -lm confuses the dynamic linker, so omit it.
LIB_MATH=
;;
freebsd | dragonfly )
SYSTEM_TYPE=berkeley-unix
;;
gnu-linux | gnu-kfreebsd )
;;
hpux10-20 | hpux11 )
;;
mingw32 )
LIB_MATH=
SYSTEM_TYPE=windows-nt
;;
netbsd | openbsd )
SYSTEM_TYPE=berkeley-unix
;;
solaris | unixware )
SYSTEM_TYPE=usg-unix-v
;;
esac
AC_SUBST(LIB_MATH)
AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
[The type of system you are compiling for; sets 'system-type'.])
AC_SUBST([SYSTEM_TYPE])
pre_PKG_CONFIG_CFLAGS=$CFLAGS
pre_PKG_CONFIG_LIBS=$LIBS
PKG_PROG_PKG_CONFIG(0.9.0)
dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
dnl actions.
AC_DEFUN([EMACS_CHECK_MODULES],
[PKG_CHECK_MODULES([$1], [$2],
[$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
m4_default([$3], [HAVE_$1=yes])],
[m4_default([$4], [HAVE_$1=no])])])
HAVE_SOUND=no
if test "${with_sound}" != "no"; then
# Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
have_sound_header=yes, [], [
#ifdef __MINGW32__
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
])
test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
AC_MSG_ERROR([OSS sound support requested but not found.])
if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
# Emulation library used on NetBSD.
AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
dnl Traditionally, we go on to check for alsa too. Does that make sense?
fi
AC_SUBST(LIBSOUND)
if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
ALSA_REQUIRED=1.0.0
ALSA_MODULES="alsa >= $ALSA_REQUIRED"
EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
if test $HAVE_ALSA = yes; then
LIBSOUND="$LIBSOUND $ALSA_LIBS"
CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
elif test "${with_sound}" = "alsa"; then
AC_MSG_ERROR([ALSA sound support requested but not found.])
fi
fi dnl with_sound = alsa|yes
dnl Define HAVE_SOUND if we have sound support. We know it works and
dnl compiles only on the specified platforms. For others, it
dnl probably doesn't make sense to try.
dnl FIXME So surely we should bypass this whole section if not using
dnl one of these platforms?
if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
case "$opsys" in
dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
dnl Adjust the --with-sound help text if you change this.
gnu-linux|freebsd|netbsd|mingw32|cygwin)
AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
HAVE_SOUND=yes
;;
esac
fi
AC_SUBST(CFLAGS_SOUND)
fi
dnl checks for header files
AC_CHECK_HEADERS_ONCE(
linux/fs.h
malloc.h
sys/systeminfo.h
sys/sysinfo.h
coff.h pty.h
sys/resource.h
sys/utsname.h pwd.h utmp.h util.h
sanitizer/lsan_interface.h)
AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
[emacs_cv_personality_addr_no_randomize],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/personality.h>]],
[[personality (personality (0xffffffff)
| ADDR_NO_RANDOMIZE)]])],
[emacs_cv_personality_addr_no_randomize=yes],
[emacs_cv_personality_addr_no_randomize=no])])
if test $emacs_cv_personality_addr_no_randomize = yes; then
AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
[Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
fi
# Note that Solaris has sys/sysinfo.h which defines struct
# sysinfo as well. To make sure that we're using GNU/Linux
# sysinfo, we explicitly set one of its fields.
if test "$ac_cv_header_sys_sysinfo_h" = yes; then
AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
[[struct sysinfo si;
si.totalram = 0;
sysinfo (&si)]])],
emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
if test $emacs_cv_linux_sysinfo = yes; then
AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
[[struct sysinfo si; return si.mem_unit]])],
AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
[Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
fi
fi
dnl On Solaris 8 there's a compilation warning for term.h because
dnl it doesn't define 'bool'.
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <term.h>]],[[]])],
AC_DEFINE(HAVE_TERM_H, 1, [Define to 1 if you have the <term.h> header file.]))
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS_ONCE(sys/socket.h)
AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif])
dnl checks for structure members
AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
struct ifreq.ifr_addr,
struct ifreq.ifr_addr.sa_len], , ,
[AC_INCLUDES_DEFAULT
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NET_IF_H
#include <net/if.h>
#endif])
dnl Check for endianness.
dnl AC_C_BIGENDIAN is done by gnulib.
dnl check for Make feature
AUTO_DEPEND=no
AUTODEPEND_PARENTS='lib src'
dnl check if we have GCC and autodepend is on.
if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
[SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
CFLAGS="$SAVE_CFLAGS"
test -f deps.d || emacs_cv_autodepend=no
rm -rf deps.d])
if test $emacs_cv_autodepend = yes; then
AUTO_DEPEND=yes
fi
fi
AC_SUBST(AUTO_DEPEND)
#### Choose a window system.
## We leave window_system equal to none if
## we end up building without one. Any new window system should
## set window_system to an appropriate value and add objects to
## window-system-specific substs.
window_system=none
AC_PATH_X
if test "$no_x" != yes; then
window_system=x11
fi
LD_SWITCH_X_SITE_RPATH=
if test "${x_libraries}" != NONE; then
if test -n "${x_libraries}"; then
LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
`
fi
x_default_search_path=""
x_search_path=${x_libraries}
if test -z "${x_search_path}"; then
x_search_path=/usr/lib
fi
for x_library in `AS_ECHO(["$x_search_path:"]) | \
sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
x_search_path="\
${x_library}/X11/%L/%T/%N%C%S:\
${x_library}/X11/%l/%T/%N%C%S:\
${x_library}/X11/%T/%N%C%S:\
${x_library}/X11/%L/%T/%N%S:\
${x_library}/X11/%l/%T/%N%S:\
${x_library}/X11/%T/%N%S"
if test x"${x_default_search_path}" = x; then
x_default_search_path=${x_search_path}
else
x_default_search_path="${x_search_path}:${x_default_search_path}"
fi
done
fi
AC_SUBST(LD_SWITCH_X_SITE_RPATH)
if test "${x_includes}" != NONE && test -n "${x_includes}"; then
C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
fi
if test x"${x_includes}" = x; then
bitmapdir=/usr/include/X11/bitmaps
else
# accumulate include directories that have X11 bitmap subdirectories
bmd_acc=
for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
if test -d "${bmd}/X11/bitmaps"; then
bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
fi
if test -d "${bmd}/bitmaps"; then
bmd_acc="${bmd_acc}:${bmd}/bitmaps"
fi
done
bitmapdir=${bmd_acc#:}
fi
NATIVE_IMAGE_API=no
test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
HAVE_NS=no
NS_GNUSTEP_CONFIG=no
NS_IMPL_COCOA=no
NS_IMPL_GNUSTEP=no
tmp_CPPFLAGS="$CPPFLAGS"
tmp_CFLAGS="$CFLAGS"
CPPFLAGS="$CPPFLAGS -x objective-c"
CFLAGS="$CFLAGS -x objective-c"
GNU_OBJC_CFLAGS=""
LIBS_GNUSTEP=
if test "${with_ns}" != no; then
# macfont.o requires macuvs.h which is absent after 'make extraclean',
# so avoid NS_IMPL_COCOA if macuvs.h is absent.
# Even a headless Emacs can build macuvs.h, so this should let you bootstrap.
if test "${opsys}" = darwin && test -f "$srcdir/src/macuvs.h"; then
NS_IMPL_COCOA=yes
ns_appdir=`pwd`/nextstep/Emacs.app
ns_appbindir=${ns_appdir}/Contents/MacOS
ns_applibexecdir=${ns_appdir}/Contents/MacOS/libexec
ns_applibdir=${ns_appdir}/Contents/Frameworks
ns_appresdir=${ns_appdir}/Contents/Resources
ns_appsrc=Cocoa/Emacs.base
ns_fontfile=macfont.o
elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
NS_IMPL_GNUSTEP=yes
NS_GNUSTEP_CONFIG=yes
GNU_OBJC_CFLAGS="$flags"
LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
elif test -f $GNUSTEP_CONFIG_FILE; then
NS_IMPL_GNUSTEP=yes
dnl FIXME sourcing this several times in subshells seems inefficient.
GNUSTEP_SYSTEM_HEADERS=$(
. $GNUSTEP_CONFIG_FILE
AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
)
GNUSTEP_SYSTEM_LIBRARIES=$(
. $GNUSTEP_CONFIG_FILE
AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
)
dnl I seemed to need these as well with GNUstep-startup 0.25.
GNUSTEP_LOCAL_HEADERS=$(
. $GNUSTEP_CONFIG_FILE
AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
)
GNUSTEP_LOCAL_LIBRARIES=$(
. $GNUSTEP_CONFIG_FILE
AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
)
test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
dnl If they had chosen to either define it or not, we could have
dnl just used AC_CHECK_DECL here.
AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
emacs_cv_objc_exceptions,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
[[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1;
#else
fail;
#endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
if test $emacs_cv_objc_exceptions = yes; then
dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
[Define if GNUstep uses ObjC exceptions.])
GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fobjc-exceptions"
fi
fi
if test $NS_IMPL_GNUSTEP = yes; then
ns_appdir=`pwd`/nextstep/Emacs.app
ns_appbindir=${ns_appdir}
ns_applibexecdir=${ns_appdir}/libexec
ns_applibdir=${ns_appdir}/Frameworks
ns_appresdir=${ns_appdir}/Resources
ns_appsrc=GNUstep/Emacs.base
ns_fontfile=nsfont.o
fi
dnl This is only used while we test the NS headers, it gets reset below.
CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
[AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
are required for a Nextstep build are missing or cannot be compiled.
Either fix this, or re-configure with the option '--without-ns'.])])
macfont_file=""
if test "${NS_IMPL_COCOA}" = "yes"; then
AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
[
#ifdef MAC_OS_X_VERSION_MAX_ALLOWED
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
; /* OK */
#else
error "Mac OS X 10.6 or newer required";
#endif
#endif
])],
ns_osx_have_106=yes,
ns_osx_have_106=no)
AC_MSG_RESULT([$ns_osx_have_106])
if test $ns_osx_have_106 = no; then
AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
fi
fi
if test "${with_native_image_api}" = yes; then
AC_DEFINE(HAVE_NATIVE_IMAGE_API, 1, [Define to use native OS APIs for images.])
NATIVE_IMAGE_API="yes (ns)"
fi
fi
AC_SUBST(LIBS_GNUSTEP)
INSTALL_ARCH_INDEP_EXTRA=install-etc
ns_self_contained=no
NS_OBJ=
NS_OBJC_OBJ=
if test "${HAVE_NS}" = yes; then
if test "$with_toolkit_scroll_bars" = "no"; then
AC_MSG_WARN([Non-toolkit scroll bars are not implemented for Nextstep.])
fi
window_system=nextstep
# set up packaging dirs
if test "${EN_NS_SELF_CONTAINED}" = yes; then
AC_DEFINE(NS_SELF_CONTAINED, 1, [Build an NS bundled app])
ns_self_contained=yes
prefix=${ns_appresdir}
exec_prefix=${ns_appbindir}
dnl This one isn't really used, only archlibdir is.
libexecdir="\${ns_applibexecdir}"
archlibdir="\${ns_applibexecdir}"
etcdocdir="\${ns_appresdir}/etc"
etcdir="\${ns_appresdir}/etc"
dnl FIXME maybe set datarootdir instead.
dnl That would also get applications, icons, man.
infodir="\${ns_appresdir}/info"
mandir="\${ns_appresdir}/man"
lispdir="\${ns_appresdir}/lisp"
lispdirrel="\${ns_appresdir}/lisp"
test "$locallisppathset" = no && locallisppath="\${ns_appresdir}/site-lisp"
INSTALL_ARCH_INDEP_EXTRA=
fi
NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
fi
CFLAGS="$tmp_CFLAGS"
CPPFLAGS="$tmp_CPPFLAGS"
AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
AC_SUBST(ns_self_contained)
AC_SUBST(NS_OBJ)
AC_SUBST(NS_OBJC_OBJ)
if test "${HAVE_NS}" = yes; then
AC_CACHE_CHECK(
[if the Objective C compiler supports instancetype],
[emacs_cv_objc_instancetype],
[AC_LANG_PUSH([Objective C])
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([[@interface Test
+ (instancetype)test;
@end]])],
emacs_cv_objc_instancetype=yes,
emacs_cv_objc_instancetype=no)
AC_LANG_POP([Objective C])])
if test x$emacs_cv_objc_instancetype = xyes ; then
AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
[Define if ObjC compiler supports instancetype natively.])
fi
AC_CACHE_CHECK(
[if the Objective C compiler defaults to C99],
[emacs_cv_objc_c99],
[AC_LANG_PUSH([Objective C])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[for (int i = 0;;);]])],
emacs_cv_objc_c99=yes,
emacs_cv_objc_c99=no)
AC_LANG_POP([Objective C])])
if test x$emacs_cv_objc_c99 = xno ; then
GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -std=c99"
fi
fi
HAVE_W32=no
W32_OBJ=
W32_LIBS=
EMACSRES=
CLIENTRES=
CLIENTW=
W32_RES_LINK=
EMACS_MANIFEST=
if test "${with_w32}" != no; then
case "${opsys}" in
cygwin)
AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
[AC_MSG_ERROR(['--with-w32' was specified, but windows.h
cannot be found.])])
;;
mingw32)
## Using --with-w32 with MinGW is a no-op, but we allow it.
;;
*)
AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
;;
esac
fi
if test "${opsys}" = "mingw32"; then
AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <windows.h>
#include <usp10.h>]],
[[PIMAGE_NT_HEADERS pHeader;
PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
[emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
if test "${emacs_cv_w32api}" = "no"; then
AC_MSG_ERROR([the Windows API headers are too old to support this build.])
fi
HAVE_W32=${emacs_cv_w32api}
fi
FIRSTFILE_OBJ=
NTDIR=
LIBS_ECLIENT=
LIB_WSOCK32=
NTLIB=
CM_OBJ="cm.o"
XARGS_LIMIT=
if test "${HAVE_W32}" = "yes"; then
AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
if test "$with_toolkit_scroll_bars" = "no"; then
AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
fi
AC_CHECK_TOOL(WINDRES, [windres],
[AC_MSG_ERROR([No resource compiler found.])])
W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
EMACSRES="emacs.res"
case "$canonical" in
x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
*) EMACS_MANIFEST="emacs-x86.manifest" ;;
esac
dnl Construct something of the form "24,4,0,0" with 4 components.
comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
AC_SUBST(comma_version)
AC_SUBST(comma_space_version)
AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
if test "${opsys}" = "cygwin"; then
W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
# Tell the linker that emacs.res is an object (which we compile from
# the rc file), not a linker script.
W32_RES_LINK="-Wl,emacs.res"
else
W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
dnl FIXME: This should probably be supported for Cygwin/w32 as
dnl well, but the Cygwin build needs to link against -lgdiplus
if test "${with_native_image_api}" = yes; then
AC_DEFINE(HAVE_NATIVE_IMAGE_API, 1, [Define to use native OS APIs for images.])
NATIVE_IMAGE_API="yes (w32)"
W32_OBJ="$W32_OBJ w32image.o"
fi
W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
W32_RES_LINK="\$(EMACSRES)"
CLIENTRES="emacsclient.res"
CLIENTW="emacsclientw\$(EXEEXT)"
FIRSTFILE_OBJ=firstfile.o
NTDIR=nt
CM_OBJ=
LIBS_ECLIENT="-lcomctl32"
LIB_WSOCK32="-lwsock32"
NTLIB="ntlib.$ac_objext"
XARGS_LIMIT="-s 10000"
fi
fi
if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
W32_LIBS="-lkernel32"
W32_OBJ="w32cygwinx.o"
fi
AC_SUBST(W32_OBJ)
AC_SUBST(W32_LIBS)
AC_SUBST(EMACSRES)
AC_SUBST(EMACS_MANIFEST)
AC_SUBST(CLIENTRES)
AC_SUBST(CLIENTW)
AC_SUBST(W32_RES_LINK)
AC_SUBST(FIRSTFILE_OBJ)
AC_SUBST(NTDIR)
AC_SUBST(CM_OBJ)
AC_SUBST(LIBS_ECLIENT)
AC_SUBST(LIB_WSOCK32)
AC_SUBST(NTLIB)
AC_SUBST(XARGS_LIMIT)
if test "${HAVE_W32}" = "yes"; then
window_system=w32
with_xft=no
fi
## $window_system is now set to the window system we will
## ultimately use.
term_header=
HAVE_X_WINDOWS=no
HAVE_X11=no
USE_X_TOOLKIT=none
case "${window_system}" in
x11 )
HAVE_X_WINDOWS=yes
HAVE_X11=yes
term_header=xterm.h
case "${with_x_toolkit}" in
athena | lucid ) USE_X_TOOLKIT=LUCID ;;
motif ) USE_X_TOOLKIT=MOTIF ;;
gtk ) with_gtk=yes
term_header=gtkutil.h
dnl Don't set this for GTK. A lot of tests below assumes Xt when
dnl USE_X_TOOLKIT is set.
USE_X_TOOLKIT=none ;;
gtk2 ) with_gtk2=yes
term_header=gtkutil.h
USE_X_TOOLKIT=none ;;
gtk3 ) with_gtk3=yes
term_header=gtkutil.h
USE_X_TOOLKIT=none ;;
no ) USE_X_TOOLKIT=none ;;
dnl If user did not say whether to use a toolkit, make this decision later:
dnl use the toolkit if we have gtk, or X11R5 or newer.
* ) USE_X_TOOLKIT=maybe ;;
esac
;;
nextstep )
term_header=nsterm.h
;;
w32 )
term_header=w32term.h
;;
esac
if test "$window_system" = none && test "X$with_x" != "Xno"; then
AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
if test "$HAVE_XSERVER" = true ||
test -n "$DISPLAY" ||
{
for emacs_libX11 in /usr/lib/libX11.*; do break; done
test "$emacs_libX11" != '/usr/lib/libX11.*'
}
then
AC_MSG_ERROR([You seem to be running X, but no X development libraries
were found. You should install the relevant development files for X
and for the toolkit you want, such as Gtk+. Also make
sure you have development files for image handling, i.e.
tiff, gif, jpeg, png and xpm.
If you are sure you want Emacs compiled without X window support, pass
--without-x
to configure.])
fi
fi
# Does the opsystem file prohibit the use of the GNU malloc?
# Assume not, until told otherwise.
GNU_MALLOC=yes
AC_CACHE_CHECK(
[whether malloc is Doug Lea style],
[emacs_cv_var_doug_lea_malloc],
[emacs_cv_var_doug_lea_malloc=no
dnl Hooks do not work with address sanitization.
if test "$emacs_cv_sanitize_address" != yes; then
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <malloc.h>
static void hook (void) {}]],
[[malloc_set_state (malloc_get_state ());
__after_morecore_hook = hook;
__malloc_initialize_hook = hook;]])],
[emacs_cv_var_doug_lea_malloc=yes])
fi])
doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
hybrid_malloc=
system_malloc=yes
dnl This must be before the test of $ac_cv_func_sbrk below.
AC_CHECK_FUNCS_ONCE([sbrk])
test $with_unexec = yes &&
case "$opsys" in
## darwin ld insists on the use of malloc routines in the System framework.
darwin | mingw32 | nacl | solaris) ;;
cygwin | qnxnto | freebsd)
hybrid_malloc=yes
system_malloc= ;;
*) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
esac
if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
&& test "${UNEXEC_OBJ}" = unexelf.o; then
hybrid_malloc=yes
fi
GMALLOC_OBJ=
HYBRID_MALLOC=
if test "${system_malloc}" = "yes"; then
AC_DEFINE([SYSTEM_MALLOC], 1,
[Define to 1 to use the system memory allocator, even if it is not
Doug Lea style.])
GNU_MALLOC=no
GNU_MALLOC_reason="
(The GNU allocators don't work with this system configuration.)"
VMLIMIT_OBJ=
elif test "$hybrid_malloc" = yes; then
AC_DEFINE(HYBRID_MALLOC, 1,
[Define to use gmalloc before dumping and the system malloc after.])
HYBRID_MALLOC=1
GNU_MALLOC=no
GNU_MALLOC_reason=" (only before dumping)"
GMALLOC_OBJ=gmalloc.o
VMLIMIT_OBJ=
else
test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
VMLIMIT_OBJ=vm-limit.o
AC_CHECK_HEADERS([sys/vlimit.h])
AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[extern char data_start[]; char ch;]],
[[return data_start < &ch;]])],
[emacs_cv_data_start=yes],
[emacs_cv_data_start=no])])
if test $emacs_cv_data_start = yes; then
AC_DEFINE([HAVE_DATA_START], 1,
[Define to 1 if data_start is the address of the start
of the main data segment.])
fi
fi
AC_SUBST([HYBRID_MALLOC])
AC_SUBST(GMALLOC_OBJ)
AC_SUBST(VMLIMIT_OBJ)
if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
if test "$GNU_MALLOC" = yes ; then
GNU_MALLOC_reason="
(Using Doug Lea's new malloc from the GNU C Library.)"
fi
AC_DEFINE(DOUG_LEA_MALLOC, 1,
[Define to 1 if the system memory allocator is Doug Lea style,
with malloc hooks and malloc_set_state.])
## Use mmap directly for allocating larger buffers.
## FIXME this comes from src/s/{gnu,gnu-linux}.h:
## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
## Does the AC_FUNC_MMAP test below make this check unnecessary?
case "$opsys" in
mingw32|gnu*) REL_ALLOC=no ;;
esac
fi
if test x"${REL_ALLOC}" = x; then
REL_ALLOC=${GNU_MALLOC}
fi
use_mmap_for_buffers=no
case "$opsys" in
mingw32) use_mmap_for_buffers=yes ;;
esac
AC_FUNC_MMAP
if test $use_mmap_for_buffers = yes; then
AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
REL_ALLOC=no
fi
LIBS="$LIBS_SYSTEM $LIBS"
dnl FIXME replace main with a function we actually want from this library.
AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
dnl Check for the POSIX thread library.
LIB_PTHREAD=
AC_CHECK_HEADERS_ONCE(pthread.h)
if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
AC_CACHE_CHECK([for pthread library],
[emacs_cv_pthread_lib],
[emacs_cv_pthread_lib=no
OLD_LIBS=$LIBS
for emacs_pthread_lib in 'none needed' -lpthread; do
case $emacs_pthread_lib in
-*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
esac
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>
#include <signal.h>
sigset_t old_mask, new_mask;
void noop (void) {}]],
[[pthread_t th = pthread_self ();
int status = 0;
status += pthread_create (&th, 0, 0, 0);
status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
status += pthread_kill (th, 0);
#if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
|| defined DOUG_LEA_MALLOC)
/* Test for pthread_atfork only if gmalloc uses it,
as older-style hosts like MirBSD 10 lack it. */
status += pthread_atfork (noop, noop, noop);
#endif
return status;]])],
[emacs_cv_pthread_lib=$emacs_pthread_lib])
LIBS=$OLD_LIBS
if test "$emacs_cv_pthread_lib" != no; then
break
fi
done])
if test "$emacs_cv_pthread_lib" != no; then
AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
case $emacs_cv_pthread_lib in
-*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
esac
ac_cv_func_pthread_sigmask=yes
# Some systems optimize for single-threaded programs by default, and
# need special flags to disable these optimizations. For example, the
# definition of 'errno' in <errno.h>.
case $opsys in
hpux* | solaris)
AC_DEFINE([_REENTRANT], 1,
[Define to 1 if your system requires this in multithreaded code.]);;
aix4-2)
AC_DEFINE([_THREAD_SAFE], 1,
[Define to 1 if your system requires this in multithreaded code.]);;
esac
fi
fi
AC_SUBST([LIB_PTHREAD])
AC_MSG_CHECKING([for thread support])
threads_enabled=no
if test "$with_threads" = yes; then
if test "$emacs_cv_pthread_lib" != no; then
AC_DEFINE(THREADS_ENABLED, 1,
[Define to 1 if you want elisp thread support.])
threads_enabled=yes
elif test "${opsys}" = "mingw32"; then
dnl MinGW can do native Windows threads even without pthreads
AC_DEFINE(THREADS_ENABLED, 1,
[Define to 1 if you want elisp thread support.])
threads_enabled=yes
fi
fi
AC_MSG_RESULT([$threads_enabled])
dnl Check for need for bigtoc support on IBM AIX
case ${host_os} in
aix*)
AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
case $GCC in
yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
*) gdb_cv_bigtoc=-bbigtoc ;;
esac
LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
])
;;
esac
# Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
# is for the tests that follow. We set them back later on.
REAL_CFLAGS="$CFLAGS"
REAL_CPPFLAGS="$CPPFLAGS"
REAL_LIBS="$LIBS"
if test "${HAVE_X11}" = "yes"; then
DEFS="$C_SWITCH_X_SITE $DEFS"
LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
LIBS="-lX11 $LIBS"
CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
# On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
# This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
# but it's more convenient here to set LD_RUN_PATH since this
# also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
export LD_RUN_PATH
fi
if test "${opsys}" = "gnu-linux"; then
AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[XOpenDisplay ("foo");]])],
[xgnu_linux_first_failure=no],
[xgnu_linux_first_failure=yes])
if test "${xgnu_linux_first_failure}" = "yes"; then
OLD_CPPFLAGS="$CPPFLAGS"
OLD_LIBS="$LIBS"
CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
LIBS="$LIBS -b i486-linuxaout"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
[[XOpenDisplay ("foo");]])],
[xgnu_linux_second_failure=no],
[xgnu_linux_second_failure=yes])
if test "${xgnu_linux_second_failure}" = "yes"; then
# If we get the same failure with -b, there is no use adding -b.
# So leave it out. This plays safe.
emacs_cv_b_link=no
else
emacs_cv_b_link=yes
fi
CPPFLAGS=$OLD_CPPFLAGS
LIBS=$OLD_LIBS
else
emacs_cv_b_link=no
fi])
if test "x$emacs_cv_b_link" = xyes ; then
LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
fi
fi
# Reportedly, some broken Solaris systems have XKBlib.h but are missing
# header files included from there.
AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
#include <X11/XKBlib.h>]],
[[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
emacs_cv_xkb=yes, emacs_cv_xkb=no)])
if test $emacs_cv_xkb = yes; then
AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
fi
AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
XScreenNumberOfScreen)
fi
if test "${window_system}" = "x11"; then
AC_MSG_CHECKING(X11 version 6)
AC_CACHE_VAL(emacs_cv_x11_version_6,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
[[#if XlibSpecificationRelease < 6
fail;
#endif
]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
if test $emacs_cv_x11_version_6 = yes; then
AC_MSG_RESULT(6 or newer)
AC_DEFINE(HAVE_X11R6, 1,
[Define to 1 if you have the X11R6 or newer version of Xlib.])
AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
## XIM support.
case "$opsys" in
solaris) : ;;
*) AC_DEFINE(HAVE_X11R6_XIM, 1,
[Define if you have usable X11R6-style XIM support.])
;;
esac
else
AC_MSG_RESULT(before 6)
fi
fi
### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
HAVE_RSVG=no
if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
if test "${with_rsvg}" != "no"; then
RSVG_REQUIRED=2.14.0
RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
AC_SUBST(RSVG_CFLAGS)
AC_SUBST(RSVG_LIBS)
if test $HAVE_RSVG = yes; then
AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
CFLAGS="$CFLAGS $RSVG_CFLAGS"
# Windows loads librsvg dynamically
if test "${opsys}" = "mingw32"; then
RSVG_LIBS=
fi
fi
fi
fi
### Use -lwebp if available, unless '--with-webp=no'
HAVE_WEBP=no
if test "${with_webp}" != "no"; then
if test "${HAVE_X11}" = "yes" || test "${opsys}" = "mingw32" \
|| test "${HAVE_W32}" = "yes" || test "${HAVE_NS}" = "yes"; then
WEBP_REQUIRED=0.6.0
WEBP_MODULE="libwebp >= $WEBP_REQUIRED"
EMACS_CHECK_MODULES([WEBP], [$WEBP_MODULE])
AC_SUBST(WEBP_CFLAGS)
AC_SUBST(WEBP_LIBS)
fi
if test $HAVE_WEBP = yes; then
AC_DEFINE(HAVE_WEBP, 1, [Define to 1 if using libwebp.])
CFLAGS="$CFLAGS $WEBP_CFLAGS"
# Windows loads libwebp dynamically
if test "${opsys}" = "mingw32"; then
WEBP_LIBS=
fi
fi
fi
HAVE_IMAGEMAGICK=no
if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
if test "${with_imagemagick}" != "no"; then
if test -n "$BREW"; then
# Homebrew doesn't link ImageMagick 6 by default, so make sure
# pkgconfig can find it.
export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
fi
EMACS_CHECK_MODULES([IMAGEMAGICK], [MagickWand >= 7])
if test $HAVE_IMAGEMAGICK = yes; then
AC_DEFINE([HAVE_IMAGEMAGICK7], 1, [Define to 1 if using ImageMagick7.])
else
## 6.3.5 is the earliest version known to work; see Bug#17339.
## 6.8.2 makes Emacs crash; see Bug#13867.
EMACS_CHECK_MODULES([IMAGEMAGICK], [Wand >= 6.3.5 Wand != 6.8.2])
fi
if test $HAVE_IMAGEMAGICK = yes; then
OLD_CFLAGS=$CFLAGS
OLD_LIBS=$LIBS
CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
LIBS="$IMAGEMAGICK_LIBS $LIBS"
AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
MagickMergeImageLayers MagickAutoOrientImage])
CFLAGS=$OLD_CFLAGS
LIBS=$OLD_LIBS
# Check that ImageMagick links. It does not link on Fedora 25
# with './configure CC=clang', as pkg-config outputs flags like
# -lomp that work for GCC but not Clang.
if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
HAVE_IMAGEMAGICK=no
fi
fi
if test $HAVE_IMAGEMAGICK = yes; then
AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
else
if test "${with_imagemagick}" != "no"; then
AC_MSG_ERROR([ImageMagick wanted, but it does not compile. Maybe some library files are missing?]);
fi
IMAGEMAGICK_CFLAGS=
IMAGEMAGICK_LIBS=
fi
AC_SUBST([IMAGEMAGICK_CFLAGS])
AC_SUBST([IMAGEMAGICK_LIBS])
fi
fi
AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
if test "${HAVE_GETADDRINFO_A}" = "yes"; then
AC_DEFINE(HAVE_GETADDRINFO_A, 1,
[Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
GETADDRINFO_A_LIBS="-lanl"
AC_SUBST(GETADDRINFO_A_LIBS)
fi
HAVE_GTK=no
GTK_OBJ=
gtk_term_header=$term_header
check_gtk2=no
gtk3_pkg_errors=
if test "${opsys}" != "mingw32"; then
if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
GLIB_REQUIRED=2.37.5
GTK_REQUIRED=3.10
GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
dnl Checks for libraries.
EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
[pkg_check_gtk=yes], [pkg_check_gtk=no])
if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
AC_MSG_ERROR($GTK_PKG_ERRORS)
fi
if test "$pkg_check_gtk" = "yes"; then
AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
GTK_OBJ=emacsgtkfixed.o
gtk_term_header=gtkutil.h
USE_GTK_TOOLKIT="GTK3"
if test "x$ac_enable_gtk_deprecation_warnings" = x; then
AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
[Define to 1 to disable GTK+/GDK deprecation warnings.])
AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
[Define to 1 to disable Glib deprecation warnings.])
fi
else
check_gtk2=yes
gtk3_pkg_errors="$GTK_PKG_ERRORS "
fi
fi
if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
GLIB_REQUIRED=2.28
GTK_REQUIRED=2.24
GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
dnl Checks for libraries.
EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
[pkg_check_gtk=yes], [pkg_check_gtk=no])
if test "$pkg_check_gtk" = "no" &&
{ test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
then
AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
fi
test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
fi
fi
OLD_CFLAGS=$CFLAGS
OLD_LIBS=$LIBS
if test x"$pkg_check_gtk" = xyes; then
AC_SUBST(GTK_LIBS)
CFLAGS="$CFLAGS $GTK_CFLAGS"
LIBS="$GTK_LIBS $LIBS"
dnl Try to compile a simple GTK program.
AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[/* Check the Gtk and Glib APIs. */
#include <gtk/gtk.h>
#include <glib-object.h>
static void
callback (GObject *go, GParamSpec *spec, gpointer user_data)
{}
]],
[[
GtkSettings *gs = 0;
/* Use G_CALLBACK to make sure function pointers can be cast to void *;
strict C prohibits this. Use gtk_main_iteration to test that the
libraries are there. */
if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
0, 0, 0, G_CALLBACK (callback), 0))
gtk_main_iteration ();
]])],
[emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
if test "${emacs_cv_gtk_compiles}" != "yes"; then
GTK_OBJ=
if test "$USE_X_TOOLKIT" != "maybe"; then
AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
fi
else
C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
HAVE_GTK=yes
AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
GTK_OBJ="gtkutil.o $GTK_OBJ"
term_header=$gtk_term_header
USE_X_TOOLKIT=none
AC_MSG_WARN([[Your version of Gtk+ will have problems with
closing open displays. This is no problem if you just use
one display, but if you use more than one and close one of them
Emacs may crash.
See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
fi
fi
AC_SUBST(GTK_OBJ)
if test "${HAVE_GTK}" = "yes"; then
dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
dnl a lot if #ifdef:s, say we have toolkit scrollbars.
if test "$with_toolkit_scroll_bars" != no; then
with_toolkit_scroll_bars=yes
fi
term_header=gtkutil.h
if test "${USE_GTK_TOOLKIT}" = GTK2; then
dnl Check if we have the old file selection dialog declared and
dnl in the link library. In 2.x it may be in the library,
dnl but not declared if deprecated featured has been selected out.
dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
HAVE_GTK_FILE_SELECTION=no
AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
#include <gtk/gtk.h>])
if test "$HAVE_GTK_FILE_SELECTION" = yes; then
AC_CHECK_FUNCS(gtk_file_selection_new)
fi
dnl This procedure causes a bug on certain Ubuntu GTK+2 builds
AC_CHECK_FUNCS(gtk_window_set_has_resize_grip)
fi
fi
dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
dnl Enable xwidgets if macOS Cocoa and WebKit framework are available.
HAVE_XWIDGETS=no
XWIDGETS_OBJ=
if test "$with_xwidgets" != "no"; then
if test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none"; then
WEBKIT_REQUIRED=2.12
WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
HAVE_XWIDGETS=$HAVE_WEBKIT
XWIDGETS_OBJ="xwidget.o"
elif test "${NS_IMPL_COCOA}" = "yes"; then
dnl FIXME: Check framework WebKit2
dnl WEBKIT_REQUIRED=M.m.p
WEBKIT_LIBS="-Wl,-framework -Wl,WebKit"
WEBKIT_CFLAGS="-I/System/Library/Frameworks/WebKit.framework/Headers"
HAVE_WEBKIT="yes"
HAVE_XWIDGETS=$HAVE_WEBKIT
XWIDGETS_OBJ="xwidget.o"
NS_OBJC_OBJ="$NS_OBJC_OBJ nsxwidget.o"
dnl Update NS_OBJC_OBJ with added nsxwidget.o
AC_SUBST(NS_OBJC_OBJ)
else
AC_MSG_ERROR([xwidgets requested, it requires GTK3 as X window toolkit or macOS Cocoa as window system.])
fi
test $HAVE_XWIDGETS = yes ||
AC_MSG_ERROR([xwidgets requested but WebKitGTK+ or WebKit framework not found.])
AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
fi
AC_SUBST(XWIDGETS_OBJ)
CFLAGS=$OLD_CFLAGS
LIBS=$OLD_LIBS
dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
dnl other platforms.
HAVE_DBUS=no
DBUS_OBJ=
if test "${with_dbus}" = "yes"; then
EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
if test "$HAVE_DBUS" = yes; then
AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
dnl dbus_type_is_valid and dbus_validate_* have been introduced in
dnl D-Bus 1.5.12.
OLD_LIBS=$LIBS
LIBS="$LIBS $DBUS_LIBS"
AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
dbus_type_is_valid \
dbus_validate_bus_name \
dbus_validate_path \
dbus_validate_interface \
dbus_validate_member)
LIBS=$OLD_LIBS
DBUS_OBJ=dbusbind.o
fi
fi
AC_SUBST(DBUS_CFLAGS)
AC_SUBST(DBUS_LIBS)
AC_SUBST(DBUS_OBJ)
dnl GSettings has been tested under GNU/Linux only.
HAVE_GSETTINGS=no
if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
if test "$HAVE_GSETTINGS" = "yes"; then
old_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
old_LIBS=$LIBS
LIBS="$LIBS $GSETTINGS_LIBS"
AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[/* Check that gsettings really is present. */
#include <glib-object.h>
#include <gio/gio.h>
]],
[[
GSettings *settings;
GVariant *val = g_settings_get_value (settings, "");
]])],
[emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
if test "$emacs_cv_gsettings_in_gio" = "yes"; then
AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
SETTINGS_LIBS="$GSETTINGS_LIBS"
test "$with_gconf" = "yes" || with_gconf=no
fi
CFLAGS=$old_CFLAGS
LIBS=$old_LIBS
fi
fi
dnl GConf has been tested under GNU/Linux only.
dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
HAVE_GCONF=no
if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
if test "$HAVE_GCONF" = yes; then
AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
dnl Newer GConf doesn't link with g_objects, so this is not defined.
SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
fi
fi
if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
if test "$HAVE_GOBJECT" = "yes"; then
SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
fi
SAVE_CFLAGS="$CFLAGS"
SAVE_LIBS="$LIBS"
CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
LIBS="$SETTINGS_LIBS $LIBS"
CFLAGS="$SAVE_CFLAGS"
LIBS="$SAVE_LIBS"
fi
AC_SUBST(SETTINGS_CFLAGS)
AC_SUBST(SETTINGS_LIBS)
USE_STARTUP_NOTIFICATION=no
if test "${HAVE_GTK}" = "yes"; then
USE_STARTUP_NOTIFICATION=yes
fi
AC_SUBST(USE_STARTUP_NOTIFICATION)
dnl SELinux is available for GNU/Linux only.
HAVE_LIBSELINUX=no
LIBSELINUX_LIBS=
if test "${with_selinux}" = "yes"; then
AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
if test "$HAVE_LIBSELINUX" = yes; then
AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
LIBSELINUX_LIBS=-lselinux
fi
fi
AC_SUBST(LIBSELINUX_LIBS)
HAVE_GNUTLS=no
if test "${with_gnutls}" != "no" ; then
EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
[HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
if test "${HAVE_GNUTLS}" = "yes"; then
AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
fi
# Windows loads GnuTLS dynamically
if test "${opsys}" = "mingw32"; then
LIBGNUTLS_LIBS=
fi
fi
AC_SUBST(LIBGNUTLS_LIBS)
AC_SUBST(LIBGNUTLS_CFLAGS)
HAVE_LIBSYSTEMD=no
if test "${with_libsystemd}" = "yes" ; then
dnl This code has been tested with libsystemd 222 and later.
dnl FIXME: Find the earliest version number for which Emacs should work,
dnl and change '222' to that number.
EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
[HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
if test "${HAVE_LIBSYSTEMD}" = "yes"; then
AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
fi
fi
AC_SUBST(LIBSYSTEMD_LIBS)
AC_SUBST(LIBSYSTEMD_CFLAGS)
HAVE_JSON=no
JSON_OBJ=
if test "${with_json}" != no; then
EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
[HAVE_JSON=yes], [HAVE_JSON=no])
if test "${HAVE_JSON}" = yes; then
AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
JSON_OBJ=json.o
fi
# Windows loads libjansson dynamically
if test "${opsys}" = "mingw32"; then
JSON_LIBS=
fi
fi
AC_SUBST(JSON_LIBS)
AC_SUBST(JSON_CFLAGS)
AC_SUBST(JSON_OBJ)
NOTIFY_OBJ=
NOTIFY_SUMMARY=no
dnl MS Windows native file monitor is available for mingw32 only.
case $with_file_notification,$opsys in
w32,cygwin)
AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
this is only supported on MS-Windows native and MinGW32 builds.
Consider using gfile instead.])
;;
w32,* | yes,mingw32)
AC_CHECK_HEADER(windows.h)
if test "$ac_cv_header_windows_h" = yes ; then
AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
NOTIFY_OBJ=w32notify.o
NOTIFY_SUMMARY="yes (w32)"
fi ;;
esac
dnl inotify is available only on GNU/Linux.
case $with_file_notification,$NOTIFY_OBJ in
inotify, | yes,)
AC_CHECK_HEADER(sys/inotify.h)
if test "$ac_cv_header_sys_inotify_h" = yes ; then
AC_CHECK_FUNC(inotify_init1)
if test "$ac_cv_func_inotify_init1" = yes; then
AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
NOTIFY_OBJ=inotify.o
NOTIFY_SUMMARY="yes -lglibc (inotify)"
fi
fi ;;
esac
dnl kqueue is available on BSD-like systems.
case $with_file_notification,$NOTIFY_OBJ in
kqueue,* | yes,)
EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
if test "$HAVE_KQUEUE" = "yes"; then
AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
NOTIFY_CFLAGS=$KQUEUE_CFLAGS
NOTIFY_LIBS=$KQUEUE_LIBS
NOTIFY_OBJ=kqueue.o
NOTIFY_SUMMARY="yes -lkqueue"
else
AC_SEARCH_LIBS(kqueue, [])
if test "$ac_cv_search_kqueue" != no; then
AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
NOTIFY_OBJ=kqueue.o
NOTIFY_SUMMARY="yes (kqueue)"
fi
fi ;;
esac
dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
dnl has been added in glib 2.24. It has been tested under
dnl GNU/Linux only.
case $with_file_notification,$NOTIFY_OBJ in
gfile,* | yes,)
if test "${HAVE_NS}" = yes; then
AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
Consider kqueue instead.])
else
EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
if test "$HAVE_GFILENOTIFY" = "yes"; then
AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
NOTIFY_LIBS=$GFILENOTIFY_LIBS
NOTIFY_OBJ=gfilenotify.o
NOTIFY_SUMMARY="yes -lgio (gfile)"
fi
fi ;;
esac
case $with_file_notification,$NOTIFY_OBJ in
yes,* | no,* | *,?*) ;;
*) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
esac
if test -n "$NOTIFY_OBJ"; then
AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
fi
AC_SUBST(NOTIFY_CFLAGS)
AC_SUBST(NOTIFY_LIBS)
AC_SUBST(NOTIFY_OBJ)
dnl Do not put whitespace before the #include statements below.
dnl Older compilers (eg sunos4 cc) choke on it.
HAVE_XAW3D=no
LUCID_LIBW=
if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
if test "$with_xaw3d" != no; then
AC_CACHE_VAL(emacs_cv_xaw3d,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Intrinsic.h>
#include <X11/Xaw3d/Simple.h>]],
[[]])],
[AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
emacs_cv_xaw3d=no)])
else
emacs_cv_xaw3d=no
fi
if test $emacs_cv_xaw3d = yes; then
AC_MSG_CHECKING(for xaw3d)
AC_MSG_RESULT([yes; using Lucid toolkit])
USE_X_TOOLKIT=LUCID
HAVE_XAW3D=yes
LUCID_LIBW=-lXaw3d
AC_DEFINE(HAVE_XAW3D, 1,
[Define to 1 if you have the Xaw3d library (-lXaw3d).])
else
AC_MSG_CHECKING(for xaw3d)
AC_MSG_RESULT(no)
AC_MSG_CHECKING(for libXaw)
AC_CACHE_VAL(emacs_cv_xaw,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Intrinsic.h>
#include <X11/Xaw/Simple.h>]],
[[]])],
emacs_cv_xaw=yes,
emacs_cv_xaw=no)])
if test $emacs_cv_xaw = yes; then
AC_MSG_RESULT([yes; using Lucid toolkit])
USE_X_TOOLKIT=LUCID
LUCID_LIBW=-lXaw
elif test x"${USE_X_TOOLKIT}" = xLUCID; then
AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
else
AC_MSG_ERROR([No X toolkit could be found.
If you are sure you want Emacs compiled without an X toolkit, pass
--with-x-toolkit=no
to configure. Otherwise, install the development libraries for the toolkit
that you want to use (e.g. Gtk+) and re-run configure.])
fi
fi
fi
X_TOOLKIT_TYPE=$USE_X_TOOLKIT
LIBXTR6=
LIBXMU=
if test "${USE_X_TOOLKIT}" != "none"; then
AC_MSG_CHECKING(X11 toolkit version)
AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
[[#if XtSpecificationRelease < 6
fail;
#endif
]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
if test $emacs_cv_x11_toolkit_version_6 = yes; then
AC_MSG_RESULT(6 or newer)
AC_DEFINE(HAVE_X11XTR6, 1,
[Define to 1 if you have the X11R6 or newer version of Xt.])
LIBXTR6="-lSM -lICE"
case "$opsys" in
## Use libw.a along with X11R6 Xt.
unixware) LIBXTR6="$LIBXTR6 -lw" ;;
esac
else
AC_MSG_RESULT(before 6)
fi
dnl If using toolkit, check whether libXmu.a exists.
dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
OLDLIBS="$LIBS"
if test x$HAVE_X11XTR6 = xyes; then
OTHERLIBS='-lXt -lSM -lICE'
else
OTHERLIBS='-lXt'
fi
AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
if test "X$LIBS" != "X$OLDLIBS"; then
LIBXMU=$ac_cv_search_XmuConvertStandardSelection
fi
LIBS=$OLDLIBS
dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
fi
AC_SUBST(LIBXTR6)
AC_SUBST(LIBXMU)
LIBXP=
if test "${USE_X_TOOLKIT}" = "MOTIF"; then
# OpenMotif may be installed in such a way on some GNU/Linux systems.
if test -d /usr/include/openmotif; then
CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
emacs_cv_openmotif=yes
case "$canonical" in
x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
;;
*)
test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
esac
else
emacs_cv_openmotif=no
fi
AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
[[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
int x = 5;
#else
Motif version prior to 2.1.
#endif]])],
emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
if test $emacs_cv_motif_version_2_1 = yes; then
AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
if test x$emacs_cv_openmotif = xyes; then
REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
fi
else
AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
# We put this in CFLAGS temporarily to precede other -I options
# that might be in CFLAGS temporarily.
# We put this in CPPFLAGS where it precedes the other -I options.
OLD_CPPFLAGS=$CPPFLAGS
OLD_CFLAGS=$CFLAGS
CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
[[int x = 5;]])],
emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
if test $emacs_cv_lesstif = yes; then
# Make sure this -I option remains in CPPFLAGS after it is set
# back to REAL_CPPFLAGS.
# There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
# have those other -I options anyway. Ultimately, having this
# directory ultimately in CPPFLAGS will be enough.
REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
else
CFLAGS=$OLD_CFLAGS
CPPFLAGS=$OLD_CPPFLAGS
fi
fi
AC_CHECK_HEADER([Xm/BulletinB.h], [],
[AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
fi
dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
dnl using Motif or Xaw3d is available, and unless
dnl --with-toolkit-scroll-bars=no was specified.
AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
[Define to 1 if we should use toolkit scroll bars.])dnl
USE_TOOLKIT_SCROLL_BARS=no
if test "${with_toolkit_scroll_bars}" != "no"; then
if test "${USE_X_TOOLKIT}" != "none"; then
if test "${USE_X_TOOLKIT}" = "MOTIF"; then
AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
HAVE_XAW3D=no
USE_TOOLKIT_SCROLL_BARS=yes
elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
USE_TOOLKIT_SCROLL_BARS=yes
fi
elif test "${HAVE_GTK}" = "yes"; then
AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
USE_TOOLKIT_SCROLL_BARS=yes
elif test "${HAVE_NS}" = "yes"; then
AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
USE_TOOLKIT_SCROLL_BARS=yes
elif test "${HAVE_W32}" = "yes"; then
AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
USE_TOOLKIT_SCROLL_BARS=yes
fi
fi
dnl See if XIM is available.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Xlib.h>
#include <X11/Xresource.h>]],
[[XIMProc callback;]])],
[HAVE_XIM=yes
AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
HAVE_XIM=no)
dnl Note this is non-standard. --with-xim does not control whether
dnl XIM support is compiled in, it only affects the runtime default of
dnl use_xim in xterm.c.
if test "${with_xim}" != "no"; then
AC_DEFINE(USE_XIM, 1,
[Define to 1 to default runtime use of XIM to on.])
fi
if test "${HAVE_XIM}" != "no"; then
late_CFLAGS=$CFLAGS
if test "$GCC" = yes; then
CFLAGS="$CFLAGS --pedantic-errors"
fi
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <X11/Xlib.h>
#include <X11/Xresource.h>]],
[[Display *display;
XrmDatabase db;
char *res_name;
char *res_class;
XIMProc callback;
XPointer *client_data;
#ifndef __GNUC__
/* If we're not using GCC, it's probably not XFree86, and this is
probably right, but we can't use something like --pedantic-errors. */
extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
char*, XIMProc, XPointer*);
#endif
(void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
client_data);]])],
[emacs_cv_arg6_star=yes])
AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
[Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
either XPointer or XPointer*.])dnl
if test "$emacs_cv_arg6_star" = yes; then
AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
else
AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
fi
CFLAGS=$late_CFLAGS
fi
# Check for XRender
HAVE_XRENDER=no
if test "${HAVE_X11}" = "yes"; then
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <X11/Intrinsic.h>
#include <X11/extensions/Xrender.h>
]],
[[return !XRenderQueryExtension;]])],
[AC_CHECK_LIB([Xrender], [XRenderQueryExtension], [HAVE_XRENDER=yes])])
if test $HAVE_XRENDER = yes; then
XRENDER_LIBS="-lXrender"
AC_SUBST(XRENDER_LIBS)
AC_DEFINE([HAVE_XRENDER], 1, [Define to 1 if XRender is available.])
fi
fi
HAVE_CAIRO=no
if test "${HAVE_X11}" = "yes"; then
if test "${with_cairo}" != "no"; then
CAIRO_REQUIRED=1.8.0
CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
if test $HAVE_CAIRO = yes; then
AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
CFLAGS="$CFLAGS $CAIRO_CFLAGS"
LIBS="$LIBS $CAIRO_LIBS"
AC_SUBST(CAIRO_CFLAGS)
AC_SUBST(CAIRO_LIBS)
else
AC_MSG_WARN([cairo requested but not found.])
fi
fi
fi
### Start of font-backend (under any platform) section.
# (nothing here yet -- this is a placeholder)
### End of font-backend (under any platform) section.
### Start of font-backend (under X11) section.
if test "${HAVE_X11}" = "yes"; then
if test $HAVE_CAIRO = yes; then
dnl Strict linkers fail with
dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
dnl if -lfreetype is not specified.
dnl The following is needed to set FREETYPE_LIBS.
EMACS_CHECK_MODULES([FREETYPE], [freetype2])
test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(cairo requires libfreetype)
EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
test "$HAVE_FONTCONFIG" = "no" && AC_MSG_ERROR(cairo requires libfontconfig)
dnl For the "Does Emacs use" message at the end.
HAVE_XFT=no
else
## Use -lXft if available, unless '--with-xft=no'.
HAVE_XFT=maybe
if test "x${with_x}" = "xno"; then
with_xft="no";
fi
if test "$with_xft" != no; then
EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
with_xft=$HAVE_FONTCONFIG
fi
if test "x${with_xft}" != "xno"; then
EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
## Because xterm.c uses XRenderQueryExtension when XFT is
## enabled, we also need to link to -lXrender.
if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
OLD_CPPFLAGS="$CPPFLAGS"
OLD_CFLAGS="$CFLAGS"
OLD_LIBS="$LIBS"
CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
CFLAGS="$CFLAGS $XFT_CFLAGS"
LIBS="$XFT_LIBS $LIBS"
AC_CHECK_HEADER(X11/Xft/Xft.h,
AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
[[#include <X11/X.h>]])
if test "${HAVE_XFT}" = "yes"; then
AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
AC_SUBST(XFT_LIBS)
C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
fi # "${HAVE_XFT}" = "yes"
CPPFLAGS=$OLD_CPPFLAGS
CFLAGS=$OLD_CFLAGS
LIBS=$OLD_LIBS
else
# Make sure XFT is disabled if we found XFT but not XRender
HAVE_XFT=no
fi # "$HAVE_XFT" != no
fi # "x${with_xft}" != "xno"
if test "$HAVE_XFT" != "yes"; then
dnl For the "Does Emacs use" message at the end.
HAVE_XFT=no
HAVE_FREETYPE=no
else
dnl Strict linkers fail with
dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
dnl if -lfreetype is not specified.
dnl The following is needed to set FREETYPE_LIBS.
EMACS_CHECK_MODULES([FREETYPE], [freetype2])
test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
fi
fi # $HAVE_CAIRO != yes
HAVE_LIBOTF=no
if test "${HAVE_FREETYPE}" = "yes"; then
AC_DEFINE(HAVE_FREETYPE, 1,
[Define to 1 if using the freetype and fontconfig libraries.])
OLD_CFLAGS=$CFLAGS
OLD_LIBS=$LIBS
CFLAGS="$CFLAGS $FREETYPE_CFLAGS"
LIBS="$FREETYPE_LIBS $LIBS"
AC_CHECK_FUNCS(FT_Face_GetCharVariantIndex)
CFLAGS=$OLD_CFLAGS
LIBS=$OLD_LIBS
if test "${with_libotf}" != "no"; then
EMACS_CHECK_MODULES([LIBOTF], [libotf])
if test "$HAVE_LIBOTF" = "yes"; then
AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
HAVE_OTF_GET_VARIATION_GLYPHS=yes,
HAVE_OTF_GET_VARIATION_GLYPHS=no)
if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
[Define to 1 if libotf has OTF_get_variation_glyphs.])
fi
if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
[Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
fi
fi
fi
dnl FIXME should there be an error if HAVE_FREETYPE != yes?
dnl Does the new font backend require it, or can it work without it?
fi
HAVE_M17N_FLT=no
if test "${HAVE_LIBOTF}" = yes; then
if test "${with_m17n_flt}" != "no"; then
EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
if test "$HAVE_M17N_FLT" = "yes"; then
AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
fi
fi
fi
else # "${HAVE_X11}" != "yes"
HAVE_XFT=no
HAVE_FREETYPE=no
HAVE_LIBOTF=no
HAVE_M17N_FLT=no
fi # "${HAVE_X11}" != "yes"
HAVE_HARFBUZZ=no
### On MS-Windows we use hb_font_get_nominal_glyph, which appeared
### in HarfBuzz version 1.2.3
if test "${HAVE_W32}" = "yes"; then
harfbuzz_required_ver=1.2.3
else
harfbuzz_required_ver=0.9.42
fi
if test "${HAVE_X11}" = "yes" && test "${HAVE_FREETYPE}" = "yes" \
|| test "${HAVE_W32}" = "yes"; then
if test "${with_harfbuzz}" != "no"; then
EMACS_CHECK_MODULES([HARFBUZZ], [harfbuzz >= $harfbuzz_required_ver])
if test "$HAVE_HARFBUZZ" = "yes"; then
AC_DEFINE(HAVE_HARFBUZZ, 1, [Define to 1 if using HarfBuzz.])
### mingw32 and Cygwin-w32 don't use -lharfbuzz, since they load
### the library dynamically.
if test "${HAVE_W32}" = "yes"; then
HARFBUZZ_LIBS=
fi
fi
fi
fi
### End of font-backend section.
AC_SUBST(FREETYPE_CFLAGS)
AC_SUBST(FREETYPE_LIBS)
AC_SUBST(FONTCONFIG_CFLAGS)
AC_SUBST(FONTCONFIG_LIBS)
AC_SUBST(HARFBUZZ_CFLAGS)
AC_SUBST(HARFBUZZ_LIBS)
AC_SUBST(LIBOTF_CFLAGS)
AC_SUBST(LIBOTF_LIBS)
AC_SUBST(M17N_FLT_CFLAGS)
AC_SUBST(M17N_FLT_LIBS)
if test "${HAVE_X11}" = "yes"; then
AC_CHECK_HEADER(X11/Xlib-xcb.h,
AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
if test "${HAVE_XCB}" = "yes"; then
AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
if test "${HAVE_X11_XCB}" = "yes"; then
AC_DEFINE(USE_XCB, 1,
[Define to 1 if you have the XCB library and X11-XCB library for mixed
X11/XCB programming.])
XCB_LIBS="-lX11-xcb -lxcb"
AC_SUBST(XCB_LIBS)
fi
fi
fi
### Use -lXpm if available, unless '--with-xpm=no'.
### mingw32 doesn't use -lXpm, since it loads the library dynamically.
### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
### we need to set LDFLAGS accordingly.
HAVE_XPM=no
LIBXPM=
if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
if test "${with_xpm}" != "no"; then
SAVE_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -L/usr/lib/noX"
AC_CHECK_HEADER(noX/xpm.h,
[AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
if test "${HAVE_XPM}" = "yes"; then
AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
[emacs_cv_cpp_xpm_return_alloc_pixels],
[AC_EGREP_CPP(no_return_alloc_pixels,
[#include "noX/xpm.h"
#ifndef XpmReturnAllocPixels
no_return_alloc_pixels
#endif
], emacs_cv_cpp_xpm_return_alloc_pixels=no,
emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
HAVE_XPM=no
LDFLAGS="$SAVE_LDFLAGS"
fi
fi
fi
if test "${HAVE_XPM}" = "yes"; then
AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
LIBXPM=-lXpm
fi
fi
if test "${HAVE_X11}" = "yes"; then
dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
case $opsys,$with_xpm_set,$with_xpm in
aix4-2,set,yes) ;;
aix4-2,*) with_xpm=no;;
esac
if test "${with_xpm}" != "no"; then
AC_CHECK_HEADER(X11/xpm.h,
[AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
if test "${HAVE_XPM}" = "yes"; then
AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
[emacs_cv_cpp_xpm_return_alloc_pixels],
[AC_EGREP_CPP(no_return_alloc_pixels,
[#include "X11/xpm.h"
#ifndef XpmReturnAllocPixels
no_return_alloc_pixels
#endif
], emacs_cv_cpp_xpm_return_alloc_pixels=no,
emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
HAVE_XPM=no
fi
fi
fi
if test "${HAVE_XPM}" = "yes"; then
AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
LIBXPM=-lXpm
elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
LIBXPM=-lXpm
fi
fi
### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
### slightly different requirements wrt image libraries (it doesn't
### use -lXpm because it loads the xpm shared library dynamically at
### run time).
if test "${opsys}" = "mingw32"; then
if test "${with_xpm}" != "no"; then
AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
#define FOR_MSW 1])
fi
if test "${HAVE_XPM}" = "yes"; then
AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
fi
fi
AC_SUBST(LIBXPM)
### Use -ljpeg if available, unless '--with-jpeg=no'.
HAVE_JPEG=no
LIBJPEG=
if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
|| test "${HAVE_NS}" = "yes"; then
if test "${with_jpeg}" != "no"; then
AC_CACHE_CHECK([for jpeglib 6b or later],
[emacs_cv_jpeglib],
[OLD_LIBS=$LIBS
for emacs_cv_jpeglib in yes -ljpeg no; do
case $emacs_cv_jpeglib in
yes) ;;
no) break;;
*) LIBS="$LIBS $emacs_cv_jpeglib";;
esac
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
#include <stdio.h> /* jpeglib.h needs FILE and size_t. */
#include <jpeglib.h>
#include <jerror.h>
char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
struct jpeg_decompress_struct cinfo;
]],
[[
jpeg_create_decompress (&cinfo);
WARNMS (&cinfo, JWRN_JPEG_EOF);
jpeg_destroy_decompress (&cinfo);
]])],
[emacs_link_ok=yes],
[emacs_link_ok=no])
LIBS=$OLD_LIBS
test $emacs_link_ok = yes && break
done])
if test "$emacs_cv_jpeglib" != no; then
HAVE_JPEG=yes
AC_DEFINE([HAVE_JPEG], 1,
[Define to 1 if you have the jpeg library (typically -ljpeg).])
### mingw32 doesn't use -ljpeg, since it loads the library
### dynamically when needed, and doesn't want a run-time
### dependency on the jpeglib DLL.
test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
&& LIBJPEG=$emacs_cv_jpeglib
fi
fi
fi
AC_SUBST(LIBJPEG)
HAVE_LCMS2=no
LCMS2_CFLAGS=
LCMS2_LIBS=
if test "${with_lcms2}" != "no"; then
EMACS_CHECK_MODULES([LCMS2], [lcms2])
fi
if test "${HAVE_LCMS2}" = "yes"; then
AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
### mingw32 doesn't use -llcms2, since it loads the library dynamically.
if test "${opsys}" = "mingw32"; then
LCMS2_LIBS=
fi
fi
AC_SUBST(LCMS2_CFLAGS)
AC_SUBST(LCMS2_LIBS)
HAVE_ZLIB=no
LIBZ=
if test "${with_zlib}" != "no"; then
OLIBS=$LIBS
AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
LIBS=$OLIBS
case $ac_cv_search_inflateEnd in
-*) LIBZ=$ac_cv_search_inflateEnd ;;
esac
fi
if test "${HAVE_ZLIB}" = "yes"; then
AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
### mingw32 doesn't use -lz, since it loads the library dynamically.
if test "${opsys}" = "mingw32"; then
LIBZ=
fi
fi
AC_SUBST(LIBZ)
### Dynamic modules support
LIBMODULES=
HAVE_MODULES=no
MODULES_OBJ=
NEED_DYNLIB=no
case $opsys in
cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
darwin) MODULES_SUFFIX=".dylib" ;;
*) MODULES_SUFFIX=".so" ;;
esac
case "${opsys}" in
darwin) MODULES_SECONDARY_SUFFIX='.so' ;;
*) MODULES_SECONDARY_SUFFIX='' ;;
esac
if test "${with_modules}" != "no"; then
case $opsys in
gnu|gnu-linux)
LIBMODULES="-ldl"
HAVE_MODULES=yes
;;
cygwin|mingw32|darwin)
HAVE_MODULES=yes
;;
*)
# BSD systems have dlopen in libc.
AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
;;
esac
if test "${HAVE_MODULES}" = no; then
AC_MSG_ERROR([Dynamic modules are not supported on your system])
else
SAVE_LIBS=$LIBS
LIBS="$LIBS $LIBMODULES"
AC_CHECK_FUNCS([dladdr dlfunc])
LIBS=$SAVE_LIBS
fi
fi
if test "${HAVE_MODULES}" = yes; then
MODULES_OBJ="emacs-module.o"
NEED_DYNLIB=yes
AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
[System extension for dynamic libraries])
if test -n "${MODULES_SECONDARY_SUFFIX}"; then
AC_DEFINE_UNQUOTED(MODULES_SECONDARY_SUFFIX, "$MODULES_SECONDARY_SUFFIX",
[Alternative system extension for dynamic libraries.])
fi
fi
AC_SUBST(MODULES_OBJ)
AC_SUBST(LIBMODULES)
AC_SUBST(HAVE_MODULES)
AC_SUBST(MODULES_SUFFIX)
AC_SUBST(MODULES_SECONDARY_SUFFIX)
AC_CONFIG_FILES([src/emacs-module.h])
AC_SUBST_FILE([module_env_snippet_25])
AC_SUBST_FILE([module_env_snippet_26])
AC_SUBST_FILE([module_env_snippet_27])
AC_SUBST_FILE([module_env_snippet_28])
AC_SUBST_FILE([module_env_snippet_29])
module_env_snippet_25="$srcdir/src/module-env-25.h"
module_env_snippet_26="$srcdir/src/module-env-26.h"
module_env_snippet_27="$srcdir/src/module-env-27.h"
module_env_snippet_28="$srcdir/src/module-env-28.h"
module_env_snippet_29="$srcdir/src/module-env-29.h"
emacs_major_version="${PACKAGE_VERSION%%.*}"
AC_SUBST(emacs_major_version)
### Emacs Lisp native compiler support
AC_DEFUN([libgccjit_smoke_test], [
AC_LANG_SOURCE(
[[#include <libgccjit.h>
#include <stdlib.h>
#include <stdio.h>
int
main (int argc, char **argv)
{
gcc_jit_context *ctxt;
gcc_jit_result *result;
ctxt = gcc_jit_context_acquire ();
if (!ctxt)
exit (1);
gcc_jit_type *int_type =
gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
gcc_jit_function *func =
gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
int_type, "foo", 0, NULL, 0);
gcc_jit_block *block = gcc_jit_function_new_block (func, "foo");
gcc_jit_block_end_with_return (
block,
NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, int_type, 1));
result = gcc_jit_context_compile (ctxt);
if (!result)
exit (1);
typedef int (*fn_type) (void);
fn_type foo =
(fn_type)gcc_jit_result_get_code (result, "foo");
if (!foo)
exit (1);
if (foo () != 1)
exit (1);
gcc_jit_context_release (ctxt);
gcc_jit_result_release (result);
return 0;
}]])])
AC_DEFUN([libgccjit_not_found], [
AC_MSG_ERROR([ELisp native compiler was requested, but libgccjit was not found.
Please try installing libgccjit or a similar package.
If you are sure you want Emacs be compiled without ELisp native compiler,
pass the --without-native-compilation option to configure.])])
AC_DEFUN([libgccjit_dev_not_found], [
AC_MSG_ERROR([ELisp native compiler was requested, but libgccjit header files were
not found.
Please try installing libgccjit-dev or a similar package.
If you are sure you want Emacs be compiled without ELisp native compiler,
pass the --without-native-compilation option to configure.])])
AC_DEFUN([libgccjit_broken], [
AC_MSG_ERROR([The installed libgccjit failed to compile and run a test program using
the libgccjit library; see config.log for the details of the failure.
The test program can be found here:
<https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html>.
You can try compiling it yourself to investigate the issues.
Please report the issue to your distribution if libgccjit was installed
through that.
You can find the instructions on how to compile and install libgccjit from
source on this site:
<https://gcc.gnu.org/wiki/JIT>.])])
HAVE_NATIVE_COMP=no
LIBGCCJIT_LIBS=
LIBGCCJIT_CFLAGS=
if test "$canonical" = i686-pc-cygwin; then
if test "${with_cygwin32_native_compilation}" = yes; then
with_native_compilation=yes
elif test "${with_native_compilation}" != no; then
AC_MSG_ERROR([Native compilation is not supported on 32-bit Cygwin.
If you really want to try it anyway, use the configure option
'--with-cygwin32-native-compilation'.])
fi
fi
if test "${with_native_compilation}" != "no"; then
if test "${HAVE_PDUMPER}" = no; then
AC_MSG_ERROR(['--with-native-compilation' requires '--with-dumping=pdumper'])
fi
if test "${HAVE_ZLIB}" = no; then
AC_MSG_ERROR(['--with-native-compilation' requires zlib])
fi
SAVE_CFLAGS=$CFLAGS
SAVE_LIBS=$LIBS
if test "${opsys}" = "darwin"; then
# Ensure libgccjit installed by Homebrew or macports can be found.
if test -n "$BREW"; then
if test -n "`$BREW --prefix --installed libgccjit 2>/dev/null`"; then
MAC_CFLAGS="-I$(dirname $($BREW ls -v libgccjit | \
grep libgccjit.h))"
MAC_LIBS="-L$(dirname $($BREW ls -v libgccjit| \
grep libgccjit.so\$))"
fi
fi
if test -n "$HAVE_MACPORTS"; then
# Determine which gcc version has been installed (gcc11, for
# instance). Use the latest version, if more than one is
# available. (We filter out the gcc4 packages, because they
# don't support jit, and they have names like "gcc49" that
# sort later than "gcc11".)
PORT_PACKAGE=$(port installed active | grep '^ *gcc@<:@0-9@:>@* ' | \
awk '{ print $1; }' | grep -v 'gcc4@<:@0-9@:>@' | \
sort -V | tail -n 1)
if test -n "$PORT_PACKAGE"; then
MAC_CFLAGS="-I$(dirname $(port contents $PORT_PACKAGE | \
grep libgccjit.h))"
MAC_LIBS="-L$(dirname $(port contents $PORT_PACKAGE | \
grep libgccjit.dylib))"
fi
fi
if test -n "$MAC_CFLAGS" && test -n "$MAC_LIBS"; then
CFLAGS="$CFLAGS ${MAC_CFLAGS}"
LIBS="$LIBS ${MAC_LIBS}"
fi
fi
# Check if libgccjit is available.
AC_CHECK_LIB(gccjit, gcc_jit_context_acquire, [], [libgccjit_not_found])
AC_CHECK_HEADERS(libgccjit.h, [], [libgccjit_dev_not_found])
# Check if libgccjit really works.
AC_RUN_IFELSE([libgccjit_smoke_test], [], [libgccjit_broken])
HAVE_NATIVE_COMP=yes
case "${opsys}" in
# mingw32 loads the library dynamically.
mingw32) ;;
# OpenBSD doesn't have libdl, all the functions are in libc
netbsd|openbsd)
LIBGCCJIT_LIBS="-lgccjit" ;;
darwin)
LIBGCCJIT_CFLAGS="${MAC_CFLAGS}"
LIBGCCJIT_LIBS="${MAC_LIBS} -lgccjit -ldl";;
*)
LIBGCCJIT_LIBS="-lgccjit -ldl" ;;
esac
NEED_DYNLIB=yes
AC_DEFINE(HAVE_NATIVE_COMP, 1, [Define to 1 if native compiler is available.])
CFLAGS=$SAVE_CFLAGS
LIBS=$SAVE_LIBS
fi
AC_DEFINE_UNQUOTED(NATIVE_ELISP_SUFFIX, ".eln",
[System extension for native compiled elisp])
AC_SUBST(HAVE_NATIVE_COMP)
AC_SUBST(LIBGCCJIT_CFLAGS)
AC_SUBST(LIBGCCJIT_LIBS)
DYNLIB_OBJ=
if test "${NEED_DYNLIB}" = yes; then
DYNLIB_OBJ="dynlib.o"
fi
AC_SUBST(DYNLIB_OBJ)
### Use -lpng if available, unless '--with-png=no'.
HAVE_PNG=no
LIBPNG=
PNG_CFLAGS=
if test "${with_png}" != no; then
# mingw32 loads the library dynamically.
if test "$opsys" = mingw32; then
AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
|| test "${HAVE_NS}" = "yes"; then
EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
if test $HAVE_PNG = yes; then
LIBPNG=$PNG_LIBS
else
# Test old way in case pkg-config doesn't have it (older machines).
AC_MSG_CHECKING([for libpng not configured by pkg-config])
png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
# libpng-config does not work; configure by hand.
# Debian unstable as of July 2003 has multiple libpngs, and puts png.h
# in /usr/include/libpng.
if test -r /usr/include/libpng/png.h &&
test ! -r /usr/include/png.h; then
png_cflags=-I/usr/include/libpng
else
png_cflags=
fi
png_ldflags='-lpng'
}
SAVE_CFLAGS=$CFLAGS
SAVE_LIBS=$LIBS
CFLAGS="$CFLAGS $png_cflags"
LIBS="$png_ldflags -lz -lm $LIBS"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <png.h>]],
[[return !png_get_channels (0, 0);]])],
[HAVE_PNG=yes
PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
LIBPNG=$png_ldflags])
CFLAGS=$SAVE_CFLAGS
LIBS=$SAVE_LIBS
AC_MSG_RESULT([$HAVE_PNG])
fi
# $LIBPNG requires explicit -lz in some cases.
# We don't know what those cases are, exactly, so play it safe and
# append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
case " $LIBPNG ",$LIBZ in
*' -lz '*, | *' ',?*) ;;
*) LIBPNG="$LIBPNG -lz" ;;
esac
fi
fi
if test $HAVE_PNG = yes; then
AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
SAVE_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $PNG_CFLAGS"
AC_CHECK_DECL([png_longjmp],
[],
[AC_DEFINE([PNG_DEPSTRUCT], [],
[Define to empty to suppress deprecation warnings when building
with --enable-gcc-warnings and with libpng versions before 1.5,
which lack png_longjmp.])],
[[#include <png.h>
]])
CFLAGS=$SAVE_CFLAGS
fi
AC_SUBST(LIBPNG)
AC_SUBST(PNG_CFLAGS)
### Use -ltiff if available, unless '--with-tiff=no'.
### mingw32 doesn't use -ltiff, since it loads the library dynamically.
HAVE_TIFF=no
LIBTIFF=
if test "${opsys}" = "mingw32"; then
if test "${with_tiff}" != "no"; then
AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
fi
if test "${HAVE_TIFF}" = "yes"; then
AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
fi
elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
|| test "${HAVE_NS}" = "yes"; then
if test "${with_tiff}" != "no"; then
AC_CHECK_HEADER(tiffio.h,
[tifflibs="-lz -lm"
# At least one tiff package requires the jpeg library.
if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
fi
if test "${HAVE_TIFF}" = "yes"; then
AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
dnl FIXME -lz -lm, as per libpng?
LIBTIFF=-ltiff
fi
fi
AC_SUBST(LIBTIFF)
### Use -lgif or -lungif if available, unless '--with-gif=no'.
### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
HAVE_GIF=no
LIBGIF=
if test "${opsys}" = "mingw32"; then
if test "${with_gif}" != "no"; then
AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
fi
if test "${HAVE_GIF}" = "yes"; then
AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
fi
elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
|| test "${HAVE_W32}" = "yes" || test "${HAVE_NS}" = "yes"; then
AC_CHECK_HEADER(gif_lib.h,
# EGifPutExtensionLast only exists from version libungif-4.1.0b1.
# Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
[AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
[AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
if test "$HAVE_GIF" = yes; then
LIBGIF=-lgif
elif test "$HAVE_GIF" = maybe; then
# If gif_lib.h but no libgif, try libungif.
AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
test "$HAVE_GIF" = yes && LIBGIF=-lungif
fi
if test "${HAVE_GIF}" = "yes"; then
AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
fi
fi
AC_SUBST(LIBGIF)
dnl Check for required libraries.
MISSING=
WITH_IFAVAILABLE=
if test "${HAVE_X11}" = "yes"; then
case $with_xpm,$HAVE_XPM in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="libXpm"
WITH_IFAVAILABLE="--with-xpm=ifavailable";;
esac
case $with_jpeg,$HAVE_JPEG in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING libjpeg"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-jpeg=ifavailable";;
esac
case $with_png,$HAVE_PNG in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING libpng"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-png=ifavailable";;
esac
case $with_gif,$HAVE_GIF in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING libgif/libungif"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gif=ifavailable";;
esac
case $with_tiff,$HAVE_TIFF in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING libtiff"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-tiff=ifavailable";;
esac
fi
case $with_gnutls,$HAVE_GNUTLS in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING gnutls"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gnutls=ifavailable";;
esac
case $with_json,$HAVE_JSON in
no,* | ifavailable,* | *,yes) ;;
*) MISSING="$MISSING json"
WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-json=ifavailable";;
esac
if test "X${MISSING}" != X; then
# If we have a missing library, and we don't have pkg-config installed,
# the missing pkg-config may be the reason. Give the user a hint.
if test "X${PKG_CONFIG}" = X; then
AC_MSG_WARN([Unable to locate a usable pkg-config])
fi
AC_MSG_ERROR([The following required libraries were not found:
$MISSING
Maybe some development libraries/packages are missing?
To build anyway, give:
$WITH_IFAVAILABLE
as options to configure.])
fi
### Use -lgpm if available, unless '--with-gpm=no'.
HAVE_GPM=no
LIBGPM=
if test "${with_gpm}" != "no"; then
AC_CHECK_HEADER(gpm.h,
[AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
if test "${HAVE_GPM}" = "yes"; then
AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
LIBGPM=-lgpm
fi
fi
AC_SUBST(LIBGPM)
dnl Check for malloc/malloc.h on darwin
AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
GNUSTEP_CFLAGS=
### Use NeXTstep API to implement GUI.
if test "${HAVE_NS}" = "yes"; then
AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
if test "${NS_IMPL_COCOA}" = "yes"; then
AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
fi
if test "${NS_IMPL_GNUSTEP}" = "yes"; then
AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
if test $NS_GNUSTEP_CONFIG != yes; then
# See also .m.o rule in src/Makefile.in. */
# FIXME: are all these flags really needed? Document here why. */
GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
## Extra CFLAGS applied to src/*.m files.
GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
fi
fi
OTHER_FILES=ns-app
fi
### Use session management (-lSM -lICE) if available
HAVE_X_SM=no
LIBXSM=
if test "${HAVE_X11}" = "yes"; then
AC_CHECK_HEADER(X11/SM/SMlib.h,
[AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
if test "${HAVE_X_SM}" = "yes"; then
AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
LIBXSM="-lSM -lICE"
fi
fi
AC_SUBST(LIBXSM)
### Use XRandr (-lXrandr) if available
HAVE_XRANDR=no
if test "${HAVE_X11}" = "yes"; then
XRANDR_REQUIRED=1.2.2
XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
if test $HAVE_XRANDR = no; then
# Test old way in case pkg-config doesn't have it (older machines).
# Include Xrender.h by hand to work around bug in older Xrandr.h
# (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
AC_CHECK_HEADER(X11/extensions/Xrandr.h,
[AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
[], [AC_INCLUDES_DEFAULT
#include <X11/extensions/Xrender.h>])
if test $HAVE_XRANDR = yes; then
XRANDR_LIBS=-lXrandr
fi
fi
if test $HAVE_XRANDR = yes; then
AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
fi
fi
AC_SUBST(XRANDR_CFLAGS)
AC_SUBST(XRANDR_LIBS)
### Use Xinerama (-lXinerama) if available
HAVE_XINERAMA=no
if test "${HAVE_X11}" = "yes"; then
XINERAMA_REQUIRED=1.0.2
XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
if test $HAVE_XINERAMA = no; then
# Test old way in case pkg-config doesn't have it (older machines).
AC_CHECK_HEADER(X11/extensions/Xinerama.h,
[AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
if test $HAVE_XINERAMA = yes; then
XINERAMA_LIBS=-lXinerama
fi
fi
if test $HAVE_XINERAMA = yes; then
AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
fi
fi
AC_SUBST(XINERAMA_CFLAGS)
AC_SUBST(XINERAMA_LIBS)
### Use Xfixes (-lXfixes) if available
HAVE_XFIXES=no
if test "${HAVE_X11}" = "yes"; then
XFIXES_REQUIRED=4.0.0
XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
if test $HAVE_XFIXES = no; then
# Test old way in case pkg-config doesn't have it (older machines).
AC_CHECK_HEADER(X11/extensions/Xfixes.h,
[AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
if test $HAVE_XFIXES = yes; then
XFIXES_LIBS=-lXfixes
fi
fi
if test $HAVE_XFIXES = yes; then
AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
fi
fi
AC_SUBST(XFIXES_CFLAGS)
AC_SUBST(XFIXES_LIBS)
### Use Xdbe (-lXdbe) if available
HAVE_XDBE=no
if test "${HAVE_X11}" = "yes"; then
if test "${with_xdbe}" != "no"; then
AC_CHECK_HEADER(X11/extensions/Xdbe.h,
[AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
[],
[#include <X11/Xlib.h>
])
fi
if test $HAVE_XDBE = yes; then
XDBE_LIBS=-lXext
fi
if test $HAVE_XDBE = yes; then
AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
fi
fi
AC_SUBST(XDBE_CFLAGS)
AC_SUBST(XDBE_LIBS)
### Use libxml (-lxml2) if available
### mingw32 doesn't use -lxml2, since it loads the library dynamically.
HAVE_LIBXML2=no
if test "${with_xml2}" != "no"; then
### I'm not sure what the version number should be, so I just guessed.
EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
# Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
SAVE_CPPFLAGS="$CPPFLAGS"
if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
case $xcsdkdir in
*[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
xcsdkdir="" ;;
esac
fi
CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
AC_CHECK_HEADER(libxml/HTMLparser.h,
[AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
[#include <libxml/HTMLparser.h>])])
CPPFLAGS="$SAVE_CPPFLAGS"
if test "${HAVE_LIBXML2}" = "yes"; then
LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
LIBXML2_LIBS="-lxml2"
fi
fi
if test "${HAVE_LIBXML2}" = "yes"; then
if test "${opsys}" != "mingw32"; then
AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
[$LIBXML2_LIBS])
else
LIBXML2_LIBS=""
fi
if test "${HAVE_LIBXML2}" = "yes"; then
AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
else
LIBXML2_LIBS=""
LIBXML2_CFLAGS=""
fi
fi
fi
AC_SUBST(LIBXML2_LIBS)
AC_SUBST(LIBXML2_CFLAGS)
BLESSMAIL_TARGET=
LIBS_MAIL=
if test ! "$with_mailutils"; then
# Check for mail-locking functions in a "mail" library. Probably this should
# have the same check as for liblockfile below.
AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
if test $have_mail = yes; then
LIBS_MAIL=-lmail
AC_DEFINE([HAVE_LIBMAIL], [1],
[Define to 1 if you have the 'mail' library (-lmail).])
OLD_LIBS=$LIBS
LIBS="$LIBS_MAIL $LIBS"
AC_CHECK_FUNCS([touchlock])
LIBS=$OLD_LIBS
fi
dnl Debian, at least:
AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
if test $have_lockfile = yes; then
LIBS_MAIL=-llockfile
AC_DEFINE([HAVE_LIBLOCKFILE], [1],
[Define to 1 if you have the 'lockfile' library (-llockfile).])
else
# If we have the shared liblockfile, assume we must use it for mail
# locking (e.g. Debian). If we couldn't link against liblockfile
# (no liblockfile.a installed), ensure that we don't need to.
dnl This works for files generally, not just executables.
dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
[/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
if test "$ac_cv_prog_liblockfile" = yes; then
AC_MSG_ERROR([Shared liblockfile found but can't link against it.
This probably means that movemail could lose mail.
There may be a 'development' package to install containing liblockfile.])
fi
fi
AC_CHECK_HEADERS([maillock.h])
## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
## interlock access to the mail spool. The alternative is a lock file named
## /usr/spool/mail/$USER.lock.
mail_lock=no
case $opsys in
aix4-2) mail_lock="lockf" ;;
gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
## On GNU/Linux systems, both methods are used by various mail programs.
## I assume most people are using newer mailers that have heard of flock.
## Change this if you need to.
## Debian contains a patch which says: "On Debian/GNU/Linux systems,
## configure gets the right answers, and that means *NOT* using flock.
## Using flock is guaranteed to be the wrong thing. See Debian Policy
## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
## Debian maintainer hasn't provided a clean fix for Emacs.
## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
## HAVE_MAILLOCK_H are defined, so the following appears to be the
## correct logic. -- fx
## We must check for HAVE_LIBLOCKFILE too, as movemail does.
## liblockfile is a Free Software replacement for libmail, used on
## Debian systems and elsewhere. -rfr.
gnu-*)
mail_lock="flock"
if test $have_mail = yes || test $have_lockfile = yes; then
test $ac_cv_header_maillock_h = yes && mail_lock=no
fi ;;
mingw32)
mail_lock="none-needed" ;;
esac
case $mail_lock in
flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
[Define if the mailer uses flock to interlock the mail spool.]);;
lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
[Define if the mailer uses lockf to interlock the mail spool.]);;
none-needed) ;;
*) BLESSMAIL_TARGET="need-blessmail" ;;
esac
fi
AC_SUBST([BLESSMAIL_TARGET])
AC_SUBST([LIBS_MAIL])
HAVE_SECCOMP=no
AC_CHECK_HEADERS(
[linux/seccomp.h linux/filter.h],
[AC_CHECK_DECLS(
[SECCOMP_SET_MODE_FILTER, SECCOMP_FILTER_FLAG_TSYNC],
[HAVE_SECCOMP=yes], [],
[[
#include <linux/seccomp.h>
]])])
AC_SUBST([HAVE_SECCOMP])
EMACS_CHECK_MODULES([LIBSECCOMP], [libseccomp >= 2.4.0])
AC_SUBST([HAVE_LIBSECCOMP])
AC_SUBST([LIBSECCOMP_LIBS])
AC_SUBST([LIBSECCOMP_CFLAGS])
OLD_LIBS=$LIBS
LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
AC_CHECK_FUNCS(accept4 fchdir gethostname \
getrusage get_current_dir_name \
lrand48 random rint trunc \
select getpagesize setlocale newlocale \
getrlimit setrlimit shutdown \
pthread_sigmask strsignal setitimer \
sendto recvfrom getsockname getifaddrs freeifaddrs \
gai_strerror sync \
getpwent endpwent getgrent endgrent \
cfmakeraw cfsetspeed __executable_start log2 pthread_setname_np \
pthread_set_name_np)
LIBS=$OLD_LIBS
if test "$ac_cv_func_pthread_setname_np" = "yes"; then
AC_CACHE_CHECK(
[whether pthread_setname_np takes a single argument],
[emacs_cv_pthread_setname_np_1arg],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>]],
[[pthread_setname_np ("a");]])],
[emacs_cv_pthread_setname_np_1arg=yes],
[emacs_cv_pthread_setname_np_1arg=no])])
if test "$emacs_cv_pthread_setname_np_1arg" = "yes"; then
AC_DEFINE(
HAVE_PTHREAD_SETNAME_NP_1ARG, 1,
[Define to 1 if pthread_setname_np takes a single argument.])
else
AC_CACHE_CHECK(
[whether pthread_setname_np takes three arguments],
[emacs_cv_pthread_setname_np_3arg],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <pthread.h>]],
[[pthread_setname_np (0, "%s", "a");]])],
[emacs_cv_pthread_setname_np_3arg=yes],
[emacs_cv_pthread_setname_np_3arg=no])])
if test "$emacs_cv_pthread_setname_np_3arg" = "yes"; then
AC_DEFINE(
HAVE_PTHREAD_SETNAME_NP_3ARG, 1,
[Define to 1 if pthread_setname_np takes three arguments.])
fi
fi
fi
dnl No need to check for posix_memalign if aligned_alloc works.
AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
case $with_unexec,$canonical in
yes,alpha*)
AC_CHECK_DECL([__ELF__], [],
[AC_MSG_ERROR([Non-ELF systems are not supported on this platform.])]);;
esac
# Dump loading
AC_CHECK_FUNCS([posix_madvise])
dnl Cannot use AC_CHECK_FUNCS
AC_CACHE_CHECK([for __builtin_frame_address],
[emacs_cv_func___builtin_frame_address],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
[emacs_cv_func___builtin_frame_address=yes],
[emacs_cv_func___builtin_frame_address=no])])
if test $emacs_cv_func___builtin_frame_address = yes; then
AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
[Define to 1 if you have the '__builtin_frame_address' function.])
fi
AC_CACHE_CHECK([for __builtin_unwind_init],
emacs_cv_func___builtin_unwind_init,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
emacs_cv_func___builtin_unwind_init=yes,
emacs_cv_func___builtin_unwind_init=no)])
if test $emacs_cv_func___builtin_unwind_init = yes; then
AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
[Define to 1 if you have the '__builtin_unwind_init' function.])
fi
AC_CHECK_HEADERS_ONCE(sys/un.h)
AC_FUNC_FSEEKO
# UNIX98 PTYs.
AC_CHECK_FUNCS(grantpt)
# PTY-related GNU extensions.
AC_CHECK_FUNCS(getpt posix_openpt)
dnl Run a test program that contains a call to tputs, a call that is
dnl never executed. This tests whether a pre-'main' dynamic linker
dnl works with the library. It's too much trouble to actually call
dnl tputs in the test program, due to portability hassles. When
dnl cross-compiling, assume the test program will run if it links.
AC_DEFUN([tputs_link_source], [
AC_LANG_SOURCE(
[[extern void tputs (const char *, int, int (*)(int));
int main (int argc, char **argv)
{
if (argc == 10000)
tputs (argv[0], 0, 0);
return 0;
}]])
])
# Check this now, so that we will NOT find the above functions in ncurses.
# That is because we have not set up to link ncurses in lib-src.
# It's better to believe a function is not available
# than to expect to find it in ncurses.
# Also we need tputs and friends to be able to build at all.
AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
[if test "${opsys}" = "mingw32"; then
emacs_cv_tputs_lib='none required'
else
# curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
tputs_libraries='tinfo ncurses terminfo curses termcap tinfow ncursesw'
for tputs_library in '' $tputs_libraries; do
OLIBS=$LIBS
if test -z "$tputs_library"; then
emacs_cv_tputs_lib='none required'
else
emacs_cv_tputs_lib=-l$tputs_library
LIBS="$emacs_cv_tputs_lib $LIBS"
fi
AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
[AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
LIBS=$OLIBS
if test "X$emacs_cv_tputs_lib" != Xno; then
break
fi
done
fi])
AS_CASE(["$emacs_cv_tputs_lib"],
[no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
The following libraries were tried (in order):
libtinfo, libncurses, libterminfo, libcurses, libtermcap
Please try installing whichever of these libraries is most appropriate
for your system, together with its header files.
For example, a libncurses-dev(el) or similar package.])],
[-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
[*], [LIBS_TERMCAP=])
## Use termcap instead of terminfo?
## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
TERMINFO=yes
## FIXME? In the cases below where we unconditionally set
## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
## if that was found above to have tputs.
## Should we use the gnu* logic everywhere?
case "$opsys" in
## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
## The ncurses library has been moved out of the System framework in
## Mac OS X 10.2. So if configure detects it, set the command-line
## option to use it.
darwin) LIBS_TERMCAP="-lncurses" ;;
gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
freebsd)
AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
[[#if __FreeBSD_version < 400000
fail;
#endif
]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
if test $emacs_cv_freebsd_terminfo = yes; then
LIBS_TERMCAP="-lncurses"
else
TERMINFO=no
LIBS_TERMCAP="-ltermcap"
fi
;;
mingw32)
TERMINFO=no
LIBS_TERMCAP=
;;
netbsd)
if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
TERMINFO=no
LIBS_TERMCAP="-ltermcap"
fi
;;
openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
## hpux: Make sure we get select from libc rather than from libcurses
## because libcurses on HPUX 10.10 has a broken version of select.
## We used to use -lc -lcurses, but this may be cleaner.
## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
# set that way, now it uses the default). Isn't this a contradiction?
hpux*) LIBS_TERMCAP="-ltermcap" ;;
esac
TERMCAP_OBJ=tparam.o
if test $TERMINFO = yes; then
AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
TERMCAP_OBJ=terminfo.o
AC_CACHE_CHECK([whether $LIBS_TERMCAP library defines BC],
[emacs_cv_terminfo_defines_BC],
[OLD_LIBS=$LIBS
LIBS="$LIBS $LIBS_TERMCAP"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern char *BC;]], [[return !*BC;]])],
[emacs_cv_terminfo_defines_BC=yes],
[emacs_cv_terminfo_defines_BC=no])
LIBS=$OLD_LIBS])
if test "$emacs_cv_terminfo_defines_BC" = yes; then
AC_DEFINE([TERMINFO_DEFINES_BC], 1, [Define to 1 if the
terminfo library defines the variables BC, PC, and UP.])
fi
fi
if test "X$LIBS_TERMCAP" = "X-lncurses"; then
AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
fi
AC_SUBST(LIBS_TERMCAP)
AC_SUBST(TERMCAP_OBJ)
# GNU/Linux-specific timer functions.
AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/timerfd.h>
]],
[[timerfd_create (CLOCK_REALTIME,
TFD_CLOEXEC | TFD_NONBLOCK);
timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
[emacs_cv_have_timerfd=yes],
[emacs_cv_have_timerfd=no])])
if test "$emacs_cv_have_timerfd" = yes; then
AC_DEFINE([HAVE_TIMERFD], 1,
[Define to 1 if timerfd functions are supported as in GNU/Linux.])
fi
# Alternate stack for signal handlers.
AC_CACHE_CHECK([whether signals can be handled on alternate stack],
[emacs_cv_alternate_stack],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <signal.h>
]],
[[stack_t ss;
struct sigaction sa;
ss.ss_sp = malloc (SIGSTKSZ);
ss.ss_size = SIGSTKSZ;
sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
sigaltstack (&ss, 0);
sigaction (SIGSEGV, &sa, 0);]])],
[emacs_cv_alternate_stack=yes],
[emacs_cv_alternate_stack=no])])
# Do we need the Hesiod library to provide the support routines?
dnl FIXME? Should we be skipping this on Darwin too?
LIBHESIOD=
LIBRESOLV=
if test "$with_hesiod" != no ; then
# Don't set $LIBS here -- see comments above. FIXME which comments?
resolv=no
AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
[AC_CHECK_LIB(resolv, res_send, resolv=yes,
[AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
if test "$resolv" = yes ; then
RESOLVLIB=-lresolv
else
RESOLVLIB=
fi
hesiod=no
AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
hesiod=yes, :, $RESOLVLIB)])
if test x"$hesiod" = xyes; then
LIBHESIOD=-lhesiod
LIBRESOLV=$RESOLVLIB
fi
fi
AC_SUBST(LIBHESIOD)
AC_SUBST(LIBRESOLV)
# These tell us which Kerberos-related libraries to use.
COM_ERRLIB=
CRYPTOLIB=
KRB5LIB=
DESLIB=
KRB4LIB=
if test "${with_kerberos}" != no; then
OLD_LIBS=$LIBS
AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
if test $have_com_err = yes; then
COM_ERRLIB=-lcom_err
LIBS="$COM_ERRLIB $LIBS"
fi
AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
if test $have_crypto = yes; then
CRYPTOLIB=-lcrypto
LIBS="$CRYPTOLIB $LIBS"
fi
AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
if test $have_k5crypto = yes; then
CRYPTOLIB=-lk5crypto
LIBS="$CRYPTOLIB $LIBS"
fi
AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
if test $have_krb5=yes; then
KRB5LIB=-lkrb5
LIBS="$KRB5LIB $LIBS"
fi
dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
if test "${with_kerberos5}" = no; then
AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
if test $have_des425 = yes; then
DESLIB=-ldes425
LIBS="$DESLIB $LIBS"
else
AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
if test $have_des = yes; then
DESLIB=-ldes
LIBS="$DESLIB $LIBS"
fi
fi
AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
if test $have_krb4 = yes; then
KRB4LIB=-lkrb4
LIBS="$KRB4LIB $LIBS"
else
AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
if test $have_krb = yes; then
KRB4LIB=-lkrb
LIBS="$KRB4LIB $LIBS"
fi
fi
fi
if test "${with_kerberos5}" != no; then
AC_CHECK_HEADERS(krb5.h,
[AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
[#include <krb5.h>])])
else
AC_CHECK_HEADERS(krb.h,,
[AC_CHECK_HEADERS(kerberosIV/krb.h,,
[AC_CHECK_HEADERS(kerberos/krb.h)])])
fi
AC_CHECK_HEADERS(com_err.h)
LIBS=$OLD_LIBS
fi
AC_SUBST(COM_ERRLIB)
AC_SUBST(CRYPTOLIB)
AC_SUBST(KRB5LIB)
AC_SUBST(DESLIB)
AC_SUBST(KRB4LIB)
AC_CHECK_HEADERS(valgrind/valgrind.h)
AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
AC_CHECK_FUNCS_ONCE([__lsan_ignore_object])
AC_FUNC_FORK
dnl AC_CHECK_FUNCS_ONCE wouldn’t be right for snprintf, which needs
dnl the current CFLAGS etc.
AC_CHECK_FUNCS(snprintf)
dnl posix_spawn. The chdir and setsid functionality is relatively
dnl recent, so we check for it specifically.
AC_CHECK_HEADERS([spawn.h])
AC_SUBST([HAVE_SPAWN_H])
AC_CHECK_FUNCS([posix_spawn \
posix_spawn_file_actions_addchdir \
posix_spawn_file_actions_addchdir_np \
posix_spawnattr_setflags])
AC_SUBST([HAVE_POSIX_SPAWN])
AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR])
AC_SUBST([HAVE_POSIX_SPAWN_FILE_ACTIONS_ADDCHDIR_NP])
AC_SUBST([HAVE_POSIX_SPAWNATTR_SETFLAGS])
AC_CHECK_DECLS([POSIX_SPAWN_SETSID], [], [], [[
#include <spawn.h>
]])
AC_SUBST([HAVE_DECL_POSIX_SPAWN_SETSID])
dnl Check for glib. This differs from other library checks in that
dnl Emacs need not link to glib unless some other library is already
dnl linking to glib. Although glib provides no facilities that Emacs
dnl needs for its own purposes, when glib is present Emacs needs to
dnl use primitives like g_main_context_query to avoid clashing with
dnl glib at a low level.
dnl
dnl Check this late, since it depends on $GTK_CFLAGS etc.
XGSELOBJ=
AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
[OLDCFLAGS="$CFLAGS"
OLDLIBS="$LIBS"
CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <glib.h>
]],
[[g_print ("Hello world");]])],
[emacs_cv_links_glib=yes],
[emacs_cv_links_glib=no])
CFLAGS="$OLDCFLAGS"
LIBS="$OLDLIBS"])
if test "${emacs_cv_links_glib}" = "yes"; then
AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
if test "$HAVE_NS" = no;then
XGSELOBJ=xgselect.o
fi
fi
AC_SUBST(XGSELOBJ)
dnl Adapted from Haible's version.
AC_CACHE_CHECK([for nl_langinfo and CODESET], [emacs_cv_langinfo_codeset],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
[[char *cs = nl_langinfo(CODESET);]])],
[emacs_cv_langinfo_codeset=yes],
[emacs_cv_langinfo_codeset=no])
])
if test "$emacs_cv_langinfo_codeset" = yes; then
AC_DEFINE([HAVE_LANGINFO_CODESET], 1,
[Define if you have <langinfo.h> and nl_langinfo (CODESET).])
AC_CACHE_CHECK([for nl_langinfo and _NL_PAPER_WIDTH],
[emacs_cv_langinfo__nl_paper_width],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
[[char *cs = nl_langinfo (_NL_PAPER_WIDTH);]])],
[emacs_cv_langinfo__nl_paper_width=yes],
[emacs_cv_langinfo__nl_paper_width=no])
])
if test "$emacs_cv_langinfo__nl_paper_width" = yes; then
AC_DEFINE([HAVE_LANGINFO__NL_PAPER_WIDTH], 1,
[Define if you have <langinfo.h> and nl_langinfo (_NL_PAPER_WIDTH).])
fi
fi
AC_TYPE_MBSTATE_T
dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
dnl how the tty code is related to POSIX and/or other versions of termios.
dnl The following looks like a useful start.
dnl
dnl AC_SYS_POSIX_TERMIOS
dnl if test $ac_cv_sys_posix_termios = yes; then
dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
dnl and macros for terminal control.])
dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
dnl fi
dnl Turned on June 1996 supposing nobody will mind it.
dnl MinGW emulates passwd database, so this feature doesn't make sense there.
if test "${opsys}" != "mingw32"; then
AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
in the full name stands for the login id.])
fi
dnl Everybody supports this, except MS.
dnl Seems like the kind of thing we should be testing for, though.
## Note: PTYs are broken on darwin <6. Use at your own risk.
if test "${opsys}" != "mingw32"; then
AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
fi
dnl Everybody supports this, except MS-DOS.
dnl Seems like the kind of thing we should be testing for, though.
AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4.2-compatible sockets.])
AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
a null file, or a data sink.])
if test "${opsys}" = "mingw32"; then
AC_DEFINE(NULL_DEVICE, ["NUL:"])
else
AC_DEFINE(NULL_DEVICE, ["/dev/null"])
fi
if test "${opsys}" = "mingw32"; then
SEPCHAR=';'
else
SEPCHAR=':'
fi
AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
dnl This is for MinGW, and is used in test/Makefile.in.
dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
dnl decides that a command-line argument to be passed to a MinGW program
dnl is a PATH-style list of directories. But that heuristics plays it
dnl safe, and only does the replacement when it is _absolutely_ sure it
dnl sees a colon-separated list of file names; e.g. ":." is left alone,
dnl which breaks in-tree builds. So we do this manually instead.
dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
dnl be computed as ':' in MSYS Bash.
AC_SUBST(SEPCHAR)
dnl Everybody supports this, except MS-DOS.
AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
AC_DEFINE(DIRECTORY_SEP, ['/'],
[Character that separates directories in a file name.])
if test "${opsys}" = "mingw32"; then
AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
[Returns true if character is a device separator.])
AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
[Returns true if character is a directory separator.])
AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
[Returns true if character is any form of separator.])
else
AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
[Returns true if character is a device separator.])
AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
[Returns true if character is a directory separator.])
AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
[Returns true if character is any form of separator.])
fi
if test "$USE_X_TOOLKIT" != "none"; then
have_editres=yes
case $opsys in
hpux*)
dnl Assar Westerlund <assar@sics.se> says this is necessary
dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
have_editres=no
;;
esac
if test "$have_editres" != no && test ! -z "$LIBXMU"; then
OLDLIBS="$LIBS"
dnl See libXmu.a check above.
if test x$HAVE_X11XTR6 = xyes; then
LIBS="-lXt -lSM -lICE $LIBXMU"
else
OTHERLIBS="-lXt -$LIBXMU"
fi
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <X11/Intrinsic.h>
#include <X11/Xmu/Editres.h>]],
[[_XEditResCheckMessages (0, 0, 0, 0);]])],
[AC_DEFINE([X_TOOLKIT_EDITRES], 1,
[Define to 1 if we should use XEditRes.])])
LIBS=$OLDLIBS
fi
fi
case $opsys in
solaris | unixware )
dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
dnl instead, there's a system variable _sys_nsig. Unfortunately, we
dnl need the constant to dimension an array. So wire in the appropriate
dnl value here.
AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
;;
esac
emacs_broken_SIGIO=no
case $opsys in
dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
hpux* | nacl | solaris | unixware )
emacs_broken_SIGIO=yes
;;
aix4-2)
dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
dnl the way this system works, libc functions that return malloced
dnl memory use the libc malloc implementation. Calling xfree or
dnl xrealloc on the results of such functions results in a crash.
dnl
dnl One solution for this could be to define SYSTEM_MALLOC in configure,
dnl but that does not currently work on this system.
dnl
dnl It is possible to completely override the malloc implementation on
dnl AIX, but that involves putting the malloc functions in a shared
dnl library and setting the MALLOCTYPE environment variable to point to
dnl that shared library.
dnl
dnl Emacs currently calls xrealloc on the results of get_current_dir name,
dnl to avoid a crash just use the Emacs implementation for that function.
dnl
dnl FIXME We could change the AC_CHECK_FUNCS call near the start
dnl of this file, so that we do not check for get_current_dir_name
dnl on AIX. But that might be fragile if something else ends
dnl up testing for get_current_dir_name as a dependency.
AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
get_current_dir_name should not be used.])
;;
freebsd)
dnl Circumvent a bug in FreeBSD. In the following sequence of
dnl writes/reads on a PTY, read(2) returns bogus data:
dnl
dnl write(2) 1022 bytes
dnl write(2) 954 bytes, get EAGAIN
dnl read(2) 1024 bytes in process_read_output
dnl read(2) 11 bytes in process_read_output
dnl
dnl That is, read(2) returns more bytes than have ever been written
dnl successfully. The 1033 bytes read are the 1022 bytes written
dnl successfully after processing (for example with CRs added if the
dnl terminal is set up that way which it is here). The same bytes will
dnl be seen again in a later read(2), without the CRs.
AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
work around an issue when reading from a PTY.])
;;
esac
case $opsys in
gnu-* | solaris )
dnl FIXME Can't we test if this exists (eg /proc/$$)?
AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
;;
esac
case $opsys in
darwin | dragonfly | freebsd | netbsd | openbsd )
AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
close a pty to make it a controlling terminal (it is already a
controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
;;
esac
dnl FIXME Surely we can test for this rather than hard-code it.
case $opsys in
netbsd | openbsd) sound_device="/dev/audio" ;;
*) sound_device="/dev/dsp" ;;
esac
dnl Used in sound.c
AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
[Name of the default sound device.])
dnl Emacs can read input using SIGIO and buffering characters itself,
dnl or using CBREAK mode and making C-g cause SIGINT.
dnl The choice is controlled by the variable interrupt_input.
dnl
dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
dnl
dnl Emacs uses the presence of the USABLE_SIGIO macro
dnl to indicate whether or not signal-driven I/O is possible. It uses
dnl INTERRUPT_INPUT to decide whether to use it by default.
dnl
dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
dnl CBREAK mode has two disadvantages
dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
dnl I hear that in system V this problem does not exist.
dnl 2) Control-G causes output to be discarded.
dnl I do not know whether this can be fixed in system V.
dnl
dnl Another method of doing input is planned but not implemented.
dnl It would have Emacs fork off a separate process
dnl to read the input and send it to the true Emacs process
dnl through a pipe.
case $opsys in
darwin | gnu-linux | gnu-kfreebsd )
AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
;;
esac
dnl If the system's imake configuration file defines 'NeedWidePrototypes'
dnl as 'NO', we must define NARROWPROTO manually. Such a define is
dnl generated in the Makefile generated by 'xmkmf'. If we don't define
dnl NARROWPROTO, we will see the wrong function prototypes for X functions
dnl taking float or double parameters.
case $opsys in
cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
file defines 'NeedWidePrototypes' as 'NO'.])
;;
esac
dnl Used in process.c, this must be a loop, even if it only runs once.
AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
dnl trying suffixes 0-16.
AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
first PTY, if PTYs are supported.])
AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
end of a PTY, if non-standard.])
AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
end of a PTY, if non-standard.])
case $opsys in
aix4-2 )
AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
dnl You allocate a pty by opening /dev/ptc to get the master side.
dnl To get the name of the slave side, you just ttyname() the master side.
AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
;;
cygwin )
AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
dnl multi-line AC_DEFINEs are hard. :(
AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
AC_DEFINE(PTY_NAME_SPRINTF, [])
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
;;
gnu | qnxnto )
AC_DEFINE(FIRST_PTY_LETTER, ['p'])
;;
gnu-linux | gnu-kfreebsd | dragonfly | freebsd | openbsd | netbsd | darwin | nacl )
dnl if HAVE_GRANTPT
if test "x$ac_cv_func_grantpt" = xyes; then
AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
dnl to prevent sigchld_handler from intercepting the child's death.
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
dnl if HAVE_POSIX_OPENPT
if test "x$ac_cv_func_posix_openpt" = xyes; then
AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
AC_DEFINE(PTY_NAME_SPRINTF, [])
dnl if HAVE_GETPT
elif test "x$ac_cv_func_getpt" = xyes; then
AC_DEFINE(PTY_OPEN, [fd = getpt ()])
AC_DEFINE(PTY_NAME_SPRINTF, [])
else
AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
fi
else
AC_DEFINE(FIRST_PTY_LETTER, ['p'])
fi
;;
hpux*)
AC_DEFINE(FIRST_PTY_LETTER, ['p'])
AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
;;
solaris )
dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
dnl from intercepting that death. If any child but grantpt's should die
dnl within, it should be caught after sigrelse(2).
AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
;;
unixware )
dnl Comments are as per solaris.
AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
;;
esac
case $opsys in
solaris | unixware )
dnl This change means that we don't loop through allocate_pty too
dnl many times in the (rare) event of a failure.
AC_DEFINE(FIRST_PTY_LETTER, ['z'])
AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
dnl Push various streams modules onto a PTY channel. Used in process.c.
AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (std_in, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (std_in, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (std_in, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
;;
esac
AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
"typing" a signal character on the pty.])
case $opsys in
dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
;;
dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
gnu-linux | gnu-kfreebsd )
AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
[AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
#include <linux/version.h>
#if LINUX_VERSION_CODE < 0x20400
# error "Linux version too old"
#endif
]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
;;
esac
AH_TEMPLATE(TAB3, [Undocumented.])
case $opsys in
darwin) AC_DEFINE(TAB3, OXTABS) ;;
gnu | dragonfly | freebsd | netbsd | openbsd )
AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
AC_DEFINE(TAB3, OXTABS)
;;
gnu-linux | gnu-kfreebsd )
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
#ifndef __ia64__
# error "not ia64"
#endif
]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
[do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
[Mark a secondary stack, like the register stack on the ia64.]), [])
;;
hpux*)
AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
run_time_remap; for HPUX.])
;;
esac
dnl This won't be used automatically yet. We also need to know, at least,
dnl that the stack is continuous.
AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
registers relevant for conservative garbage collection in the jmp_buf.])
case $opsys in
dnl Not all the architectures are tested, but there are Debian packages
dnl for SCM and/or Guile on them, so the technique must work. See also
dnl comments in alloc.c concerning setjmp and gcc.
dnl Fixme: it's probably safe to just use the GCC conditional below.
gnu-linux | gnu-kfreebsd )
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
#if defined __i386__ || defined __sparc__ || defined __mc68000__ \
|| defined __alpha__ || defined __mips__ || defined __s390__ \
|| defined __arm__ || defined __powerpc__ || defined __amd64__ \
|| defined __ia64__ || defined __sh__
/* ok */
#else
# error "setjmp not known to work on this arch"
#endif
]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
;;
esac
if test x$GCC = xyes; then
dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
AC_DEFINE(GC_SETJMP_WORKS, 1)
else
case $opsys in
aix* | dragonfly | freebsd | netbsd | openbsd | solaris )
AC_DEFINE(GC_SETJMP_WORKS, 1)
;;
esac
fi dnl GCC?
dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <setjmp.h>
#ifdef __MINGW32__
# define _longjmp longjmp
#endif
]],
[[jmp_buf j;
if (! _setjmp (j))
_longjmp (j, 1);]])],
[emacs_cv_func__setjmp=yes],
[emacs_cv_func__setjmp=no])])
if test $emacs_cv_func__setjmp = yes; then
AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
fi
# We need to preserve signal mask to handle C stack overflows.
AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <setjmp.h>
]],
[[sigjmp_buf j;
if (! sigsetjmp (j, 1))
siglongjmp (j, 1);]])],
[emacs_cv_func_sigsetjmp=yes],
[emacs_cv_func_sigsetjmp=no])])
if test $emacs_cv_func_sigsetjmp = yes; then
AC_DEFINE([HAVE_SIGSETJMP], 1,
[Define to 1 if sigsetjmp and siglongjmp work.])
fi
case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
yes,yes,* | *,*,mingw32)
AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
[Define to 1 if C stack overflow can be handled in some cases.]);;
esac
case $opsys in
solaris | unixware )
dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
dnl and this is all we need.
AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
;;
esac
case $opsys in
hpux* | solaris )
dnl Used in xfaces.c.
AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
some systems, where it requires time.h.])
;;
esac
dnl Define symbols to identify the version of Unix this is.
dnl Define all the symbols that apply correctly.
AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
case $opsys in
aix4-2)
AC_DEFINE(USG, [])
dnl This symbol should be defined on AIX Version 3 ???????
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
#ifndef _AIX
# error "_AIX not defined"
#endif
]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
;;
cygwin)
AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
;;
darwin)
dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
dnl distinguish macOS from pure Darwin.
AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
;;
gnu-linux | gnu-kfreebsd )
AC_DEFINE(USG, [])
AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
;;
hpux*)
AC_DEFINE(USG, [])
AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
;;
mingw32)
AC_DEFINE(DOS_NT, [])
AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
if test "x$ac_enable_checking" != "x" ; then
AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
fi
;;
solaris)
AC_DEFINE(USG, [])
AC_DEFINE(USG5_4, [])
AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
;;
unixware)
AC_DEFINE(USG, [])
AC_DEFINE(USG5_4, [])
;;
esac
AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
[case $opsys in
aix4-2 | nacl)
dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
emacs_cv_usable_FIONREAD=no
;;
mingw32)
emacs_cv_usable_FIONREAD=yes
;;
*)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/types.h>
#include <sys/ioctl.h>
#ifdef USG5_4
# include <sys/filio.h>
#endif
]],
[[int foo = ioctl (0, FIONREAD, &foo);]])],
[emacs_cv_usable_FIONREAD=yes],
[emacs_cv_usable_FIONREAD=no])
;;
esac])
if test $emacs_cv_usable_FIONREAD = yes; then
AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
if test $emacs_broken_SIGIO = no; then
AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <fcntl.h>
#include <signal.h>
]],
[[int foo = SIGIO | F_SETFL | FASYNC;]])],
[emacs_cv_usable_SIGIO=yes],
[emacs_cv_usable_SIGIO=no])],
[emacs_cv_usable_SIGIO=yes],
[emacs_cv_usable_SIGIO=no])
if test $emacs_cv_usable_SIGIO = yes; then
AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
fi
fi
fi
case $opsys in
hpux11)
dnl It works to open the pty's tty in the parent (Emacs), then
dnl close and reopen it in the child.
AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
works to open a pty's tty in the parent process, then close and
reopen it in the child.])
;;
solaris)
AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
on Solaris.])
;;
esac
# Set up the CFLAGS for real compilation, so we can substitute it.
CFLAGS="$REAL_CFLAGS"
CPPFLAGS="$REAL_CPPFLAGS"
LIBS="$REAL_LIBS"
## Hack to detect a buggy GCC version.
if test "$GCC" = yes && \
$CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
case $CFLAGS in
*-fno-optimize-sibling-calls*) ;;
*-O@<:@23@:>@*)
AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
esac
fi
version=$PACKAGE_VERSION
copyright="Copyright (C) 2021 Free Software Foundation, Inc."
AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
[Short copyright string for this version of Emacs.])
AC_SUBST(copyright)
### Specify what sort of things we'll be editing into Makefile and config.h.
### Use configuration here uncanonicalized to avoid exceeding size limits.
AC_SUBST(version)
AC_SUBST(configuration)
## Unused?
AC_SUBST(canonical)
AC_SUBST(srcdir)
AC_SUBST(prefix)
AC_SUBST(exec_prefix)
AC_SUBST(bindir)
AC_SUBST(datadir)
AC_SUBST(sharedstatedir)
AC_SUBST(libexecdir)
AC_SUBST(mandir)
AC_SUBST(infodir)
AC_SUBST(lispdirrel)
AC_SUBST(lispdir)
AC_SUBST(standardlisppath)
AC_SUBST(locallisppath)
AC_SUBST(lisppath)
AC_SUBST(x_default_search_path)
AC_SUBST(etcdir)
AC_SUBST(archlibdir)
AC_SUBST(etcdocdir)
AC_SUBST(bitmapdir)
AC_SUBST(gamedir)
AC_SUBST(gameuser)
AC_SUBST(gamegroup)
## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
## end of LIBX_BASE, but nothing ever set it.
AC_SUBST(LD_SWITCH_X_SITE)
AC_SUBST(C_SWITCH_X_SITE)
AC_SUBST(GNUSTEP_CFLAGS)
AC_SUBST(CFLAGS)
## Used in lwlib/Makefile.in.
AC_SUBST(X_TOOLKIT_TYPE)
AC_SUBST(ns_appdir)
AC_SUBST(ns_appbindir)
AC_SUBST(ns_applibexecdir)
AC_SUBST(ns_applibdir)
AC_SUBST(ns_appresdir)
AC_SUBST(ns_appsrc)
AC_SUBST(GNU_OBJC_CFLAGS)
AC_SUBST(OTHER_FILES)
if test -n "${term_header}"; then
AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
[Define to the header for the built-in window system.])
fi
AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
[Define to the canonical Emacs configuration name.])
AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
[Define to the options passed to configure.])
XMENU_OBJ=
XOBJ=
FONT_OBJ=
if test "${HAVE_X_WINDOWS}" = "yes" ; then
AC_DEFINE(HAVE_X_WINDOWS, 1,
[Define to 1 if you want to use the X window system.])
XMENU_OBJ=xmenu.o
XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
FONT_OBJ=xfont.o
if test "$HAVE_CAIRO" = "yes"; then
FONT_OBJ="$FONT_OBJ ftfont.o ftcrfont.o"
elif test "$HAVE_XFT" = "yes"; then
FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o"
elif test "$HAVE_FREETYPE" = "yes"; then
FONT_OBJ="$FONT_OBJ ftfont.o"
fi
fi
if test "${HAVE_HARFBUZZ}" = "yes" ; then
FONT_OBJ="$FONT_OBJ hbfont.o"
fi
AC_SUBST(FONT_OBJ)
AC_SUBST(XMENU_OBJ)
AC_SUBST(XOBJ)
AC_SUBST(FONT_OBJ)
WIDGET_OBJ=
MOTIF_LIBW=
if test "${USE_X_TOOLKIT}" != "none" ; then
WIDGET_OBJ=widget.o
AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
if test "${USE_X_TOOLKIT}" = "LUCID"; then
AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
MOTIF_LIBW=-lXm
case "$opsys" in
gnu-linux)
## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
MOTIF_LIBW="$MOTIF_LIBW -lXpm"
;;
unixware)
## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
MOTIF_LIBW="MOTIF_LIBW -lXimp"
;;
aix4-2)
## olson@mcs.anl.gov says -li18n is needed by -lXm.
MOTIF_LIBW="$MOTIF_LIBW -li18n"
;;
esac
MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
fi
fi
AC_SUBST(WIDGET_OBJ)
TOOLKIT_LIBW=
case "$USE_X_TOOLKIT" in
MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
esac
if test "$HAVE_XWIDGETS" = "yes"; then
TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
fi
AC_SUBST(TOOLKIT_LIBW)
if test "${opsys}" != "mingw32"; then
if test "$USE_X_TOOLKIT" = "none"; then
LIBXT_OTHER="\$(LIBXSM)"
else
LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
fi
fi
AC_SUBST(LIBXT_OTHER)
if test "${HAVE_X11}" = "yes" ; then
AC_DEFINE(HAVE_X11, 1,
[Define to 1 if you want to use version 11 of X windows.])
LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
else
LIBX_OTHER=
fi
AC_SUBST(LIBX_OTHER)
HAVE_OLDXMENU=no
if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
LIBXMENU=
elif test "$USE_X_TOOLKIT" = none; then
HAVE_OLDXMENU=yes
LIBXMENU='$(oldXMenudir)/libXMenu11.a'
AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
else
LIBXMENU='$(lwlibdir)/liblw.a'
AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
fi
AC_SUBST(LIBXMENU)
AC_CACHE_CHECK([for struct alignment],
[emacs_cv_struct_alignment],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <stddef.h>
struct s { char c; } __attribute__ ((aligned (8)));
struct t { char c; struct s s; };
char verify[offsetof (struct t, s) == 8 ? 1 : -1];
]])],
[emacs_cv_struct_alignment=yes],
[emacs_cv_struct_alignment=no])])
if test "$emacs_cv_struct_alignment" = yes; then
AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
[Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
structure to an N-byte boundary.])
fi
AC_C_TYPEOF
AC_CACHE_CHECK([for statement expressions],
[emacs_cv_statement_expressions],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[return ({ int x = 5; x-x; });]])],
[emacs_cv_statement_expressions=yes],
[emacs_cv_statement_expressions=no])])
if test "$emacs_cv_statement_expressions" = yes; then
AC_DEFINE([HAVE_STATEMENT_EXPRESSIONS], 1,
[Define to 1 if statement expressions work.])
fi
if test "${GNU_MALLOC}" = "yes" ; then
AC_DEFINE(GNU_MALLOC, 1,
[Define to 1 if you want to use the GNU memory allocator.])
fi
RALLOC_OBJ=
if test "${REL_ALLOC}" = "yes" ; then
AC_DEFINE(REL_ALLOC, 1,
[Define REL_ALLOC if you want to use the relocating allocator for
buffer space.])
test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
fi
AC_SUBST(RALLOC_OBJ)
if test "$opsys" = "cygwin"; then
CYGWIN_OBJ="cygw32.o"
## Cygwin differs because of its unexec().
PRE_ALLOC_OBJ=
POST_ALLOC_OBJ=lastfile.o
elif test "$opsys" = "mingw32"; then
CYGWIN_OBJ=
PRE_ALLOC_OBJ=
POST_ALLOC_OBJ=lastfile.o
else
CYGWIN_OBJ=
PRE_ALLOC_OBJ=lastfile.o
POST_ALLOC_OBJ=
fi
AC_SUBST(CYGWIN_OBJ)
AC_SUBST(PRE_ALLOC_OBJ)
AC_SUBST(POST_ALLOC_OBJ)
dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
dnl verbatim defined above. The tricky name is apropos, as this hack
dnl makes Fortify go sour!
AH_VERBATIM([FORTIFY_SOUR],
[/* Without the following workaround, Emacs runs slowly on OS X 10.8.
The workaround disables some useful run-time checking, so it
should be conditional to the platforms with the performance bug.
Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
#if defined __APPLE__ && defined __GNUC__
# ifndef _DONT_USE_CTYPE_INLINE_
# define _DONT_USE_CTYPE_INLINE_
# endif
# ifndef _FORTIFY_SOURCE
# define _FORTIFY_SOURCE 0
# endif
#endif
])
# If user asks to omit features, disable optional features that gnulib
# might otherwise enable.
if test "$with_features" = no && test "$enable_acl" != yes; then
enable_acl=no
fi
# Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
# it temporarily reverts them to their pre-pkg-config values,
# because gnulib needs to work with both src (which uses the
# pkg-config stuff) and lib-src (which does not). For example, gnulib
# may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
# and it therefore needs to run in an environment where LIBS does not
# already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
# for some package unrelated to lib-src.
SAVE_CFLAGS=$CFLAGS
SAVE_LIBS=$LIBS
CFLAGS=$pre_PKG_CONFIG_CFLAGS
LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
gl_ASSERT_NO_GNULIB_POSIXCHECK
gl_ASSERT_NO_GNULIB_TESTS
gl_EEMALLOC
gl_INIT
CFLAGS=$SAVE_CFLAGS
LIBS=$SAVE_LIBS
# timer_getoverrun needs the same library as timer_settime
OLD_LIBS=$LIBS
LIBS="$LIB_TIMER_TIME $LIBS"
AC_CHECK_FUNCS(timer_getoverrun)
LIBS=$OLD_LIBS
if test "${opsys}" = "mingw32"; then
CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
# Remove unneeded switches from the value of CC that goes to Makefiles
CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
fi
case "$opsys" in
aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
darwin)
if test "$HAVE_NS" = "yes"; then
libs_nsgui="-framework AppKit"
if test "$NS_IMPL_COCOA" = "yes"; then
libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon \
-framework IOSurface -framework QuartzCore"
fi
else
libs_nsgui=
fi
LD_SWITCH_SYSTEM_TEMACS=$libs_nsgui
## The -headerpad option tells ld (see man page) to leave room at the
## end of the header for adding load commands. Needed for dumping.
## 0x1000 is enough for roughly 52 load commands on the x86_64
## architecture (where they are 78 bytes each). The actual number of
## load commands added is not consistent but normally ranges from
## about 14 to about 34. Setting it high gets us plenty of slop and
## only costs about 1.5K of wasted binary space.
headerpad_extra=1000
if test "$with_unexec" = yes; then
LD_SWITCH_SYSTEM_TEMACS="-fno-pie $LD_SWITCH_SYSTEM_TEMACS -Xlinker -headerpad -Xlinker $headerpad_extra"
fi
## This is here because src/Makefile.in did some extra fiddling around
## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
## LD_SWITCH_SYSTEM_TEMACS instead,
test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
;;
## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
## find X at run-time.
## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
## had different values in configure (in ac_link) and src/Makefile.in.
## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
mingw32)
## Is it any better under MinGW64 to relocate emacs into higher addresses?
case "$canonical" in
x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
esac
## If they want unexec, disable Windows ASLR for the Emacs binary
if test "$with_dumping" = "unexec"; then
case "$canonical" in
x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -Wl,-disable-dynamicbase -Wl,-disable-high-entropy-va -Wl,-default-image-base-low" ;;
*) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -Wl,-disable-dynamicbase" ;;
esac
fi
;;
*) LD_SWITCH_SYSTEM_TEMACS= ;;
esac
# -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
# Ubuntu, and other systems with "hardened" GCC configurations for
# some reason (Bug#18784). We don't know why this works, but not
# segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
# when trying the option, otherwise clang keeps warning that it does
# not understand it, and pre-4.6 GCC has a similar problem
# (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
# spelling used by GCC 6.1.0 and later (Bug#24682).
AC_CACHE_CHECK(
[for $CC option to disable position independent executables],
[emacs_cv_prog_cc_no_pie],
[if test $with_unexec = no; then
emacs_cv_prog_cc_no_pie='not needed'
else
emacs_save_c_werror_flag=$ac_c_werror_flag
emacs_save_LDFLAGS=$LDFLAGS
ac_c_werror_flag=yes
for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
test $emacs_cv_prog_cc_no_pie = no && break
LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
done
ac_c_werror_flag=$emacs_save_c_werror_flag
LDFLAGS=$emacs_save_LDFLAGS
fi])
case $emacs_cv_prog_cc_no_pie in
-*)
LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
;;
esac
if test x$ac_enable_profiling != x ; then
case $opsys in
*freebsd | gnu-linux) ;;
*) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
esac
fi
LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
## Common for all window systems
if test "$window_system" != "none"; then
AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
fi
AC_SUBST(WINDOW_SYSTEM_OBJ)
AH_TOP([/* GNU Emacs site configuration template file.
Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2021
Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
/* No code in Emacs #includes config.h twice, but some bits of code
intended to work with other packages as well (like gmalloc.c)
think they can include it as many times as they like. */
#ifndef EMACS_CONFIG_H
#define EMACS_CONFIG_H
])dnl
AH_BOTTOM([#include <conf_post.h>
#endif /* EMACS_CONFIG_H */
/*
Local Variables:
mode: c
End:
*/
])dnl
#### Report on what we decided to do.
#### Report GTK as a toolkit, even if it doesn't use Xt.
#### It makes printing result more understandable as using GTK sets
#### toolkit_scroll_bars to yes by default.
if test "${HAVE_GTK}" = "yes"; then
USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
fi
if test $USE_ACL -ne 0; then
ACL_SUMMARY="yes $LIB_ACL"
else
ACL_SUMMARY=no
fi
if test -z "$GMP_H"; then
HAVE_GMP=yes
else
HAVE_GMP=no
fi
emacs_standard_dirs='Standard dirs'
AS_ECHO(["
Configured for '${canonical}'.
Where should the build process find the source code? ${srcdir}
What compiler should emacs be built with? ${CC} ${CFLAGS}
Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
What window system should Emacs use? ${window_system}
What toolkit should Emacs use? ${USE_X_TOOLKIT}
Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
#### Please respect alphabetical ordering when making additions.
optsep=
emacs_config_features=
for opt in ACL CAIRO DBUS FREETYPE GCONF GIF GLIB GMP GNUTLS GPM GSETTINGS \
HARFBUZZ IMAGEMAGICK JPEG JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 \
M17N_FLT MODULES NATIVE_COMP NOTIFY NS OLDXMENU PDUMPER PNG RSVG SECCOMP \
SOUND THREADS TIFF TOOLKIT_SCROLL_BARS \
UNEXEC WEBP X11 XAW3D XDBE XFT XIM XPM XWIDGETS X_TOOLKIT \
ZLIB; do
case $opt in
PDUMPER) val=${with_pdumper} ;;
UNEXEC) val=${with_unexec} ;;
GLIB) val=${emacs_cv_links_glib} ;;
NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
THREADS) val=${threads_enabled} ;;
*) eval val=\${HAVE_$opt} ;;
esac
case x$val in
xno|xnone|x) continue ;;
esac
case $opt in
X_TOOLKIT)
case $val in
GTK*|LUCID|MOTIF) opt=$val ;;
*) continue ;;
esac
;;
NOTIFY)
case $val in
*lkqueue*) opt="$opt LIBKQUEUE" ;;
*kqueue*) opt="$opt KQUEUE" ;;
*inotify*) opt="$opt INOTIFY" ;;
*gfile*) opt="$opt GFILENOTIFY" ;;
*w32*) opt="$opt W32NOTIFY" ;;
esac
;;
esac
AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
optsep=' '
done
AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
[Summary of some of the main features enabled by configure.])
AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
Does Emacs use -lXpm? ${HAVE_XPM}
Does Emacs use -ljpeg? ${HAVE_JPEG}
Does Emacs use -ltiff? ${HAVE_TIFF}
Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
Does Emacs use -lrsvg-2? ${HAVE_RSVG}
Does Emacs use -lwebp? ${HAVE_WEBP}
Does Emacs use cairo? ${HAVE_CAIRO}
Does Emacs use -llcms2? ${HAVE_LCMS2}
Does Emacs use imagemagick? ${HAVE_IMAGEMAGICK}
Does Emacs use native APIs for images? ${NATIVE_IMAGE_API}
Does Emacs support sound? ${HAVE_SOUND}
Does Emacs use -lgpm? ${HAVE_GPM}
Does Emacs use -ldbus? ${HAVE_DBUS}
Does Emacs use -lgconf? ${HAVE_GCONF}
Does Emacs use GSettings? ${HAVE_GSETTINGS}
Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
Does Emacs use access control lists? ${ACL_SUMMARY}
Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
Does Emacs use -lgnutls? ${HAVE_GNUTLS}
Does Emacs use -lxml2? ${HAVE_LIBXML2}
Does Emacs use -lfreetype? ${HAVE_FREETYPE}
Does Emacs use HarfBuzz? ${HAVE_HARFBUZZ}
Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
Does Emacs use -lotf? ${HAVE_LIBOTF}
Does Emacs use -lxft? ${HAVE_XFT}
Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
Does Emacs use -ljansson? ${HAVE_JSON}
Does Emacs use the GMP library? ${HAVE_GMP}
Does Emacs directly use zlib? ${HAVE_ZLIB}
Does Emacs have dynamic modules support? ${HAVE_MODULES}
Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
Does Emacs support Xwidgets? ${HAVE_XWIDGETS}
Does Emacs have threading support in lisp? ${threads_enabled}
Does Emacs support the portable dumper? ${with_pdumper}
Does Emacs support legacy unexec dumping? ${with_unexec}
Which dumping strategy does Emacs use? ${with_dumping}
Does Emacs have native lisp compiler? ${HAVE_NATIVE_COMP}
"])
if test -n "${EMACSDATA}"; then
AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
fi
if test -n "${EMACSDOC}"; then
AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
fi
echo
if test "$HAVE_NS" = "yes"; then
echo
AS_ECHO(["Run '${MAKE-make}' to build Emacs, then run 'src/emacs' to test it.
Run '${MAKE-make} install' in order to build an application bundle.
The application will go to nextstep/Emacs.app and can be run or moved
from there."])
if test "$EN_NS_SELF_CONTAINED" = "yes"; then
echo "The application will be fully self-contained."
else
AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
You may need to run \"${MAKE-make} install\" with sudo. The application will fail
to run if these resources are not installed."])
fi
echo
fi
case $opsys,$emacs_uname_r in
cygwin,1.5.*)
AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
echo
;;
cygwin,3.0.[[0-7]]'('* | cygwin,3.1.[[0-2]]'('*)
AC_DEFINE([HAVE_CYGWIN_O_PATH_BUG], 1,
[Define to 1 if opening a FIFO, socket, or symlink with O_PATH is buggy.]);;
esac
# Remove any trailing slashes in these variables.
case $prefix in
*/) prefix=`AS_DIRNAME(["$prefix."])`;;
esac
case $exec_prefix in
*/) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
esac
if test "$HAVE_NS" = "yes"; then
if test "$NS_IMPL_GNUSTEP" = yes; then
AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
ns_check_file=Resources/Info-gnustep.plist
else
AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
ns_check_file=Contents/Info.plist
fi
AC_SUBST(ns_check_file)
fi
AC_CONFIG_FILES([Makefile lib/gnulib.mk])
dnl config.status treats $srcdir specially, so I think this is ok...
AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
m4_define([subdir_makefiles],
[lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile])
SUBDIR_MAKEFILES="subdir_makefiles"
AC_CONFIG_FILES(subdir_makefiles)
dnl The test/ directory is missing if './make-dist --no-tests' was used.
opt_makefile=test/Makefile
if test -f "$srcdir/$opt_makefile.in"; then
SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
dnl Again, it's best not to use a variable. Though you can add
dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
AC_CONFIG_FILES([test/Makefile])
fi
dnl The admin/ directory used to be excluded from tarfiles.
if test -d $srcdir/admin; then
SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
AC_CONFIG_FILES([admin/charsets/Makefile])
AC_CONFIG_FILES([admin/unidata/Makefile])
AC_CONFIG_FILES([admin/grammars/Makefile])
fi dnl -d admin
SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
AC_SUBST(SUBDIR_MAKEFILES_IN)
dnl You might wonder (I did) why epaths.h is generated by running make,
dnl rather than just letting configure generate it from epaths.in.
dnl One reason is that the various paths are not fully expanded (see above);
dnl e.g., gamedir='${localstatedir}/games/emacs'.
dnl Secondly, the GNU Coding standards require that one should be able
dnl to run 'make prefix=/some/where/else' and override the values set
dnl by configure. This also explains the 'move-if-change' test and
dnl the use of force in the 'epaths-force' rule in Makefile.in.
AC_CONFIG_COMMANDS([src/epaths.h], [
if test "${opsys}" = "mingw32"; then
${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
elif test "$HAVE_NS" = "yes" && test "$EN_NS_SELF_CONTAINED" = "yes"; then
${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-ns-self-contained
else
${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys" HAVE_NS="$HAVE_NS"
EN_NS_SELF_CONTAINED="$EN_NS_SELF_CONTAINED"])
dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
dnl or a symlink?
AC_CONFIG_COMMANDS([src/.gdbinit], [
if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
fi
])
dnl Perhaps this would be better named doc-emacs-emacsver.texi?
dnl See comments for etc-refcards-emacsver.tex.
dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
dnl it is not quite the same. But we are generating in $srcdir.
AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
])
dnl If we give this the more natural name, etc/refcards/emacsver.texi,
dnl then a directory etc/refcards is created in the build directory,
dnl which is probably harmless, but confusing (in out-of-tree builds).
dnl (If we were to generate etc/refcards/Makefile, this might change.)
dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
])
if test $AUTO_DEPEND = yes; then
for dir in $AUTODEPEND_PARENTS; do
AS_MKDIR_P([$dir/deps])
done
fi
if $gl_gnulib_enabled_dynarray || $gl_gnulib_enabled_scratch_buffer; then
AS_MKDIR_P([lib/malloc])
if test $AUTO_DEPEND = yes; then
AS_MKDIR_P([lib/deps/malloc])
fi
fi
AC_OUTPUT
if test ! "$with_mailutils"; then
if test "$with_pop" = yes; then
AC_MSG_WARN([This configuration installs a 'movemail' program
that retrieves POP3 email via only insecure channels.
To omit insecure POP3, you can use '$0 --without-pop'.])
elif test "$with_pop" = no-by-default; then
AC_MSG_WARN([This configuration installs a 'movemail' program
that does not retrieve POP3 email. By default, Emacs 25 and earlier
installed a 'movemail' program that retrieved POP3 email via only
insecure channels, a practice that is no longer recommended but that
you can continue to support by using '$0 --with-pop'.])
fi
case $opsys in
mingw32)
# Don't suggest GNU Mailutils, as it hasn't been ported.
;;
*)
emacs_fix_movemail="use '$0 --with-mailutils'"
case `(movemail --version) 2>/dev/null` in
*Mailutils*) ;;
*) emacs_fix_movemail="install GNU Mailutils
<https://mailutils.org> and $emacs_fix_movemail";;
esac
AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
esac
fi
if test "${HAVE_XFT}" = yes; then
AC_MSG_WARN([This configuration uses libXft, which has a number of
font rendering issues, and is being considered for removal in the
next release of Emacs. Please consider using Cairo graphics +
HarfBuzz text shaping instead (they are auto-detected if the
relevant development headers are installed).])
fi
if test "${HAVE_CAIRO}" = "yes" && test "${HAVE_HARFBUZZ}" = no; then
AC_MSG_WARN([This configuration uses the Cairo graphics library,
but not the HarfBuzz font shaping library (minimum version $harfbuzz_required_ver).
We recommend the use of HarfBuzz when using Cairo, please install
appropriate HarfBuzz development packages.])
fi
# Let plain 'make' work.
test "$MAKE" = make || test -f makefile || cat >makefile <<EOF
.POSIX:
MAKE = $MAKE
all:
\$(MAKE) -f Makefile \$?
.DEFAULT:
\$(MAKE) -f Makefile \$<
EOF
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