mirror of
https://git.savannah.gnu.org/git/emacs.git
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24e0f6b1dc
* m4/largefile.m4: New file, so that Emacs does not mess up when
accessing files with large inode numbers in MacOS X 10.5 and later.
* m4/nocrash.m4: New file, to avoid triggering background debugger
and/or create core dumps during 'configure'.
* build-aux/move-if-change: Renamed from move-if-change.
* build-aux/snippet/arg-nonnull.h: Renamed from arg-nonnull.h.
* build-aux/snippet/c++defs.h: Renamed from c++defs.h.
* build-aux/snippet/warn-on-use.h: Renamed from warn-on-use.h.
* build-aux/snippet/_Noreturn.h: New file, for draft C1X _Noreturn.
* .bzrignore: The autogenerated files compile, config.guess,
config.sub, depcomp, install-sh, and missing are now in build-aux.
* Makefile.in (epaths-force, sync-from-gnulib):
move-if-change is now in build-aux.
(GNULIB_TOOL_FLAGS): Avoid threadlib; this is now a prerequisite
of gnulib's pthread_sigmask module, but Emacs doesn't need it.
(mkdir): install-sh is now in build-aux.
* config.bat: c++defs.h is now in build-aux/snippets.
* configure.in: Specify AC_CONFIG_AUX_DIR with build-aux (the
usual parameter).
* lib/gnulib.mk, m4/gl-comp.m4: Regenerate.
* lib/makefile.w32-in (ARG_NONNULL_H): arg-nonnull.h moved
to build-aux/snippet.
* lib/pthread_sigmask.c, lib/stdlib.in.h, m4/extensions.m4:
* m4/getopt.m4, m4/gnulib-common.m4, m4/pthread_sigmask.m4:
Merge from gnuilib. This fixes porting bugs on Cygwin, Irix, and
Solaris, enables MacOS extensions, and enables nocrash during
'configure'.
* make-dist: Adjust to new build-aux and build-aux/snippit dirs.
* admin/notes/copyright: The files compile, config.guess, config.sub,
depcomp, install-sh, missing, and move-if-change are now in the
new build-aux subdirectory. The files arg-nonnull.h, c++defs.h,
and warn-on-use.h are now in build-aux/snippets. New file
build-aux/snippets/_Noreturn.h.
* leim/Makefile.in (install): install-sh is now in build-aux.
* lib-src/Makefile.in ($(DESTDIR)${archlibdir}): install-sh moved
to build-aux.
* msdos/sedlibmk.inp (CONFIG_CLEAN_VPATH_FILES): Adjust to snippet moves
from top level to build-aux/snippet.
* src/Makefile.in (gl-stamp): move-if-change is now in build-aux.
124 lines
4.5 KiB
Plaintext
124 lines
4.5 KiB
Plaintext
# serial 10 -*- Autoconf -*-
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# Enable extensions on systems that normally disable them.
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# Copyright (C) 2003, 2006-2011 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from CVS
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# Autoconf. Perhaps we can remove this once we can assume Autoconf
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# 2.62 or later everywhere, but since CVS Autoconf mutates rapidly
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# enough in this area it's likely we'll need to redefine
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# AC_USE_SYSTEM_EXTENSIONS for quite some time.
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# If autoconf reports a warning
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# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
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# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
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# the fix is
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# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
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# but always AC_REQUIREd,
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# 2) to ensure that for each occurrence of
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# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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# or
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# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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# the corresponding gnulib module description has 'extensions' among
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# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
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# invocation occurs in gl_EARLY, not in gl_INIT.
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# AC_USE_SYSTEM_EXTENSIONS
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# ------------------------
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# Enable extensions on systems that normally disable them,
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# typically due to standards-conformance issues.
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# Remember that #undef in AH_VERBATIM gets replaced with #define by
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# AC_DEFINE. The goal here is to define all known feature-enabling
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# macros, then, if reports of conflicts are made, disable macros that
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# cause problems on some platforms (such as __EXTENSIONS__).
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AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
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[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
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AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
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if test "$MINIX" = yes; then
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AC_DEFINE([_POSIX_SOURCE], [1],
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[Define to 1 if you need to in order for `stat' and other
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things to work.])
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AC_DEFINE([_POSIX_1_SOURCE], [2],
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[Define to 2 if the system does not provide POSIX.1 features
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except with this defined.])
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AC_DEFINE([_MINIX], [1],
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[Define to 1 if on MINIX.])
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fi
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dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500,
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dnl regardless of whether the flags -Ae or _D_HPUX_SOURCE=1 are already
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dnl provided.
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case "$host_os" in
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hpux*)
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AC_DEFINE([_XOPEN_SOURCE], [500],
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[Define to 500 only on HP-UX.])
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;;
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esac
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AH_VERBATIM([__EXTENSIONS__],
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[/* Enable extensions on AIX 3, Interix. */
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#ifndef _ALL_SOURCE
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# undef _ALL_SOURCE
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#endif
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/* Enable general extensions on MacOS X. */
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#ifndef _DARWIN_C_SOURCE
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# undef _DARWIN_C_SOURCE
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#endif
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/* Enable GNU extensions on systems that have them. */
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#ifndef _GNU_SOURCE
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# undef _GNU_SOURCE
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#endif
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/* Enable threading extensions on Solaris. */
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#ifndef _POSIX_PTHREAD_SEMANTICS
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# undef _POSIX_PTHREAD_SEMANTICS
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#endif
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/* Enable extensions on HP NonStop. */
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#ifndef _TANDEM_SOURCE
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# undef _TANDEM_SOURCE
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#endif
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/* Enable general extensions on Solaris. */
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#ifndef __EXTENSIONS__
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# undef __EXTENSIONS__
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#endif
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])
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AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
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[ac_cv_safe_to_define___extensions__],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[
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# define __EXTENSIONS__ 1
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]AC_INCLUDES_DEFAULT])],
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[ac_cv_safe_to_define___extensions__=yes],
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[ac_cv_safe_to_define___extensions__=no])])
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test $ac_cv_safe_to_define___extensions__ = yes &&
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AC_DEFINE([__EXTENSIONS__])
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AC_DEFINE([_ALL_SOURCE])
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AC_DEFINE([_DARWIN_C_SOURCE])
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AC_DEFINE([_GNU_SOURCE])
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AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
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AC_DEFINE([_TANDEM_SOURCE])
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])# AC_USE_SYSTEM_EXTENSIONS
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# gl_USE_SYSTEM_EXTENSIONS
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# ------------------------
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# Enable extensions on systems that normally disable them,
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# typically due to standards-conformance issues.
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AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
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[
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dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS.
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dnl gnulib does not need it. But if it gets required by third-party macros
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dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a
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dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
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dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE,
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dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck.
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AC_REQUIRE([AC_GNU_SOURCE])
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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])
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