mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-30 08:09:04 +00:00
982530518f
This mostly just updates copyright dates of gnulib files. It also updates to the latest version of texinfo.tex.
112 lines
3.8 KiB
Plaintext
112 lines
3.8 KiB
Plaintext
# Configure a replacement for <sys/time.h>.
|
|
# serial 8
|
|
|
|
# Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
|
|
# This file is free software; the Free Software Foundation
|
|
# gives unlimited permission to copy and/or distribute it,
|
|
# with or without modifications, as long as this notice is preserved.
|
|
|
|
# Written by Paul Eggert and Martin Lambers.
|
|
|
|
AC_DEFUN([gl_HEADER_SYS_TIME_H],
|
|
[
|
|
dnl Use AC_REQUIRE here, so that the REPLACE_GETTIMEOFDAY=0 statement
|
|
dnl below is expanded once only, before all REPLACE_GETTIMEOFDAY=1
|
|
dnl statements that occur in other macros.
|
|
AC_REQUIRE([gl_HEADER_SYS_TIME_H_BODY])
|
|
])
|
|
|
|
AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
|
|
[
|
|
AC_REQUIRE([AC_C_RESTRICT])
|
|
AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
|
|
AC_CHECK_HEADERS_ONCE([sys/time.h])
|
|
gl_CHECK_NEXT_HEADERS([sys/time.h])
|
|
|
|
if test $ac_cv_header_sys_time_h != yes; then
|
|
HAVE_SYS_TIME_H=0
|
|
fi
|
|
|
|
dnl On native Windows with MSVC, 'struct timeval' is defined in <winsock2.h>
|
|
dnl only. So include that header in the list.
|
|
gl_PREREQ_SYS_H_WINSOCK2
|
|
AC_CACHE_CHECK([for struct timeval], [gl_cv_sys_struct_timeval],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#if HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#endif
|
|
#include <time.h>
|
|
#if HAVE_WINSOCK2_H
|
|
# include <winsock2.h>
|
|
#endif
|
|
]],
|
|
[[static struct timeval x; x.tv_sec = x.tv_usec;]])],
|
|
[gl_cv_sys_struct_timeval=yes],
|
|
[gl_cv_sys_struct_timeval=no])
|
|
])
|
|
if test $gl_cv_sys_struct_timeval != yes; then
|
|
HAVE_STRUCT_TIMEVAL=0
|
|
else
|
|
dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined
|
|
dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only
|
|
dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is
|
|
dnl smaller than the 'time_t' type mandated by POSIX.
|
|
dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but
|
|
dnl that is good enough.
|
|
AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member],
|
|
[gl_cv_sys_struct_timeval_tv_sec],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#if HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#endif
|
|
#include <time.h>
|
|
#if HAVE_WINSOCK2_H
|
|
# include <winsock2.h>
|
|
#endif
|
|
]],
|
|
[[static struct timeval x;
|
|
typedef int verify_tv_sec_type[
|
|
sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1
|
|
];
|
|
]])],
|
|
[gl_cv_sys_struct_timeval_tv_sec=yes],
|
|
[gl_cv_sys_struct_timeval_tv_sec=no])
|
|
])
|
|
if test $gl_cv_sys_struct_timeval_tv_sec != yes; then
|
|
REPLACE_STRUCT_TIMEVAL=1
|
|
fi
|
|
fi
|
|
|
|
dnl Check for declarations of anything we want to poison if the
|
|
dnl corresponding gnulib module is not in use.
|
|
gl_WARN_ON_USE_PREPARE([[
|
|
#if HAVE_SYS_TIME_H
|
|
# include <sys/time.h>
|
|
#endif
|
|
#include <time.h>
|
|
]], [gettimeofday])
|
|
])
|
|
|
|
AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
|
|
[
|
|
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
|
|
AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
|
|
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
|
|
dnl Define it also as a C macro, for the benefit of the unit tests.
|
|
gl_MODULE_INDICATOR_FOR_TESTS([$1])
|
|
])
|
|
|
|
AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS],
|
|
[
|
|
GNULIB_GETTIMEOFDAY=0; AC_SUBST([GNULIB_GETTIMEOFDAY])
|
|
dnl Assume POSIX behavior unless another module says otherwise.
|
|
HAVE_GETTIMEOFDAY=1; AC_SUBST([HAVE_GETTIMEOFDAY])
|
|
HAVE_STRUCT_TIMEVAL=1; AC_SUBST([HAVE_STRUCT_TIMEVAL])
|
|
HAVE_SYS_TIME_H=1; AC_SUBST([HAVE_SYS_TIME_H])
|
|
HAVE_TIMEZONE_T=0; AC_SUBST([HAVE_TIMEZONE_T])
|
|
REPLACE_GETTIMEOFDAY=0; AC_SUBST([REPLACE_GETTIMEOFDAY])
|
|
REPLACE_STRUCT_TIMEVAL=0; AC_SUBST([REPLACE_STRUCT_TIMEVAL])
|
|
])
|