mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-13 09:32:47 +00:00
110 lines
4.1 KiB
Plaintext
110 lines
4.1 KiB
Plaintext
# Configure a more-standard replacement for <time.h>.
|
|
|
|
# Copyright (C) 2000-2001, 2003-2007, 2009-2012 Free Software Foundation, Inc.
|
|
|
|
# serial 7
|
|
|
|
# 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 Jim Meyering.
|
|
|
|
AC_DEFUN([gl_HEADER_TIME_H],
|
|
[
|
|
dnl Use AC_REQUIRE here, so that the default behavior below is expanded
|
|
dnl once only, before all statements that occur in other macros.
|
|
AC_REQUIRE([gl_HEADER_TIME_H_BODY])
|
|
])
|
|
|
|
AC_DEFUN([gl_HEADER_TIME_H_BODY],
|
|
[
|
|
AC_REQUIRE([AC_C_RESTRICT])
|
|
AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
|
|
gl_NEXT_HEADERS([time.h])
|
|
AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
|
|
])
|
|
|
|
dnl Check whether 'struct timespec' is declared
|
|
dnl in time.h, sys/time.h, or pthread.h.
|
|
|
|
AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
|
|
[
|
|
AC_CHECK_HEADERS_ONCE([sys/time.h])
|
|
AC_CACHE_CHECK([for struct timespec in <time.h>],
|
|
[gl_cv_sys_struct_timespec_in_time_h],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <time.h>
|
|
]],
|
|
[[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
|
|
[gl_cv_sys_struct_timespec_in_time_h=yes],
|
|
[gl_cv_sys_struct_timespec_in_time_h=no])])
|
|
|
|
TIME_H_DEFINES_STRUCT_TIMESPEC=0
|
|
SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
|
|
PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
|
|
if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
|
|
TIME_H_DEFINES_STRUCT_TIMESPEC=1
|
|
else
|
|
AC_CACHE_CHECK([for struct timespec in <sys/time.h>],
|
|
[gl_cv_sys_struct_timespec_in_sys_time_h],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <sys/time.h>
|
|
]],
|
|
[[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
|
|
[gl_cv_sys_struct_timespec_in_sys_time_h=yes],
|
|
[gl_cv_sys_struct_timespec_in_sys_time_h=no])])
|
|
if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then
|
|
SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
|
|
else
|
|
AC_CACHE_CHECK([for struct timespec in <pthread.h>],
|
|
[gl_cv_sys_struct_timespec_in_pthread_h],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <pthread.h>
|
|
]],
|
|
[[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
|
|
[gl_cv_sys_struct_timespec_in_pthread_h=yes],
|
|
[gl_cv_sys_struct_timespec_in_pthread_h=no])])
|
|
if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
|
|
PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
|
|
fi
|
|
fi
|
|
fi
|
|
AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC])
|
|
AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
|
|
AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
|
|
])
|
|
|
|
AC_DEFUN([gl_TIME_MODULE_INDICATOR],
|
|
[
|
|
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
|
|
AC_REQUIRE([gl_HEADER_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_TIME_H_DEFAULTS],
|
|
[
|
|
GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME])
|
|
GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP])
|
|
GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME])
|
|
GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM])
|
|
GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R])
|
|
dnl Assume proper GNU behavior unless another module says otherwise.
|
|
HAVE_DECL_LOCALTIME_R=1; AC_SUBST([HAVE_DECL_LOCALTIME_R])
|
|
HAVE_NANOSLEEP=1; AC_SUBST([HAVE_NANOSLEEP])
|
|
HAVE_STRPTIME=1; AC_SUBST([HAVE_STRPTIME])
|
|
HAVE_TIMEGM=1; AC_SUBST([HAVE_TIMEGM])
|
|
dnl If another module says to replace or to not replace, do that.
|
|
dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
|
|
dnl this lets maintainers check for portability.
|
|
REPLACE_LOCALTIME_R=GNULIB_PORTCHECK; AC_SUBST([REPLACE_LOCALTIME_R])
|
|
REPLACE_MKTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_MKTIME])
|
|
REPLACE_NANOSLEEP=GNULIB_PORTCHECK; AC_SUBST([REPLACE_NANOSLEEP])
|
|
REPLACE_TIMEGM=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TIMEGM])
|
|
])
|