mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
846657afaf
This incorporates: 2020-08-16 time_rz: remove unused functions 2020-08-16 time_rz: fix issues with mktime_z failures 2020-08-16 nstrftime: Guide inlining also on clang 2020-08-16 intprops: Avoid bogus warning on clang 2020-08-16 libc-config: Enable __REDIRECT macro also on clang 2020-08-16 regex: Use initializer shorthand syntax also with clang 2020-08-16 regex: Use space optimization also with clang 2020-08-16 Use _Static_assert and static_assert when present on clang 2020-08-16 Use 'throw ()' for optimization in C++ mode also on clang 2020-08-16 stdio: Don't break attribute 'scanf' on clang 2020-08-16 Fix "warning: 'format' attribute ...: rpl_printf" 2020-08-16 Fix "warning: attribute declaration must precede definition" 2020-08-16 Fix undesired warnings 2020-08-16 Don't use Autoconf quadrigraphsxo 2020-08-16 Fix quoting of AC_LANG_PROGRAM arguments 2020-08-16 Assume autoconf >= 2.64 2020-08-15 nstrftime: be more predictable about errno 2020-08-15 canonicalize: Fix autoconf test on MSVC/clang 2020-08-15 Support compiling without -loldnames on native Windows 2020-08-14 mktime, mktime-internal: Remove obsolete code 2020-08-14 Assume tzset exists * lib/c++defs.h, lib/canonicalize-lgpl.c, lib/cdefs.h, lib/dup2.c: * lib/fcntl.in.h, lib/getopt-cdefs.in.h, lib/intprops.h, lib/md5.h: * lib/mktime.c, lib/nstrftime.c, lib/open.c, lib/regcomp.c: * lib/regex_internal.h, lib/stdio.in.h, lib/stdlib.in.h: * lib/strftime.h, lib/string.in.h, lib/sys_select.in.h: * lib/sys_stat.in.h, lib/sys_time.in.h, lib/time.in.h, lib/time_rz.c: * lib/unistd.in.h, lib/verify.h, m4/00gnulib.m4: * m4/absolute-header.m4, m4/alloca.m4, m4/canonicalize.m4, m4/dup2.m4: * m4/fchmodat.m4, m4/fcntl.m4, m4/fdopendir.m4, m4/fpending.m4: * m4/futimens.m4, m4/getdtablesize.m4, m4/getloadavg.m4: * m4/gnulib-common.m4, m4/include_next.m4, m4/largefile.m4: * m4/manywarnings.m4, m4/mktime.m4, m4/nstrftime.m4, m4/open-slash.m4: * m4/pselect.m4, m4/pthread_sigmask.m4, m4/time_h.m4, m4/utimens.m4: * m4/utimensat.m4, m4/utimes.m4, m4/warnings.m4: Copy from Gnulib. * lib/gnulib.mk.in: Regenerate.
67 lines
2.0 KiB
Plaintext
67 lines
2.0 KiB
Plaintext
# serial 9
|
|
# See if we need to provide futimens replacement.
|
|
|
|
dnl Copyright (C) 2009-2020 Free Software Foundation, Inc.
|
|
dnl This file is free software; the Free Software Foundation
|
|
dnl gives unlimited permission to copy and/or distribute it,
|
|
dnl with or without modifications, as long as this notice is preserved.
|
|
|
|
# Written by Eric Blake.
|
|
|
|
AC_DEFUN([gl_FUNC_FUTIMENS],
|
|
[
|
|
AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
|
|
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
|
|
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
|
|
AC_CHECK_FUNCS_ONCE([futimens])
|
|
if test $ac_cv_func_futimens = no; then
|
|
HAVE_FUTIMENS=0
|
|
else
|
|
AC_CACHE_CHECK([whether futimens works],
|
|
[gl_cv_func_futimens_works],
|
|
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
]GL_MDA_DEFINES],
|
|
[[struct timespec ts[2];
|
|
int fd = creat ("conftest.file", 0600);
|
|
struct stat st;
|
|
if (fd < 0) return 1;
|
|
ts[0].tv_sec = 1;
|
|
ts[0].tv_nsec = UTIME_OMIT;
|
|
ts[1].tv_sec = 1;
|
|
ts[1].tv_nsec = UTIME_NOW;
|
|
errno = 0;
|
|
if (futimens (AT_FDCWD, NULL) == 0) return 2;
|
|
if (errno != EBADF) return 3;
|
|
if (futimens (fd, ts)) return 4;
|
|
sleep (1);
|
|
ts[0].tv_nsec = UTIME_NOW;
|
|
ts[1].tv_nsec = UTIME_OMIT;
|
|
if (futimens (fd, ts)) return 5;
|
|
if (fstat (fd, &st)) return 6;
|
|
if (st.st_ctime < st.st_atime) return 7;
|
|
]])],
|
|
[gl_cv_func_futimens_works=yes],
|
|
[gl_cv_func_futimens_works=no],
|
|
[case "$host_os" in
|
|
# Guess no on glibc systems.
|
|
*-gnu* | gnu*) gl_cv_func_futimens_works="guessing no" ;;
|
|
# Guess no on musl systems.
|
|
*-musl*) gl_cv_func_futimens_works="guessing no" ;;
|
|
# Guess yes otherwise.
|
|
*) gl_cv_func_futimens_works="guessing yes" ;;
|
|
esac
|
|
])
|
|
rm -f conftest.file])
|
|
case "$gl_cv_func_futimens_works" in
|
|
*yes) ;;
|
|
*)
|
|
REPLACE_FUTIMENS=1
|
|
;;
|
|
esac
|
|
fi
|
|
])
|