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057306483c
* lib/filemode.h, lib/signal.in.h, lib/stat.c, lib/stdint.in.h: * lib/stdlib.in.h, lib/unistd.in.h, m4/extensions.m4, m4/getloadavg.m4: * m4/getopt.m4, m4/gnulib-common.m4, m4/largefile.m4, m4/mktime.m4: * m4/multiarch.m4, m4/nocrash.m4, m4/stdio_h.m4, m4/time_r.m4: Copy new versions from gnulib, incorporating the following changes: 2012-06-22 time_r: fix typo that always overrode localtime_r decl 2012-06-22 Write "Mac OS X" instead of "MacOS X". 2012-06-21 mktime: fix integer overflow in 'configure'-time test 2012-06-21 nonblocking: Avoid compilation error on mingw64. 2012-06-19 stat, fstat: Avoid warnings on mingw64. 2012-06-19 getopt-gnu: Fix exit code overflow in autoconf test.
59 lines
1.8 KiB
Plaintext
59 lines
1.8 KiB
Plaintext
dnl Reentrant time functions: localtime_r, gmtime_r.
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dnl Copyright (C) 2003, 2006-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Paul Eggert.
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AC_DEFUN([gl_TIME_R],
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[
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dnl Persuade glibc and Solaris <time.h> to declare localtime_r.
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
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AC_REQUIRE([AC_C_RESTRICT])
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dnl Some systems don't declare localtime_r() and gmtime_r() if _REENTRANT is
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dnl not defined.
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AC_CHECK_DECLS([localtime_r], [], [], [[#include <time.h>]])
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if test $ac_cv_have_decl_localtime_r = no; then
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HAVE_DECL_LOCALTIME_R=0
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fi
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AC_CHECK_FUNCS_ONCE([localtime_r])
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if test $ac_cv_func_localtime_r = yes; then
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HAVE_LOCALTIME_R=1
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AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature],
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[gl_cv_time_r_posix],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <time.h>]],
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[[/* We don't need to append 'restrict's to the argument types,
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even though the POSIX signature has the 'restrict's,
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since C99 says they can't affect type compatibility. */
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struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r;
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if (ptr) return 0;
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/* Check the return type is a pointer.
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On HP-UX 10 it is 'int'. */
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*localtime_r (0, 0);]])
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],
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[gl_cv_time_r_posix=yes],
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[gl_cv_time_r_posix=no])
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])
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if test $gl_cv_time_r_posix = yes; then
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REPLACE_LOCALTIME_R=0
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else
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REPLACE_LOCALTIME_R=1
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fi
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else
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HAVE_LOCALTIME_R=0
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fi
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])
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# Prerequisites of lib/time_r.c.
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AC_DEFUN([gl_PREREQ_TIME_R], [
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:
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])
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