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| author | Ludovic Courtès <ludo@gnu.org> | 2010-05-29 23:58:12 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2010-05-29 23:58:12 +0200 |
| commit | a927b6c1d885162c8c3068a74c07840c5bb52162 (patch) | |
| tree | 37b08eaeeb45e1023e0aeb0726bf30ef67b233fb /m4/time_r.m4 | |
| parent | 9c17af407008aae5812d8c3e058c54d04a59c8d6 (diff) | |
| download | guile-a927b6c1d885162c8c3068a74c07840c5bb52162.tar.gz | |
Update Gnulib to v0.0-3955-g8ab5996.
Diffstat (limited to 'm4/time_r.m4')
| -rw-r--r-- | m4/time_r.m4 | 50 |
1 files changed, 30 insertions, 20 deletions
diff --git a/m4/time_r.m4 b/m4/time_r.m4 index b5938e796..9e82d39ff 100644 --- a/m4/time_r.m4 +++ b/m4/time_r.m4 @@ -1,7 +1,6 @@ -dnl Reentrant time functions like localtime_r. +dnl Reentrant time functions: localtime_r, gmtime_r. -dnl Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, -dnl Inc. +dnl Copyright (C) 2003, 2006-2010 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. @@ -10,29 +9,40 @@ dnl Written by Paul Eggert. AC_DEFUN([gl_TIME_R], [ - dnl Persuade glibc and Solaris <time.h> to declare localtime_r. + dnl Persuade glibc and Solaris <time.h> to declare localtime_r. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) AC_REQUIRE([AC_C_RESTRICT]) - AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature], - [gl_cv_time_r_posix], - [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( - [[#include <time.h>]], - [[/* We don't need to append 'restrict's to the argument types, - even though the POSIX signature has the 'restrict's, - since C99 says they can't affect type compatibility. */ - struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r; - if (ptr) return 0; - /* Check the return type is a pointer. On HP-UX 10 it is 'int'. */ - *localtime_r (0, 0);]])], - [gl_cv_time_r_posix=yes], - [gl_cv_time_r_posix=no])]) - if test $gl_cv_time_r_posix = yes; then - REPLACE_LOCALTIME_R=0 + AC_CHECK_FUNCS_ONCE([localtime_r]) + if test $ac_cv_func_localtime_r = yes; then + AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature], + [gl_cv_time_r_posix], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <time.h>]], + [[/* We don't need to append 'restrict's to the argument types, + even though the POSIX signature has the 'restrict's, + since C99 says they can't affect type compatibility. */ + struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r; + if (ptr) return 0; + /* Check the return type is a pointer. + On HP-UX 10 it is 'int'. */ + *localtime_r (0, 0);]]) + ], + [gl_cv_time_r_posix=yes], + [gl_cv_time_r_posix=no]) + ]) + if test $gl_cv_time_r_posix = yes; then + REPLACE_LOCALTIME_R=0 + else + REPLACE_LOCALTIME_R=1 + fi else - REPLACE_LOCALTIME_R=1 + HAVE_LOCALTIME_R=0 + fi + if test $HAVE_LOCALTIME_R = 0 || test $REPLACE_LOCALTIME_R = 1; then AC_LIBOBJ([time_r]) gl_PREREQ_TIME_R fi |