From 3fa3707b5752adfe348e101a194635cc11ace2af Mon Sep 17 00:00:00 2001 From: Thomas Guyot-Sionnest Date: Fri, 20 Mar 2009 02:48:40 -0400 Subject: Add the timegm Gnulib module --- gl/m4/time_r.m4 | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 gl/m4/time_r.m4 (limited to 'gl/m4/time_r.m4') diff --git a/gl/m4/time_r.m4 b/gl/m4/time_r.m4 new file mode 100644 index 00000000..c871b56d --- /dev/null +++ b/gl/m4/time_r.m4 @@ -0,0 +1,43 @@ +dnl Reentrant time functions like localtime_r. + +dnl Copyright (C) 2003, 2006, 2007, 2008 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. + +dnl Written by Paul Eggert. + +AC_DEFUN([gl_TIME_R], +[ + dnl Persuade glibc and Solaris 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_TRY_COMPILE( + [#include ], + [/* 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 + AC_LIBOBJ([time_r]) + gl_PREREQ_TIME_R + fi +]) + +# Prerequisites of lib/time_r.c. +AC_DEFUN([gl_PREREQ_TIME_R], [ + : +]) -- cgit v1.2.3-74-g34f1