diff options
Diffstat (limited to 'gl/m4/timegm.m4')
| -rw-r--r-- | gl/m4/timegm.m4 | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gl/m4/timegm.m4 b/gl/m4/timegm.m4 new file mode 100644 index 00000000..be323c9b --- /dev/null +++ b/gl/m4/timegm.m4 @@ -0,0 +1,40 @@ +# timegm.m4 serial 6 +dnl Copyright (C) 2003, 2007, 2009 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. + +AC_DEFUN([gl_FUNC_TIMEGM], +[ + AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_MKTIME]) + if test $ac_cv_func_working_mktime = no; then + # Assume that timegm is buggy if mktime is. + AC_LIBOBJ([timegm]) + ac_cv_func_timegm=no + else + AC_REPLACE_FUNCS([timegm]) + fi + REPLACE_TIMEGM=1 + if test $ac_cv_func_timegm = yes; then + AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>]) + fi + if test $REPLACE_TIMEGM = 1; then + gl_PREREQ_TIMEGM + fi +]) + +# Prerequisites of lib/timegm.c. +AC_DEFUN([gl_PREREQ_TIMEGM], [ + AC_REQUIRE([gl_TIME_R]) + AC_REQUIRE([gl_FUNC_MKTIME]) + if test $ac_cv_func_working_mktime = yes; then + AC_CHECK_FUNC([__mktime_internal], , + [# mktime works but it doesn't export __mktime_internal, + # so we need to substitute our own mktime implementation. + AC_LIBOBJ([mktime]) + AC_DEFINE([mktime], [rpl_mktime], + [Define to rpl_mktime if the replacement function should be used.]) + gl_PREREQ_MKTIME]) + fi +]) |