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Better support unsigned time_t

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This commit is contained in:
Werner Koch 2010-10-27 11:26:53 +00:00
parent dc5150db78
commit 2e82b095cd
8 changed files with 85 additions and 26 deletions
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27
acinclude.m4
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@ -305,5 +305,28 @@ fi
])
# GNUPG_TIME_T_UNSIGNED
# Check whether time_t is unsigned
#
AC_DEFUN([GNUPG_TIME_T_UNSIGNED],
[ AC_CACHE_CHECK(whether time_t is unsigned, gnupg_cv_time_t_unsigned,
[AC_REQUIRE([AC_HEADER_TIME])dnl
AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY(
[AC_INCLUDES_DEFAULT([])
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
],
[((time_t)-1) < 0])],
gnupg_cv_time_t_unsigned=no, gnupg_cv_time_t_unsigned=yes)])
if test $gnupg_cv_time_t_unsigned = yes; then
AC_DEFINE(HAVE_UNSIGNED_TIME_T,1,[Defined if time_t is an unsigned type])
fi
])# GNUPG_TIME_T_UNSIGNED