43 lines
1.7 KiB
Diff
43 lines
1.7 KiB
Diff
From 52d5988afb5999c71fd24484a93efefa2a9e9a8f Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Wed, 14 Jun 2023 14:41:04 +0200
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Subject: [PATCH 1298/1298] C99 compatibility enhancements for the configure
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script (#2519)
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* configure.ac: Enable system extensions
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Use AC_USE_SYSTEM_EXTENSIONS to build with _GNU_SOURCE (and similar
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macros on non-GNU systems), to avoid an implicit declaration of the
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strptime function. This improves compatibility with future compilers
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which do not support implicit function declarations.
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* configure.ac: gettimeofday lives in <sys/time.h>
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The gettimeofday function is declared in <sys/time.h>, not <time.h>,
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according to POSIX and actual systems. This avoids a configure
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probe failure with compilers which do not support implicit function
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declarations.
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---
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configure.ac | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/configure.ac
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+++ b/configure.ac
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@@ -22,6 +22,7 @@ AC_PROG_CPP_WERROR
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AC_PROG_YACC
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AC_OBJEXT
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AC_EXEEXT
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+AC_USE_SYSTEM_EXTENSIONS
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LT_INIT([shared static win32-dll])
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AM_PROG_CC_C_O
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@@ -129,7 +130,7 @@ AC_FIND_FUNC([gmtime_r], [c], [#include
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AC_FIND_FUNC([gmtime], [c], [#include <time.h>], [0])
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AC_FIND_FUNC([localtime_r], [c], [#include <time.h>], [0, 0])
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AC_FIND_FUNC([localtime], [c], [#include <time.h>], [0])
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-AC_FIND_FUNC([gettimeofday], [c], [#include <time.h>], [0, 0])
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+AC_FIND_FUNC([gettimeofday], [c], [#include <sys/time.h>], [0, 0])
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AC_CHECK_MEMBER([struct tm.tm_gmtoff], [AC_DEFINE([HAVE_TM_TM_GMT_OFF],1,[Define to 1 if the system has the tm_gmt_off field in struct tm])],
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[], [[#include <time.h>]])
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AC_CHECK_MEMBER([struct tm.__tm_gmtoff], [AC_DEFINE([HAVE_TM___TM_GMT_OFF],1,[Define to 1 if the system has the __tm_gmt_off field in struct tm])],
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