From 784dfc917e99429bdbb70fb9dd80c16dfeb73659 Mon Sep 17 00:00:00 2001

From: Florian Weimer <fweimer@redhat.com>

Date: Thu, 12 Jan 2023 17:49:40 +0100

Subject: [PATCH] CCache: Do not rely on C89-only features in configure.ac

Add missing #include directives to obtain additional function

prototypes.  This avoids altering the result of this test with C99

compilers which do not support implicit function declarations.

---

 CCache/configure.ac | 5 ++++-

 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CCache/configure.ac b/CCache/configure.ac

index 2db3553ce..9afd49e83 100644

--- a/CCache/configure.ac

+++ b/CCache/configure.ac

@@ -63,6 +63,9 @@ AC_CACHE_CHECK([for C99 vsnprintf],ccache_cv_HAVE_C99_VSNPRINTF,[

 AC_RUN_IFELSE([AC_LANG_SOURCE([[

 #include <sys/types.h>

 #include <stdarg.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

 void foo(const char *format, ...) { 

        va_list ap;

        int len;

@@ -77,7 +80,7 @@ void foo(const char *format, ...) {

        exit(0);

 }

-main() { foo("hello"); }

+int main(void) { foo("hello"); }

 ]])],[ccache_cv_HAVE_C99_VSNPRINTF=yes],[ccache_cv_HAVE_C99_VSNPRINTF=no],[ccache_cv_HAVE_C99_VSNPRINTF=cross])])

 if test x"$ccache_cv_HAVE_C99_VSNPRINTF" = x"yes"; then

     AC_DEFINE(HAVE_C99_VSNPRINTF, 1, [ ])

-- 

2.33.8