From 21ef57516576c09d7023d0906fe7774e38f99bb7 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 6 Sep 2019 12:54:48 +0200
Subject: [PATCH] AC_QEF_C_NORETURN: Include <stdlib.h> for exit

The exit function is declared in <stdlib.h>, not <stdio.h>.  Without
this change, the autoconf check will always fail with strict C99
compilers which do not support implicit function declarations.
---
 acinclude.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 77fdec8..d069e52 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -148,7 +148,7 @@ AC_DEFUN([AC_QEF_C_NORETURN],
 AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts noreturn attribute)
 AC_CACHE_VAL(qef_cv_c_noreturn,
 [qef_cv_c_noreturn=no
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
 void f (void) __attribute__ ((noreturn));
 void f (void)
 {