From 41c0a19ae6e67e518f9f9c43bc7d7b61971bef4e Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Sun, 6 Nov 2022 03:27:57 +0000
Subject: [PATCH] Fix configure with Clang 15

Signed-off-by: Sam James <sam@gentoo.org>
--- a/autoconf/utils.m4
+++ b/autoconf/utils.m4
@@ -62,11 +62,12 @@ yes) i_dlfcn=define;;
 *)   i_dlfcn=undef;;
 esac
 cat > dyna.c <<EOM
-fred () { }
+int fred (void) { }
 EOM
 
 cat > fred.c <<EOM
 #include <stdio.h>
+#include <stdlib,h>
 #$i_dlfcn I_DLFCN
 #ifdef I_DLFCN
 #include <dlfcn.h>      /* the dynamic linker include file for Sunos/Solaris */
@@ -76,9 +77,9 @@ cat > fred.c <<EOM
 #include <link.h>
 #endif
 
-extern int fred() ;
+extern int fred(void) ;
 
-main()
+int main(void)
 {
     void * handle ;
     void * symbol ;
--- a/configure.in
+++ b/configure.in
@@ -696,6 +696,7 @@ dnl ***
 AC_CACHE_CHECK([for an implementation of va_copy()],lib_cv_va_copy,[
 	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 	#include <stdarg.h>
+	#include <stdlib.h>
 	void f (int i, ...) {
 	va_list args1, args2;
 	va_start (args1, i);
@@ -704,7 +705,7 @@ AC_CACHE_CHECK([for an implementation of va_copy()],lib_cv_va_copy,[
 	  exit (1);
 	va_end (args1); va_end (args2);
 	}
-	int main() {
+	int main(void) {
 	  f (0, 42);
 	  return 0;
 	}]])],
@@ -715,6 +716,7 @@ AC_CACHE_CHECK([for an implementation of va_copy()],lib_cv_va_copy,[
 AC_CACHE_CHECK([for an implementation of __va_copy()],lib_cv___va_copy,[
 	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 	#include <stdarg.h>
+	#include <stdlib.h>
 	void f (int i, ...) {
 	va_list args1, args2;
 	va_start (args1, i);
@@ -723,7 +725,7 @@ AC_CACHE_CHECK([for an implementation of __va_copy()],lib_cv___va_copy,[
 	  exit (1);
 	va_end (args1); va_end (args2);
 	}
-	int main() {
+	int main(void) {
 	  f (0, 42);
 	  return 0;
 	}]])],
@@ -745,6 +747,7 @@ fi
 AC_CACHE_CHECK([whether va_lists can be copied by value],lib_cv_va_val_copy,[
 	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 	#include <stdarg.h>
+	#include <stdlib.h>
 	void f (int i, ...) {
 	va_list args1, args2;
 	va_start (args1, i);