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https://github.com/openargus/argus/pull/5
From dd987328bd2b99977a1a686a1a6b36d1a3155ff7 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 25 Nov 2022 19:03:24 +0100
Subject: [PATCH] configure (AC_LBL_UNALIGNED_ACCESS): Avoid implicit function
decls
Implicit function declarations were removed from the C language
in 1999. Include the relevant header files to ensure that the
check still works with future compilers. C99 also requires
to declare the return types of all functions.
--- a/acsite.m4
+++ b/acsite.m4
@@ -298,8 +298,10 @@ AC_DEFUN([AC_LBL_UNALIGNED_ACCESS],
# include <sys/types.h>
# include <sys/wait.h>
# include <stdio.h>
+# include <stdlib.h>
+# include <unistd.h>
unsigned char a[[5]] = { 1, 2, 3, 4, 5 };
- main() {
+ int main() {
unsigned int i;
pid_t pid;
int status;
--- a/configure
+++ b/configure
@@ -5791,8 +5791,10 @@ else
# include <sys/types.h>
# include <sys/wait.h>
# include <stdio.h>
+# include <stdlib.h>
+# include <unistd.h>
unsigned char a[5] = { 1, 2, 3, 4, 5 };
- main() {
+ int main() {
unsigned int i;
pid_t pid;
int status;
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