From a0568797724131159aa508a51e15c624404aa2da Mon Sep 17 00:00:00 2001
From: jorton <jorton@13f79535-47bb-0310-9956-ffa450edef68>
Date: Tue, 3 Jan 2023 08:43:21 +0000
Subject: Fix configure for compilers which don't accept implicit int (no
 longer part of C since C99).

Submitted by: Florian Weimer <fweimer redhat.com>
PR: 66396


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1906347 13f79535-47bb-0310-9956-ffa450edef68
---
 build/apr_common.m4 | 2 +-
 build/aprconf.py    | 4 ++--
 build/dbm.m4        | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/build/apr_common.m4 b/build/apr_common.m4
index 3be864702..03d7dca7f 100644
--- a/build/apr_common.m4
+++ b/build/apr_common.m4
@@ -501,7 +501,7 @@ AC_CACHE_CHECK([whether return code from strerror_r has type int],
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif
-main()
+int main(void)
 {
   char buf[1024];
   if (strerror_r(ERANGE, buf, sizeof buf) < 1) {
diff --git a/build/aprconf.py b/build/aprconf.py
index 74df43f13..e81bed3b2 100644
--- a/build/aprconf.py
+++ b/build/aprconf.py
@@ -275,7 +275,7 @@ void main(void)
 #ifndef SEM_FAILED
 #define SEM_FAILED (-1)
 #endif
-main()
+int main()
 {
     sem_t *psem;
     const char *sem_name = "/apr_autoconf";
@@ -394,7 +394,7 @@ int main(void) {
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/sem.h>
-main()
+int main()
 {
     union semun arg;
     semctl(0, 0, 0, arg);
diff --git a/build/dbm.m4 b/build/dbm.m4
index bbe9c863a..5c4ab26a6 100644
--- a/build/dbm.m4
+++ b/build/dbm.m4
@@ -235,7 +235,7 @@ AC_DEFUN([APU_TRY_BERKELEY_DB],
 #include <stdlib.h>
 #include <stdio.h>
 #include <$apu_try_berkeley_db_header>
-main ()
+int main (void)
 {
   int major, minor, patch;
 
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