From 985c2cd198213b250c61d8c6621af52e318c4c12 Mon Sep 17 00:00:00 2001
From: crumpled-acronym <60061744+crumpled-acronym@users.noreply.github.com>
Date: Mon, 30 Jun 2025 12:32:02 +0200
Subject: [PATCH] Fix compilation on gcc >= 14
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`./configure` fails for gcc >= 14 with the following error

```
checking "libosip prefix"...
checking for osip_init in -losip2... yes
checking for parser_init in -losipparser2... yes
checking libosip2 version > 3.0.0... *** ERROR: libosip2-3.x.x is required!
```

which in fact is caused by the test program in `ACX_CHECK_LIBOSIP_VERSION` function in `acinclude.m4` due to

```
conftest.c:4:3: error: return type defaults to ‘int’ [-Wimplicit-int]
    4 | main() {
      | ^~~~
```

This patch fixes the issue!

Upstream: https://github.com/hb9xar/siproxd/commit/985c2cd198213b250c61d8c6621af52e318c4c12

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
---
 acinclude.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 6fa4828..8164246 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -340,7 +340,7 @@ dnl pointer to the structure (bad)
 AC_COMPILE_IFELSE(
 [AC_LANG_SOURCE([
   #include <osipparser2/osip_parser.h>
-  main() {
+  int main() {
   osip_message_t t;
   int  e;
   e=t.contacts.nb_elt;
-- 
2.47.3