From f507ee56b04bd299f7675cb559109d3f69feb090 Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Sun, 17 Sep 2023 08:01:54 -0400
Subject: [PATCH] Fix warning in configure sc_main compile. (#4499)

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c530489f3..6ad04c29c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -573,7 +573,7 @@ ACO_SAVE_LIBS="$LIBS"
 LIBS="$LIBS -lsystemc"
 AC_LINK_IFELSE(
     [AC_LANG_PROGRAM([[#include <systemc.h>
-                     extern "C" int sc_main(int argc, char* argv[]) {}
+                     extern "C" int sc_main(int argc, char* argv[]) { return 0; }
                      ]],[[sc_version()]])],
     [_my_result=yes
      AC_DEFINE([HAVE_SYSTEMC],[1],[Defined if have SystemC library])],