From c2630072f4e626804e2a64140d676771d31da14c Mon Sep 17 00:00:00 2001
From: Steven Watanabe <steven@providere-consulting.com>
Date: Mon, 19 Feb 2018 11:15:17 -0700
Subject: [PATCH] Avoid an error in C with gcc-4.x.  This fix is required
 because of -Werror (which is necessary in flags.jam).

---
 src/tools/flags.jam | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tools/flags.jam b/src/tools/flags.jam
index a9f8fc187..045f9af69 100644
--- a/src/tools/flags.jam
+++ b/src/tools/flags.jam
@@ -34,7 +34,7 @@ rule init ( )
 rule write-main ( target : : properties * )
 {
     print.output $(target) ;
-    print.text "int main() {}\n" : yes ;
+    print.text "int main() { return 0; }\n" : yes ;
 }
 
 # Applies true-properties if the toolset recognizes a specific flag.