From bb733f43b5674294a12c99ac3e686c4b54427917 Mon Sep 17 00:00:00 2001
From: Vlad Buslov <tailcall@icloud.com>
Date: Fri, 9 Oct 2015 15:50:09 +0300
Subject: [PATCH] Changed AC_LANG from PROGRAM to SOURCE to prevent double
 definition of main

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

diff --git a/folly/configure.ac b/folly/configure.ac
index bceb1e58..bcfe9c94 100644
--- a/folly/configure.ac
+++ b/folly/configure.ac
@@ -235,7 +235,7 @@ AC_CACHE_CHECK(
   [for c++11 atomic support without GNU Atomic library],
   [folly_cv_lib_libatomic],
   [AC_LINK_IFELSE(
-    [AC_LANG_PROGRAM[
+    [AC_LANG_SOURCE[
       #include <atomic>
       int main() {
         struct Test { int val; };
-- 
2.34.1