From 239ca9aa8022820d56798f06ea6836162a0892ea Mon Sep 17 00:00:00 2001
From: Maks Orlovich <morlovich@google.com>
Date: Tue, 24 Nov 2015 15:16:06 -0500
Subject: [PATCH] Pass in -D_GLIBCXX_USE_CXX11_ABI=0, so people using gcc-5.x
 can use psol.a we built with 4.8

See issue 942
---
 config | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/config b/config
index 17a213886..594aa05a9 100644
--- a/config
+++ b/config
@@ -79,6 +79,12 @@ fi
 
 CFLAGS="$CFLAGS $FLAG_MARCH"
 
+# For now, standardize on gcc-4.x ABI --- if we don't set this, people building
+# with new gcc defaulting to gcc-5 C++11 ABI will have build trouble linking
+# to our libpsol.a
+# See https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
+CFLAGS="$CFLAGS -D_GLIBCXX_USE_CXX11_ABI=0"
+
 case "$NGX_GCC_VER" in
   4.8*)
     # On GCC 4.8 and above, -Wall enables -Wunused-local-typedefs.  This breaks