From bc56d6eee02b637c96a18127e4f58e5476b2a885 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jukka=20Jyl=C3=A4nki?= <jujjyl@gmail.com>
Date: Thu, 18 Jun 2015 13:31:34 +0300
Subject: [PATCH] Work around OS X Xcode(?) build bug by adding -stdlib=libc++
 to CXXFLAGS when building.

---
 emsdk | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/emsdk b/emsdk
index b8b3f67..ee57264 100755
--- a/emsdk
+++ b/emsdk
@@ -457,6 +457,15 @@ def fastcomp_build_bin_dir(tool):
 
 make_env = os.environ.copy()
 
+cxxflags = ''
+if hasattr(make_env, 'CXXFLAGS'): cxxflags = make_env['CXXFLAGS'] + ' '
+
+# To work around a build issue with older Mac OS X builds, add -stdlib=libc++ to all builds.
+# See https://groups.google.com/forum/#!topic/emscripten-discuss/5Or6QIzkqf0
+if OSX: cxxflags += '-stdlib=libc++'
+
+make_env['CXXFLAGS'] = cxxflags
+
 def find_msbuild(sln_file):
   search_paths_vs2013 = [os.path.join(os.environ['ProgramFiles'], 'MSBuild/12.0/Bin/amd64'),
                         os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/12.0/Bin/amd64'),