From 86ace5112bd89ecc251d923ea67320cc73043421 Mon Sep 17 00:00:00 2001
From: Fredrik Roubert <roubert@google.com>
Date: Wed, 27 Jan 2016 22:11:22 +0100
Subject: [PATCH] Set -undefined dynamic_lookup when linking on Mac OS X.

This fixes #822.
---
 cpp/CMakeLists.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 3539b941b..fa5ac472d 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -126,6 +126,8 @@ find_required_program (JAVA java
 if (APPLE)
   FIND_LIBRARY (COREFOUNDATION_LIB CoreFoundation)
   FIND_LIBRARY (FOUNDATION_LIB Foundation)
+  set (CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS
+    "${CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS} -undefined dynamic_lookup")
 endif ()
 
 if (${USE_STD_MAP} STREQUAL "OFF")