From: Julian Ospald <hasufell@gentoo.org>
Date: Sun Aug  5 19:57:32 UTC 2012
Subject: build system

respect cxxflags

--- src/CMakeLists.txt
+++ src/CMakeLists.txt
@@ -1,4 +1,4 @@
-SET( CMAKE_CXX_FLAGS "-DTIXML_USE_STL -ggdb" )
+SET( CMAKE_CXX_FLAGS "$ENV{CXXFLAGS} -DTIXML_USE_STL" )
 
 INCLUDE_DIRECTORIES(
     ${SDL_INCLUDE_DIR}