--- SConstruct.old
+++ SConstruct
@@ -141,6 +141,7 @@
         LINKFLAGS = ['-pthread'],
         CC = 'gcc', CXX = 'g++',
         options = opts)
+    env['LINKFLAGS'] += SCons.Util.CLVar(os.environ['LDFLAGS'])
     check_headers = ['asio.hpp', 'boost/bind.hpp', 'GL/gl.h', 'GL/glu.h', 'SDL/SDL.h', 'SDL/SDL_image.h', 'SDL/SDL_rotozoom.h', 'vorbis/vorbisfile.h', 'GL/glew.h']