diff --git a/Makefile b/Makefile
index d1d86c2..635ff84 100644
--- a/Makefile
+++ b/Makefile
@@ -35,9 +35,9 @@ else
 GLLIBS     := -lGL -lGLU
 endif
 
-CFLAGS   := $(LUAINCLUDE) $(SDLINCLUDE) $(ODEINCLUDE) -O2
-CXXFLAGS := $(CFLAGS)
-LDFLAGS  := $(LUALIBS) $(ODELIBS) $(GLLIBS) $(WINDOWSLIBS) $(SDLLIBS)
+export CFLAGS   := $(LUAINCLUDE) $(SDLINCLUDE) $(ODEINCLUDE) -O2
+export CXXFLAGS := $(CFLAGS)
+export LDFLAGS  := $(LUALIBS) $(ODELIBS) $(GLLIBS) $(WINDOWSLIBS) $(SDLLIBS)
 
 all: $(TARGET)