specify where the gl.h is on a mac

diff --git a/mussagl.pro b/mussagl.pro
index 69b137839d65cdeb8939f44d8096554a11eedbeb..ae1cade64d289183f9b00a32ef5640c52c9c84f3 100644 (file)
--- a/mussagl.pro
+++ b/mussagl.pro
@@ -66,3 +66,6 @@ win32 {
   LIBS += -lboost_program_options
 }
 
+macx {
+  INCLUDEPATH += /usr/X11R6/include
+}