Should make the mac build work wit the GLM math library.

aa30265.diff

diff --git i/macosx/configs/Project-All.xcconfig w/macosx/configs/Project-All.xcconfig
index dcc1951..b99f469 100644
--- i/macosx/configs/Project-All.xcconfig
+++ w/macosx/configs/Project-All.xcconfig
@@ -27,5 +27,6 @@ LIBRARY_SEARCH_PATHS_QUOTED_3 = "$(SRCROOT)/external/QT"
 
 HEADER_SEARCH_PATHS_QUOTED_1 = "$(SRCROOT)/external/glew/include/**"
 HEADER_SEARCH_PATHS_QUOTED_2 = "$(SRCROOT)/../3rdparty/SDL/mac/include"
+HEADER_SEARCH_PATHS_QUOTED_3 = "$(SRCROOT)/../3rdparty"
 
 BACKEND = BACKEND_SDL // May also be BACKEND_QT but requires additional changes to the project file to switch
diff --git i/macosx/configs/Warzone-All.xcconfig w/macosx/configs/Warzone-All.xcconfig
index 6909ce8..9ea8824 100644
--- i/macosx/configs/Warzone-All.xcconfig
+++ w/macosx/configs/Warzone-All.xcconfig
@@ -16,7 +16,7 @@ WRAPPER_EXTENSION = app
 
 FRAMEWORK_SEARCH_PATHS = $(inherited) $(FRAMEWORK_SEARCH_PATHS_QUOTED_1) $(FRAMEWORK_SEARCH_PATHS_QUOTED_2) $(FRAMEWORK_SEARCH_PATHS_QUOTED_3) $(FRAMEWORK_SEARCH_PATHS_QUOTED_4)
 
-HEADER_SEARCH_PATHS = $(inherited) $(HEADER_SEARCH_PATHS_QUOTED_1) $(HEADER_SEARCH_PATHS_QUOTED_2)
+HEADER_SEARCH_PATHS = $(inherited) $(HEADER_SEARCH_PATHS_QUOTED_1) $(HEADER_SEARCH_PATHS_QUOTED_2) $(HEADER_SEARCH_PATHS_QUOTED_3)
 
 LIBRARY_SEARCH_PATHS = $(inherited) $(LIBRARY_SEARCH_PATHS_QUOTED_1) $(LIBRARY_SEARCH_PATHS_QUOTED_3)