[vtk-developers] glext.h and glxext.h on OSX

[Darren Weber]

Please advise on which headers to use when building VTK-5.4.0 on OSX for
glext.h and glxext.h

The default cmake settings are:
VTK_GLEXT_FILE:FILEPATH=<srcPath>/Utilities/ParseOGLExt/headers/glext.h
VTK_GLXEXT_FILE:FILEPATH=<srcPath>/Utilities/ParseOGLExt/headers/glxext.h

The following are possible alternatives for glext.h (similarly for glxext.h)
on an OSX system (10.5.6, with Xcode 3.x, XQuartz, and macports with mesa):

Apple installations:
/Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
/Developer/SDKs/MacOSX10.4u.sdk/usr/X11R6/include/GL/glext.h
/Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
/Developer/SDKs/MacOSX10.5.sdk/usr/X11/include/GL/glext.h
/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h

macports installation of mesa:
/opt/local/include/GL/glext.h

XQuartz installation:
/usr/X11/include/GL/glext.h

Thanks in advance,
Darren
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