"The inclusion of GLU is historical. [...] It's not needed for GLEW to
build or run, but it's opt-out that reason. I'd recommend using
-DGLEW_NO_GLU since GLU is rarely seen in modern codebases nowadays."
https://github.com/nigels-com/glew/issues/192#issuecomment-411641657
Each package using glew.h has to decide whether to use the opt-out for
glu or not. Since supertux does not need libglu we can safely remove
the dependency by adding -DGLEW_NO_GLU to TARGET_CXXFLAGS.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
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