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include/qwt3d_openglhelper.h:67:31: error: ‘gluErrorString’ was not declared in this scope
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=672023 With a quick look, It seems that qwt3d_openglhelper.h should have #include <GL/glu.h>"
#include <GL/glu.h>"