Error building glu.c

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I syncronized modules like i did before and then Ctrl D to build them and this happens:

Compiling:glew_static.c
In file included from /home/dan/BlitzMax/mod/pub.mod/glew.mod/glew.c:32,
                 from /home/dan/BlitzMax/mod/pub.mod/glew.mod/glew_static.c:3:
/home/dan/BlitzMax/mod/pub.mod/glew.mod/GL/glew.h:1103:20: GL/glu.h: No such file or directory
Build Error: failed to compile /home/dan/BlitzMax/mod/pub.mod/glew.mod/glew_static.c
Process complete

Ive checked the directory and there is no glu.c