Compiling ==> 'glsl_material.c' source/blender/src/glsl_material.c: In function ‘glsl_init_materialtree’: source/blender/src/glsl_material.c:242: error: ‘USER_GLSL’ undeclared (first use in this function) source/blender/src/glsl_material.c:242: error: (Each undeclared identifier is reported only once source/blender/src/glsl_material.c:242: error: for each function it appears in.) source/blender/src/glsl_material.c: In function ‘glsl_redo_programs’: source/blender/src/glsl_material.c:559: error: ‘USER_GLSL’ undeclared (first use in this function) source/blender/src/glsl_material.c: In function ‘glsl_redo_mat_program’: source/blender/src/glsl_material.c:581: error: ‘USER_GLSL’ undeclared (first use in this function) scons: *** [/home/blender/build_dir_maike/source/blender/src/glsl_material.o] Error 1 scons: building terminated because of errors.