In file included from source\blender\compositor\operations\COM_PlaneTrackMaskOperation.cpp:31:0: source\blender\blenlib/BLI_jitter.h:36:65: error: expected ',' or '...' before numeric constant source\blender\blenlib/BLI_jitter.h:37:65: error: expected ',' or '...' before numeric constant It appears that an include used in COM_PlaneTrackMaskOperation.cpp brings in some Windows header file, which in turn defines rad/rad1/rad2 as some numeric constants.