LGTM http://codereview.appspot.com/4354043/diff/1/Makefile File Makefile (left): http://codereview.appspot.com/4354043/diff/1/Makefile#oldcode37 Makefile:37: DEFINES += -DSK_ZLIB_INCLUDE="<zlib.h>" I don't believe SK_ZLIB_INCLUDE is currently defined for the gyp build. Is this Makefile build deprecated?