81%] Building CXX object hphp/runtime/ext/CMakeFiles/hphp_runtime_ext.dir/xdebug/xdebug_profiler.cpp.o
/root/Downloads/hhvm/hphp/runtime/ext/gd/libgd/webpimg.cpp: In function ‘WebPResult VPXEncode(const uint8*, const uint8*, const uint8*, int, int, int, int, int, int, int, int, unsigned char**, int*)’:
/root/Downloads/hhvm/hphp/runtime/ext/gd/libgd/webpimg.cpp:708:24: error: ‘IMG_FMT_I420’ was not declared in this scope
     vpx_img_wrap(&img, IMG_FMT_I420,
                        ^
/root/Downloads/hhvm/hphp/runtime/ext/gd/libgd/webpimg.cpp:710:16: error: ‘PLANE_Y’ was not declared in this scope
     img.planes[PLANE_Y] = (uint8*)(Y);
                ^
/root/Downloads/hhvm/hphp/runtime/ext/gd/libgd/webpimg.cpp:711:16: error: ‘PLANE_U’ was not declared in this scope
     img.planes[PLANE_U] = (uint8*)(U);
                ^
/root/Downloads/hhvm/hphp/runtime/ext/gd/libgd/webpimg.cpp:712:16: error: ‘PLANE_V’ was not declared in this scope
     img.planes[PLANE_V] = (uint8*)(V);
                ^