FWIW I was able to workaround/overcome a similar build error by doing: sudo ln -s /usr/include/freetype2/freetype/ /usr/include/freetype YMMV.
FWIW I was able to workaround/overcome a similar build error by doing: freetype2/ freetype/ /usr/include/ freetype
sudo ln -s /usr/include/
YMMV.