PATH=/usr/local/opt/libxml2/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/opt/X11/bin CC=/usr/local/Cellar/gcc9/9-20181118/bin/gcc-9 CXX=/usr/local/Cellar/gcc9/9-20181118/bin/g++-9