tce-load -i compiletc cmake 

wget https://doxygen.nl/files/doxygen-1.15.0.src.tar.gz

cd doxygen-1.15.0

grep -rl '^#!.*python$' | xargs sed -i '1s/python/&3/'

mkdir build
cd build

cmake -LAH -DCMAKE_C_FLAGS_RELEASE="-flto -march=i486 -mtune=i686 -Os -pipe" -DCMAKE_CXX_FLAGS_RELEASE="-flto -march=i486 -mtune=i686 -Os -pipe" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE -G "Unix Makefiles" -W no-dev ../

make [14m 50.23s]
sudo make install