To compile the source code the following requirements have to be met:
The Linux compilation steps are the following:
cd QUAD && make
CC = gcc CXX = g++
should point to the binaries in /usr/local/Cellar/gcc@6/6.4.0/bin to use the other compilers.
CC = /usr/local/Cellar/gcc@6/6.4.0/bin/gcc-6 CXX = /usr/local/Cellar/gcc@6/6.4.0/bin/g++-6
and add the line
where <directory> is the directory