GNAT¶

On Linux, GHDL is configured by configure and build by make.

First, GHDL needs to be configured. It is common to specify a PREFIX (installation directory like /usr/local or /opt/ghdl). Without any other option, configure select mcode as backend.
Next, make starts the compilation process.
Finally, make install installs GHDL into the installation directory specified by PREFIX. You may need super user privileges (sudo ...).

Example:

cd <ghdl>
mkdir build
cd build
../configure --prefix=PREFIX
make
sudo make install