MacOS has the compiler gfortran and the libraries LAPACK and BLAS already as system libraries. Important is to install Xcode from the Appstore. (Sign the license after opening it from the application folder.) Then install the Command-Line tools of Xcode. (Check the web for installation instructiuons).

I am installing Linux programs using homebrew

brew install fftw  --with-fortran
brew install openmpi
brew install grace

1. Unpack the PAW distribution into a directory, which I will name PAWDIR in the following.
2. Create a file ''parms.osx_gfortran_accelerate''
3. Check the values of the parameters FFTDIR, FFTHEADER, MPIDIR, and MPIDIR in parms.osx_gfortran_accelerate. Most likely you will need to adjust the version numbers.

autoconf
configure --with-parmfile=parms.osx_gfortran_accelerate
make all

1. Code sign

If you try to remotely execute unsigned code under macos, it will ask you for permission, This is painful when you run parallel code. Therefore it is advisable to sign the parallel executables. This is a fairly complicated procedure, which you need to look up.