How to create an executable file

Hi, I have to install Zacros on my laptop. This is a chemistry software.
First, I have to download the GFortran compiler and follow these instructions:

“cd path\to\source\of\Zacros
md build # If it does not exist yet
cd build
copy path\to\makefiles\makefile-gfortran-parallel-windows makefile
make”

Once done, it should list “zacros.exe” in the “build” directory.
However, it only lists:
CMakeFiles

Could you help me, please?