Using CMake in mingw32 for a Fortran code - cmake

Question

Here is a simple question, I need to create a CMake builder onto mingw32. I want to define the compiler in the CMakeLists.txt (although I want to specify that when calling cmake later). The txt file looks like this:
cmake_minimum_required(VERSION 3.4)
SET(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_GENERATOR "MinGW Makefiles")
message("generator is set to ${CMAKE_GENERATOR}")
#set (CMAKE_Fortran_COMPILER "C:/Program Files/PGI/win64/15.10/bin")
set (CMAKE_Fortran_COMPILER "C:/Program Files (x86)/Silverfrost/FTN95")
and it returns:
generator is set to MinGW Makefiles
-- The Fortran compiler identification is unknown
-- Check for working Fortran compiler: C:/Program Files (x86)/Silverfrost/FTN95
-- Check for working Fortran compiler: C:/Program Files (x86)/Silverfrost/FTN95 -- broken
CMake Error at C:/Program Files (x86)/CMake/share/cmake- 3.4/Modules/CMakeTestFortranCompiler.cmake:54 (message):
The Fortran compiler "C:/Program Files (x86)/Silverfrost/FTN95" is not able
to compile a simple test program.
What do I do wrong ? I understand it does not find the compiler correctly. Thank you for your help.
Edit. As suggested I post the CMakeError.log
Compiling the Fortran compiler identification source file "CMakeFortranCompilerId.F" failed.
Compiler: C:/Program Files (x86)/Silverfrost/FTN95
Build flags:
Id flags: -v
The output was:
Access is denied
Compiling the Fortran compiler identification source file "CMakeFortranCompilerId.F" failed.
Compiler: C:/Program Files (x86)/Silverfrost/FTN95
Build flags:
Id flags:
The output was:
Access is denied
Compiling the Fortran compiler identification source file "CMakeFortranCompilerId.F" failed.
Compiler: C:/Program Files (x86)/Silverfrost/FTN95
Build flags:
Id flags: -c
The output was:
Access is denied
Compiling the Fortran compiler identification source file "CMakeFortranCompilerId.F" failed.
Compiler: C:/Program Files (x86)/Silverfrost/FTN95
Build flags:
Id flags: -fpp
The output was:
Access is denied
Checking whether the Fortran compiler is Compaq using "-what" did not match "Compaq Visual Fortran":
Checking whether the Fortran compiler is NAG using "-V" did not match "NAG Fortran Compiler":
Determining if the Fortran compiler works failed with the following output:
Change Dir: C:/Users/RolandGuichard/Desktop/SATURN/SATGPU/testcm/CMakeFiles/CMakeTmp
Run Build Command:"C:/Program Files (x86)/Microsoft Visual Studio 14.0/Common7/IDE/devenv.com" "CMAKE_TRY_COMPILE.sln" "/build" "Debug" "/project" "cmTC_e9efb"
The Application Data folder for Visual Studio could not be created.
Any more information I can track here ? Thank you.

Answer 1

To help others: After 4 years, i have hit the same issue. I solved it by making sure you point to the exact location of the FORTRAN executable in your CMakeList.txt like this : set(CMAKE_Fortran_COMPILER "C:/MinGW/bin/gfortran.exe"). This solves it for me. Let me know if it works.

Answer 2

As the Visual Studio generator does not support MinGW gfortran. They are totally separate ecosystems. Remove your build directory and create a fresh one.
so to define the generator what works for me is to define the it using a flag in the command line
cmake -G "MinGW Makefiles"
I have tried also to set the CMAKE_GENERATOR as a variable inside the CMakefile.txt
set(CMAKE_GENERATOR "MinGW Makefiles")
but for some reason, it did not work and I have to pass the generator in the command line