enable_language(Fortran)

set(CMAKE_Fortran_MODULE_DIRECTORY ${PROJECT_BINARY_DIR}/include/fortran)

if(NOT DEFINED CMAKE_Fortran_COMPILER_ID)
    message(FATAL_ERROR "CMAKE_Fortran_COMPILER_ID variable is not defined!")
endif()

if(NOT CMAKE_Fortran_COMPILER_WORKS)
    message(FATAL_ERROR "CMAKE_Fortran_COMPILER_WORKS is false!")
endif()

if(DEFINED EXTRA_Fortran_FLAGS)
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${EXTRA_Fortran_FLAGS}")
endif()