if(NOT DEFINED ENV{FCFLAGS})
    if(CMAKE_Fortran_COMPILER_ID MATCHES Intel)
        set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}")
        set(CMAKE_Fortran_FLAGS_RELEASE "-O3 -ip")
        set(CMAKE_Fortran_FLAGS_DEBUG "-O0 -g -traceback")
    endif()
endif()