70 lines
1.9 KiB
CMake
70 lines
1.9 KiB
CMake
#.rst:
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#
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# Adds optional Fortran support.
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# Appends EXTRA_FCFLAGS to CMAKE_Fortran_FLAGS.
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# If environment variable FCFLAGS is set, then the FCFLAGS are used
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# and no other flags are used or appended.
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#
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# Variables used::
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#
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# EXTRA_FCFLAGS
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# ENABLE_FC_SUPPORT
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#
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# Variables defined::
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#
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# CMAKE_Fortran_MODULE_DIRECTORY (${PROJECT_BINARY_DIR}/include/fortran)
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#
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# Variables modified::
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#
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# CMAKE_Fortran_FLAGS
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#
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# Variables set::
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#
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# ENABLE_FC_SUPPORT
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#
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# Environment variables used::
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#
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# FCFLAGS
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#
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# Example autocmake.cfg entry::
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#
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# [fc]
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# source: https://github.com/scisoft/autocmake/raw/master/modules/fc.cmake
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# docopt: --fc=<FC> Fortran compiler [default: gfortran].
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# --extra-fc-flags=<EXTRA_FCFLAGS> Extra Fortran compiler flags [default: ''].
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# --fc-support=<FC_SUPPORT> Toggle Fortran language support (ON/OFF) [default: ON].
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# export: 'FC=%s' % arguments['--fc']
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# define: '-DEXTRA_FCFLAGS="%s"' % arguments['--extra-fc-flags']
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# '-DENABLE_FC_SUPPORT="%s"' % arguments['--fc-support']
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option(ENABLE_FC_SUPPORT "Enable Fortran language support" ON)
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if(ENABLE_FC_SUPPORT)
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enable_language(Fortran)
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set(CMAKE_Fortran_MODULE_DIRECTORY ${PROJECT_BINARY_DIR}/include/fortran)
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if(NOT DEFINED CMAKE_Fortran_COMPILER_ID)
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message(FATAL_ERROR "CMAKE_Fortran_COMPILER_ID variable is not defined!")
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endif()
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if(NOT CMAKE_Fortran_COMPILER_WORKS)
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message(FATAL_ERROR "CMAKE_Fortran_COMPILER_WORKS is false!")
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endif()
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if(DEFINED EXTRA_FCFLAGS)
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set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${EXTRA_FCFLAGS}")
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endif()
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if(DEFINED ENV{FCFLAGS})
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message(STATUS "FCFLAGS is set to '$ENV{FCFLAGS}'.")
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set(CMAKE_Fortran_FLAGS "$ENV{FCFLAGS}")
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endif()
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else()
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# workaround to avoid unused warning
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if(DEFINED EXTRA_FCFLAGS)
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set(_unused ${EXTRA_FCFLAGS})
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unset(_unused)
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endif()
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endif()
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