#.rst:
#
# Enables code coverage by appending corresponding compiler flags.
#
# Variables modified (provided the corresponding language is enabled)::
#
#   CMAKE_Fortran_FLAGS
#   CMAKE_C_FLAGS
#   CMAKE_CXX_FLAGS
#
# Example autocmake.cfg entry::
#
#   [coverage]
#   source: https://github.com/scisoft/autocmake/raw/master/modules/code_coverage.cmake
#   docopt: --coverage Enable code coverage [default: False].
#   define: '-DENABLE_CODE_COVERAGE=%s' % arguments['--coverage']

option(ENABLE_CODE_COVERAGE "Enable code coverage" OFF)

if(ENABLE_CODE_COVERAGE)
    if(DEFINED CMAKE_Fortran_COMPILER_ID)
        if(CMAKE_Fortran_COMPILER_ID MATCHES GNU)
            set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage")
        endif()
    endif()

    if(DEFINED CMAKE_C_COMPILER_ID)
        if(CMAKE_C_COMPILER_ID MATCHES GNU)
            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
        endif()
    endif()

    if(DEFINED CMAKE_CXX_COMPILER_ID)
        if(CMAKE_CXX_COMPILER_ID MATCHES GNU)
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
        endif()
        if(CMAKE_CXX_COMPILER_ID MATCHES Clang)
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
        endif()
    endif()
endif()