ctest_coverage([BUILD <build-dir>] [APPEND] [LABELS <label>...] [RETURN_VALUE <result-var>] [CAPTURE_CMAKE_ERROR <result-var>] [QUIET] )
ctest_coverage([BUILD <build-dir>] [APPEND] [LABELS <label>...] [RETURN_VALUE <result-var>] [CAPTURE_CMAKE_ERROR <result-var>] [QUIET] )
ctest_coverage(CAPTURE_CMAKE_ERROR err_result QUIET)
ctest_coverage(BUILD ${CTEST_BINARY_DIRECTORY} RETURN_VALUE ret_gcov CAPTURE_CMAKE_ERROR ret_gcov_cmake)
ctest_coverage ( CAPTURE_CMAKE_ERROR foo )