forked from OSchip/llvm-project
74 lines
2.7 KiB
CMake
74 lines
2.7 KiB
CMake
#
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#//===----------------------------------------------------------------------===//
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#//
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#// The LLVM Compiler Infrastructure
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#//
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#// This file is dual licensed under the MIT and the University of Illinois Open
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#// Source Licenses. See LICENSE.txt for details.
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#//
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#//===----------------------------------------------------------------------===//
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#
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# Checking a fortran compiler flag
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# There is no real trivial way to do this in CMake, so we implement it here
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# this will have ${boolean} = TRUE if the flag succeeds, otherwise false.
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function(libomp_check_fortran_flag flag boolean)
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if(NOT DEFINED "${boolean}")
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set(retval TRUE)
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set(fortran_source
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" program hello
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print *, \"Hello World!\"
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end program hello")
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set(failed_regexes "[Ee]rror;[Uu]nknown;[Ss]kipping")
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if(CMAKE_VERSION VERSION_GREATER 3.1 OR CMAKE_VERSION VERSION_EQUAL 3.1)
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include(CheckFortranSourceCompiles)
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check_fortran_source_compiles("${fortran_source}" ${boolean} FAIL_REGEX "${failed_regexes}")
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set(${boolean} ${${boolean}} PARENT_SCOPE)
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return()
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else()
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# Our manual check for cmake versions that don't have CheckFortranSourceCompiles
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set(base_dir ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/fortran_flag_check)
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file(MAKE_DIRECTORY ${base_dir})
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file(WRITE ${base_dir}/fortran_source.f "${fortran_source}")
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message(STATUS "Performing Test ${boolean}")
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execute_process(
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COMMAND ${CMAKE_Fortran_COMPILER} "${flag}" ${base_dir}/fortran_source.f
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WORKING_DIRECTORY ${base_dir}
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RESULT_VARIABLE exit_code
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OUTPUT_VARIABLE OUTPUT
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ERROR_VARIABLE OUTPUT
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)
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if(${exit_code} EQUAL 0)
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foreach(regex IN LISTS failed_regexes)
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if("${OUTPUT}" MATCHES ${regex})
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set(retval FALSE)
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endif()
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endforeach()
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else()
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set(retval FALSE)
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endif()
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if(${retval})
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set(${boolean} 1 CACHE INTERNAL "Test ${boolean}")
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message(STATUS "Performing Test ${boolean} - Success")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Performing Fortran Compiler Flag test ${boolean} succeeded with the following output:\n"
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"${OUTPUT}\n"
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"Source file was:\n${fortran_source}\n")
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else()
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set(${boolean} "" CACHE INTERNAL "Test ${boolean}")
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message(STATUS "Performing Test ${boolean} - Failed")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Performing Fortran Compiler Flag test ${boolean} failed with the following output:\n"
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"${OUTPUT}\n"
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"Source file was:\n${fortran_source}\n")
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endif()
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endif()
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set(${boolean} ${retval} PARENT_SCOPE)
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endif()
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endfunction()
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