Attachment 202773 Details for Bug 223678 – Replacement for FindOpenMP

Replacement for FindOpenMP

FindOpenMP.cmake (text/plain), 22.64 KB, created by Adriaan de Groot on 2019-03-10 13:04:12 UTC

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Creator: Adriaan de Groot

Created: 2019-03-10 13:04:12 UTC

Size: 22.64 KB

patch

obsolete

># Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
># file Copyright.txt or https://cmake.org/licensing for details.
>
>#.rst:
># FindOpenMP
># ----------
>#
># Finds OpenMP support
>#
># This module can be used to detect OpenMP support in a compiler.  If
># the compiler supports OpenMP, the flags required to compile with
># OpenMP support are returned in variables for the different languages.
># The variables may be empty if the compiler does not need a special
># flag to support OpenMP.
>#
># Variables
># ^^^^^^^^^
>#
># The module exposes the components ``C``, ``CXX``, and ``Fortran``.
># Each of these controls the various languages to search OpenMP support for.
>#
># Depending on the enabled components the following variables will be set:
>#
># ``OpenMP_FOUND``
>#   Variable indicating that OpenMP flags for all requested languages have been found.
>#   If no components are specified, this is true if OpenMP settings for all enabled languages
>#   were detected.
># ``OpenMP_VERSION``
>#   Minimal version of the OpenMP standard detected among the requested languages,
>#   or all enabled languages if no components were specified.
>#
># This module will set the following variables per language in your
># project, where ``<lang>`` is one of C, CXX, or Fortran:
>#
># ``OpenMP_<lang>_FOUND``
>#   Variable indicating if OpenMP support for ``<lang>`` was detected.
># ``OpenMP_<lang>_FLAGS``
>#   OpenMP compiler flags for ``<lang>``, separated by spaces.
>#
># For linking with OpenMP code written in ``<lang>``, the following
># variables are provided:
>#
># ``OpenMP_<lang>_LIB_NAMES``
>#   :ref:`;-list <CMake Language Lists>` of libraries for OpenMP programs for ``<lang>``.
># ``OpenMP_<libname>_LIBRARY``
>#   Location of the individual libraries needed for OpenMP support in ``<lang>``.
># ``OpenMP_<lang>_LIBRARIES``
>#   A list of libraries needed to link with OpenMP code written in ``<lang>``.
>#
># Additionally, the module provides :prop_tgt:`IMPORTED` targets:
>#
># ``OpenMP::OpenMP_<lang>``
>#   Target for using OpenMP from ``<lang>``.
>#
># Specifically for Fortran, the module sets the following variables:
>#
># ``OpenMP_Fortran_HAVE_OMPLIB_HEADER``
>#   Boolean indicating if OpenMP is accessible through ``omp_lib.h``.
># ``OpenMP_Fortran_HAVE_OMPLIB_MODULE``
>#   Boolean indicating if OpenMP is accessible through the ``omp_lib`` Fortran module.
>#
># The module will also try to provide the OpenMP version variables:
>#
># ``OpenMP_<lang>_SPEC_DATE``
>#   Date of the OpenMP specification implemented by the ``<lang>`` compiler.
># ``OpenMP_<lang>_VERSION_MAJOR``
>#   Major version of OpenMP implemented by the ``<lang>`` compiler.
># ``OpenMP_<lang>_VERSION_MINOR``
>#   Minor version of OpenMP implemented by the ``<lang>`` compiler.
># ``OpenMP_<lang>_VERSION``
>#   OpenMP version implemented by the ``<lang>`` compiler.
>#
># The specification date is formatted as given in the OpenMP standard:
># ``yyyymm`` where ``yyyy`` and ``mm`` represents the year and month of
># the OpenMP specification implemented by the ``<lang>`` compiler.
>
>cmake_policy(PUSH)
>cmake_policy(SET CMP0012 NEW) # if() recognizes numbers and booleans
>cmake_policy(SET CMP0054 NEW) # if() quoted variables not dereferenced
>cmake_policy(SET CMP0057 NEW) # if IN_LIST
>
>set(OpenMP_pthread_LIBRARY -lpthread)
>
>find_file(_path_to_omp_h omp.h)
>if(NOT _path_to_omp_h)
>  find_file(_path_to_omp_h omp.h
>    HINTS ${ENV{LOCALBASE}}/include /usr/local/include)
>endif()
>if(_path_to_omp_h)
>  get_filename_component(OpenMP_INCLUDE_DIR ${_path_to_omp_h} DIRECTORY)
>else()
>  set(OpenMP_INCLUDE_DIR)
>endif()
>
>find_library(_path_to_omp_lib omp)
>if(NOT _path_to_omp_lib)
>  find_library(_path_to_omp_lib omp
>    PATHS ${ENV{LOCALBASE}}/lib /usr/local/lib)
>endif()
>if(_path_to_omp_lib)
>  get_filename_component(OpenMP_LIB_DIR ${_path_to_omp_lib} DIRECTORY)
>else()
>  set(OpenMP_LIB_DIR)
>endif()
>
>function(_OPENMP_FLAG_CANDIDATES LANG)
>  if(NOT OpenMP_${LANG}_FLAG)
>    unset(OpenMP_FLAG_CANDIDATES)
>
>    set(OMP_FLAG_GNU "-fopenmp")
>    set(OMP_FLAG_Clang "-fopenmp=libomp" "-fopenmp=libiomp5" "-fopenmp")
>    set(OMP_FLAG_AppleClang "-Xclang -fopenmp")
>    set(OMP_FLAG_HP "+Oopenmp")
>    if(WIN32)
>      set(OMP_FLAG_Intel "-Qopenmp")
>    elseif(CMAKE_${LANG}_COMPILER_ID STREQUAL "Intel" AND
>           "${CMAKE_${LANG}_COMPILER_VERSION}" VERSION_LESS "15.0.0.20140528")
>      set(OMP_FLAG_Intel "-openmp")
>    else()
>      set(OMP_FLAG_Intel "-qopenmp")
>    endif()
>    set(OMP_FLAG_MIPSpro "-mp")
>    set(OMP_FLAG_MSVC "-openmp")
>    set(OMP_FLAG_PathScale "-openmp")
>    set(OMP_FLAG_NAG "-openmp")
>    set(OMP_FLAG_Absoft "-openmp")
>    set(OMP_FLAG_PGI "-mp")
>    set(OMP_FLAG_Flang "-fopenmp")
>    set(OMP_FLAG_SunPro "-xopenmp")
>    set(OMP_FLAG_XL "-qsmp=omp")
>    # Cray compiler activate OpenMP with -h omp, which is enabled by default.
>    set(OMP_FLAG_Cray " " "-h omp")
>
>    # If we know the correct flags, use those
>    if(DEFINED OMP_FLAG_${CMAKE_${LANG}_COMPILER_ID})
>      set(OpenMP_FLAG_CANDIDATES "${OMP_FLAG_${CMAKE_${LANG}_COMPILER_ID}}")
>    # Fall back to reasonable default tries otherwise
>    else()
>      set(OpenMP_FLAG_CANDIDATES "-openmp" "-fopenmp" "-mp" " ")
>    endif()
>    set(OpenMP_${LANG}_FLAG_CANDIDATES "${OpenMP_FLAG_CANDIDATES}" PARENT_SCOPE)
>  else()
>    set(OpenMP_${LANG}_FLAG_CANDIDATES "${OpenMP_${LANG}_FLAG}" PARENT_SCOPE)
>  endif()
>endfunction()
>
># sample openmp source code to test
>set(OpenMP_C_CXX_TEST_SOURCE
>"
>#include <omp.h>
>int main(void) {
>#ifdef _OPENMP
>  omp_get_max_threads();
>  return 0;
>#else
>  breaks_on_purpose
>#endif
>}
>")
>
># in Fortran, an implementation may provide an omp_lib.h header
># or omp_lib module, or both (OpenMP standard, section 3.1)
># Furthmore !$ is the Fortran equivalent of #ifdef _OPENMP (OpenMP standard, 2.2.2)
># Without the conditional compilation, some compilers (e.g. PGI) might compile OpenMP code
># while not actually enabling OpenMP, building code sequentially
>set(OpenMP_Fortran_TEST_SOURCE
>  "
>      program test
>      @OpenMP_Fortran_INCLUDE_LINE@
>  !$  integer :: n
>      n = omp_get_num_threads()
>      end program test
>  "
>)
>
>function(_OPENMP_WRITE_SOURCE_FILE LANG SRC_FILE_CONTENT_VAR SRC_FILE_NAME SRC_FILE_FULLPATH)
>  set(WORK_DIR ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindOpenMP)
>  if("${LANG}" STREQUAL "C")
>    set(SRC_FILE "${WORK_DIR}/${SRC_FILE_NAME}.c")
>    file(WRITE "${SRC_FILE}" "${OpenMP_C_CXX_${SRC_FILE_CONTENT_VAR}}")
>  elseif("${LANG}" STREQUAL "CXX")
>    set(SRC_FILE "${WORK_DIR}/${SRC_FILE_NAME}.cpp")
>    file(WRITE "${SRC_FILE}" "${OpenMP_C_CXX_${SRC_FILE_CONTENT_VAR}}")
>  elseif("${LANG}" STREQUAL "Fortran")
>    set(SRC_FILE "${WORK_DIR}/${SRC_FILE_NAME}.f90")
>    file(WRITE "${SRC_FILE}_in" "${OpenMP_Fortran_${SRC_FILE_CONTENT_VAR}}")
>    configure_file("${SRC_FILE}_in" "${SRC_FILE}" @ONLY)
>  endif()
>  set(${SRC_FILE_FULLPATH} "${SRC_FILE}" PARENT_SCOPE)
>endfunction()
>
>include(${CMAKE_CURRENT_LIST_DIR}/CMakeParseImplicitLinkInfo.cmake)
>
>function(_OPENMP_GET_FLAGS LANG FLAG_MODE OPENMP_FLAG_VAR OPENMP_LIB_NAMES_VAR)
>  _OPENMP_FLAG_CANDIDATES("${LANG}")
>  _OPENMP_WRITE_SOURCE_FILE("${LANG}" "TEST_SOURCE" OpenMPTryFlag _OPENMP_TEST_SRC)
>
>  unset(OpenMP_VERBOSE_COMPILE_OPTIONS)
>  separate_arguments(OpenMP_VERBOSE_OPTIONS NATIVE_COMMAND "${CMAKE_${LANG}_VERBOSE_FLAG}")
>  foreach(_VERBOSE_OPTION IN LISTS OpenMP_VERBOSE_OPTIONS)
>    if(NOT _VERBOSE_OPTION MATCHES "^-Wl,")
>      list(APPEND OpenMP_VERBOSE_COMPILE_OPTIONS ${_VERBOSE_OPTION})
>    endif()
>  endforeach()
>
>  foreach(OPENMP_FLAG IN LISTS OpenMP_${LANG}_FLAG_CANDIDATES)
>    set(OPENMP_FLAGS_TEST "${OPENMP_FLAG}")
>    if(OpenMP_VERBOSE_COMPILE_OPTIONS)
>      string(APPEND OPENMP_FLAGS_TEST " ${OpenMP_VERBOSE_COMPILE_OPTIONS}")
>    endif()
>    set(_extra_flag "")
>    if(OpenMP_INCLUDE_DIR)
>      string(APPEND _extra_flag " -I${OpenMP_INCLUDE_DIR}")
>    endif()
>    if(OpenMP_LIB_DIR)
>      string(APPEND _extra_flag " -L${OpenMP_LIB_DIR}")
>    endif()
>
>    string(REGEX REPLACE "[-/=+]" "" OPENMP_PLAIN_FLAG "${OPENMP_FLAG}")
>    try_compile( OpenMP_COMPILE_RESULT_${FLAG_MODE}_${OPENMP_PLAIN_FLAG} ${CMAKE_BINARY_DIR} ${_OPENMP_TEST_SRC}
>      CMAKE_FLAGS "-DCOMPILE_DEFINITIONS:STRING=${OPENMP_FLAGS_TEST} ${_extra_flag}"
>      LINK_LIBRARIES ${CMAKE_${LANG}_VERBOSE_FLAG}
>      OUTPUT_VARIABLE OpenMP_TRY_COMPILE_OUTPUT
>    )
>
>    if(OpenMP_COMPILE_RESULT_${FLAG_MODE}_${OPENMP_PLAIN_FLAG})
>      set("${OPENMP_FLAG_VAR}" "${OPENMP_FLAG} ${_extra_flag}" PARENT_SCOPE)
>
>      if(CMAKE_${LANG}_VERBOSE_FLAG)
>        unset(OpenMP_${LANG}_IMPLICIT_LIBRARIES)
>        unset(OpenMP_${LANG}_IMPLICIT_LINK_DIRS)
>        unset(OpenMP_${LANG}_IMPLICIT_FWK_DIRS)
>        unset(OpenMP_${LANG}_LOG_VAR)
>
>        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
>        "Detecting ${LANG} OpenMP compiler ABI info compiled with the following output:\n${OpenMP_TRY_COMPILE_OUTPUT}\n\n")
>
>        cmake_parse_implicit_link_info("${OpenMP_TRY_COMPILE_OUTPUT}"
>          OpenMP_${LANG}_IMPLICIT_LIBRARIES
>          OpenMP_${LANG}_IMPLICIT_LINK_DIRS
>          OpenMP_${LANG}_IMPLICIT_FWK_DIRS
>          OpenMP_${LANG}_LOG_VAR
>          "${CMAKE_${LANG}_IMPLICIT_OBJECT_REGEX}"
>        )
>
>        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
>        "Parsed ${LANG} OpenMP implicit link information from above output:\n${OpenMP_${LANG}_LOG_VAR}\n\n")
>
>        unset(_OPENMP_LIB_NAMES)
>        foreach(_OPENMP_IMPLICIT_LIB IN LISTS OpenMP_${LANG}_IMPLICIT_LIBRARIES)
>          get_filename_component(_OPENMP_IMPLICIT_LIB_DIR "${_OPENMP_IMPLICIT_LIB}" DIRECTORY)
>          get_filename_component(_OPENMP_IMPLICIT_LIB_NAME "${_OPENMP_IMPLICIT_LIB}" NAME)
>          get_filename_component(_OPENMP_IMPLICIT_LIB_PLAIN "${_OPENMP_IMPLICIT_LIB}" NAME_WE)
>          string(REGEX REPLACE "([][+.*?()^$])" "\\\\\\1" _OPENMP_IMPLICIT_LIB_PLAIN_ESC "${_OPENMP_IMPLICIT_LIB_PLAIN}")
>          string(REGEX REPLACE "([][+.*?()^$])" "\\\\\\1" _OPENMP_IMPLICIT_LIB_PATH_ESC "${_OPENMP_IMPLICIT_LIB}")
>          if(NOT ( "${_OPENMP_IMPLICIT_LIB}" IN_LIST CMAKE_${LANG}_IMPLICIT_LINK_LIBRARIES
>            OR "${CMAKE_${LANG}_STANDARD_LIBRARIES}" MATCHES "(^| )(-Wl,)?(-l)?(${_OPENMP_IMPLICIT_LIB_PLAIN_ESC}|${_OPENMP_IMPLICIT_LIB_PATH_ESC})( |$)"
>            OR "${CMAKE_${LANG}_LINK_EXECUTABLE}" MATCHES "(^| )(-Wl,)?(-l)?(${_OPENMP_IMPLICIT_LIB_PLAIN_ESC}|${_OPENMP_IMPLICIT_LIB_PATH_ESC})( |$)" ) )
>            if(_OPENMP_IMPLICIT_LIB_DIR)
>              set(OpenMP_${_OPENMP_IMPLICIT_LIB_PLAIN}_LIBRARY "${_OPENMP_IMPLICIT_LIB}" CACHE FILEPATH
>                "Path to the ${_OPENMP_IMPLICIT_LIB_PLAIN} library for OpenMP")
>            else()
>              find_library(OpenMP_${_OPENMP_IMPLICIT_LIB_PLAIN}_LIBRARY
>                NAMES "${_OPENMP_IMPLICIT_LIB_NAME}"
>                DOC "Path to the ${_OPENMP_IMPLICIT_LIB_PLAIN} library for OpenMP"
>                HINTS ${OpenMP_${LANG}_IMPLICIT_LINK_DIRS}
>                CMAKE_FIND_ROOT_PATH_BOTH
>                NO_DEFAULT_PATH
>              )
>            endif()
>            mark_as_advanced(OpenMP_${_OPENMP_IMPLICIT_LIB_PLAIN}_LIBRARY)
>            list(APPEND _OPENMP_LIB_NAMES ${_OPENMP_IMPLICIT_LIB_PLAIN})
>          endif()
>        endforeach()
>        set("${OPENMP_LIB_NAMES_VAR}" "${_OPENMP_LIB_NAMES}" PARENT_SCOPE)
>      else()
>        # We do not know how to extract implicit OpenMP libraries for this compiler.
>        # Assume that it handles them automatically, e.g. the Intel Compiler on
>        # Windows should put the dependency in its object files.
>        set("${OPENMP_LIB_NAMES_VAR}" "" PARENT_SCOPE)
>      endif()
>      break()
>    elseif(CMAKE_${LANG}_COMPILER_ID STREQUAL "AppleClang"
>      AND CMAKE_${LANG}_COMPILER_VERSION VERSION_GREATER_EQUAL "7.0")
>
>      # Check for separate OpenMP library on AppleClang 7+
>      find_library(OpenMP_libomp_LIBRARY
>        NAMES omp gomp iomp5
>        HINTS ${CMAKE_${LANG}_IMPLICIT_LINK_DIRECTORIES}
>      )
>      mark_as_advanced(OpenMP_libomp_LIBRARY)
>
>      if(OpenMP_libomp_LIBRARY)
>        try_compile( OpenMP_COMPILE_RESULT_${FLAG_MODE}_${OPENMP_PLAIN_FLAG} ${CMAKE_BINARY_DIR} ${_OPENMP_TEST_SRC}
>          CMAKE_FLAGS "-DCOMPILE_DEFINITIONS:STRING=${OPENMP_FLAGS_TEST}"
>          LINK_LIBRARIES ${CMAKE_${LANG}_VERBOSE_FLAG} ${OpenMP_libomp_LIBRARY}
>          OUTPUT_VARIABLE OpenMP_TRY_COMPILE_OUTPUT
>        )
>        if(OpenMP_COMPILE_RESULT_${FLAG_MODE}_${OPENMP_PLAIN_FLAG})
>          set("${OPENMP_FLAG_VAR}" "${OPENMP_FLAG}" PARENT_SCOPE)
>          set("${OPENMP_LIB_NAMES_VAR}" "libomp" PARENT_SCOPE)
>          break()
>        endif()
>      endif()
>    else()
>      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
>        "Detecting ${LANG} OpenMP failed with the following output:\n${OpenMP_TRY_COMPILE_OUTPUT}\n\n")
>    endif()
>    set("${OPENMP_LIB_NAMES_VAR}" "NOTFOUND" PARENT_SCOPE)
>    set("${OPENMP_FLAG_VAR}" "NOTFOUND" PARENT_SCOPE)
>  endforeach()
>
>  unset(OpenMP_VERBOSE_COMPILE_OPTIONS)
>endfunction()
>
>set(OpenMP_C_CXX_CHECK_VERSION_SOURCE
>"
>#include <stdio.h>
>#include <omp.h>
>const char ompver_str[] = { 'I', 'N', 'F', 'O', ':', 'O', 'p', 'e', 'n', 'M',
>                            'P', '-', 'd', 'a', 't', 'e', '[',
>                            ('0' + ((_OPENMP/100000)%10)),
>                            ('0' + ((_OPENMP/10000)%10)),
>                            ('0' + ((_OPENMP/1000)%10)),
>                            ('0' + ((_OPENMP/100)%10)),
>                            ('0' + ((_OPENMP/10)%10)),
>                            ('0' + ((_OPENMP/1)%10)),
>                            ']', '\\0' };
>int main(void)
>{
>  puts(ompver_str);
>  return 0;
>}
>")
>
>set(OpenMP_Fortran_CHECK_VERSION_SOURCE
>"
>      program omp_ver
>      @OpenMP_Fortran_INCLUDE_LINE@
>      integer, parameter :: zero = ichar('0')
>      integer, parameter :: ompv = openmp_version
>      character, dimension(24), parameter :: ompver_str =&
>      (/ 'I', 'N', 'F', 'O', ':', 'O', 'p', 'e', 'n', 'M', 'P', '-',&
>         'd', 'a', 't', 'e', '[',&
>         char(zero + mod(ompv/100000, 10)),&
>         char(zero + mod(ompv/10000, 10)),&
>         char(zero + mod(ompv/1000, 10)),&
>         char(zero + mod(ompv/100, 10)),&
>         char(zero + mod(ompv/10, 10)),&
>         char(zero + mod(ompv/1, 10)), ']' /)
>      print *, ompver_str
>      end program omp_ver
>")
>
>function(_OPENMP_GET_SPEC_DATE LANG SPEC_DATE)
>  _OPENMP_WRITE_SOURCE_FILE("${LANG}" "CHECK_VERSION_SOURCE" OpenMPCheckVersion _OPENMP_TEST_SRC)
>
>  set(BIN_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindOpenMP/ompver_${LANG}.bin")
>  string(REGEX REPLACE "[-/=+]" "" OPENMP_PLAIN_FLAG "${OPENMP_FLAG}")
>  try_compile(OpenMP_SPECTEST_${LANG}_${OPENMP_PLAIN_FLAG} "${CMAKE_BINARY_DIR}" "${_OPENMP_TEST_SRC}"
>              CMAKE_FLAGS "-DCOMPILE_DEFINITIONS:STRING=${OpenMP_${LANG}_FLAGS}"
>              COPY_FILE ${BIN_FILE}
>              OUTPUT_VARIABLE OpenMP_TRY_COMPILE_OUTPUT)
>
>  if(${OpenMP_SPECTEST_${LANG}_${OPENMP_PLAIN_FLAG}})
>    file(STRINGS ${BIN_FILE} specstr LIMIT_COUNT 1 REGEX "INFO:OpenMP-date")
>    set(regex_spec_date ".*INFO:OpenMP-date\\[0*([^]]*)\\].*")
>    if("${specstr}" MATCHES "${regex_spec_date}")
>      set(${SPEC_DATE} "${CMAKE_MATCH_1}" PARENT_SCOPE)
>    endif()
>  else()
>    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
>        "Detecting ${LANG} OpenMP version failed with the following output:\n${OpenMP_TRY_COMPILE_OUTPUT}\n\n")
>  endif()
>endfunction()
>
>macro(_OPENMP_SET_VERSION_BY_SPEC_DATE LANG)
>  set(OpenMP_SPEC_DATE_MAP
>    # Preview versions
>    "201611=5.0" # OpenMP 5.0 preview 1
>    # Combined versions, 2.5 onwards
>    "201511=4.5"
>    "201307=4.0"
>    "201107=3.1"
>    "200805=3.0"
>    "200505=2.5"
>    # C/C++ version 2.0
>    "200203=2.0"
>    # Fortran version 2.0
>    "200011=2.0"
>    # Fortran version 1.1
>    "199911=1.1"
>    # C/C++ version 1.0 (there's no 1.1 for C/C++)
>    "199810=1.0"
>    # Fortran version 1.0
>    "199710=1.0"
>  )
>
>  if(OpenMP_${LANG}_SPEC_DATE)
>    string(REGEX MATCHALL "${OpenMP_${LANG}_SPEC_DATE}=([0-9]+)\\.([0-9]+)" _version_match "${OpenMP_SPEC_DATE_MAP}")
>  else()
>    set(_version_match "")
>  endif()
>  if(NOT _version_match STREQUAL "")
>    set(OpenMP_${LANG}_VERSION_MAJOR ${CMAKE_MATCH_1})
>    set(OpenMP_${LANG}_VERSION_MINOR ${CMAKE_MATCH_2})
>    set(OpenMP_${LANG}_VERSION "${OpenMP_${LANG}_VERSION_MAJOR}.${OpenMP_${LANG}_VERSION_MINOR}")
>  else()
>    unset(OpenMP_${LANG}_VERSION_MAJOR)
>    unset(OpenMP_${LANG}_VERSION_MINOR)
>    unset(OpenMP_${LANG}_VERSION)
>  endif()
>  unset(_version_match)
>  unset(OpenMP_SPEC_DATE_MAP)
>endmacro()
>
>foreach(LANG IN ITEMS C CXX)
>  if(CMAKE_${LANG}_COMPILER_LOADED)
>    if(NOT DEFINED OpenMP_${LANG}_FLAGS OR "${OpenMP_${LANG}_FLAGS}" STREQUAL "NOTFOUND"
>      OR NOT DEFINED OpenMP_${LANG}_LIB_NAMES OR "${OpenMP_${LANG}_LIB_NAMES}" STREQUAL "NOTFOUND")
>      _OPENMP_GET_FLAGS("${LANG}" "${LANG}" OpenMP_${LANG}_FLAGS_WORK OpenMP_${LANG}_LIB_NAMES_WORK)
>    endif()
>
>    set(OpenMP_${LANG}_FLAGS "${OpenMP_${LANG}_FLAGS_WORK}"
>      CACHE STRING "${LANG} compiler flags for OpenMP parallelization")
>    set(OpenMP_${LANG}_LIB_NAMES "${OpenMP_${LANG}_LIB_NAMES_WORK}"
>      CACHE STRING "${LANG} compiler libraries for OpenMP parallelization")
>    mark_as_advanced(OpenMP_${LANG}_FLAGS OpenMP_${LANG}_LIB_NAMES)
>  endif()
>endforeach()
>
>if(CMAKE_Fortran_COMPILER_LOADED)
>  if(NOT DEFINED OpenMP_Fortran_FLAGS OR "${OpenMP_Fortran_FLAGS}" STREQUAL "NOTFOUND"
>    OR NOT DEFINED OpenMP_Fortran_LIB_NAMES OR "${OpenMP_Fortran_LIB_NAMES}" STREQUAL "NOTFOUND"
>    OR NOT DEFINED OpenMP_Fortran_HAVE_OMPLIB_MODULE)
>    set(OpenMP_Fortran_INCLUDE_LINE "use omp_lib\n      implicit none")
>    _OPENMP_GET_FLAGS("Fortran" "FortranHeader" OpenMP_Fortran_FLAGS_WORK OpenMP_Fortran_LIB_NAMES_WORK)
>    if(OpenMP_Fortran_FLAGS_WORK)
>      set(OpenMP_Fortran_HAVE_OMPLIB_MODULE TRUE CACHE BOOL INTERNAL "")
>    endif()
>
>    set(OpenMP_Fortran_FLAGS "${OpenMP_Fortran_FLAGS_WORK}"
>      CACHE STRING "Fortran compiler flags for OpenMP parallelization")
>    set(OpenMP_Fortran_LIB_NAMES "${OpenMP_Fortran_LIB_NAMES_WORK}"
>      CACHE STRING "Fortran compiler libraries for OpenMP parallelization")
>    mark_as_advanced(OpenMP_Fortran_FLAGS OpenMP_Fortran_LIB_NAMES)
>  endif()
>
>  if(NOT DEFINED OpenMP_Fortran_FLAGS OR "${OpenMP_Fortran_FLAGS}" STREQUAL "NOTFOUND"
>    OR NOT DEFINED OpenMP_Fortran_LIB_NAMES OR "${OpenMP_Fortran_LIB_NAMES}" STREQUAL "NOTFOUND"
>    OR NOT DEFINED OpenMP_Fortran_HAVE_OMPLIB_HEADER)
>    set(OpenMP_Fortran_INCLUDE_LINE "implicit none\n      include 'omp_lib.h'")
>    _OPENMP_GET_FLAGS("Fortran" "FortranModule" OpenMP_Fortran_FLAGS_WORK OpenMP_Fortran_LIB_NAMES_WORK)
>    if(OpenMP_Fortran_FLAGS_WORK)
>      set(OpenMP_Fortran_HAVE_OMPLIB_HEADER TRUE CACHE BOOL INTERNAL "")
>    endif()
>
>    set(OpenMP_Fortran_FLAGS "${OpenMP_Fortran_FLAGS_WORK}"
>      CACHE STRING "Fortran compiler flags for OpenMP parallelization")
>
>    set(OpenMP_Fortran_LIB_NAMES "${OpenMP_Fortran_LIB_NAMES}"
>      CACHE STRING "Fortran compiler libraries for OpenMP parallelization")
>  endif()
>
>  if(OpenMP_Fortran_HAVE_OMPLIB_MODULE)
>    set(OpenMP_Fortran_INCLUDE_LINE "use omp_lib\n      implicit none")
>  else()
>    set(OpenMP_Fortran_INCLUDE_LINE "implicit none\n      include 'omp_lib.h'")
>  endif()
>endif()
>
>if(NOT OpenMP_FIND_COMPONENTS)
>  set(OpenMP_FINDLIST C CXX Fortran)
>else()
>  set(OpenMP_FINDLIST ${OpenMP_FIND_COMPONENTS})
>endif()
>
>unset(_OpenMP_MIN_VERSION)
>
>include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
>if(NOT OpenMP_FIND_QUIETLY)
>  message(STATUS "OpenMP includes  ${OpenMP_INCLUDE_DIR}")
>  message(STATUS "OpenMP libraries ${OpenMP_LIB_DIR}")
>endif()
>
>foreach(LANG IN LISTS OpenMP_FINDLIST)
>  if(CMAKE_${LANG}_COMPILER_LOADED)
>    if (NOT OpenMP_${LANG}_SPEC_DATE AND OpenMP_${LANG}_FLAGS)
>      _OPENMP_GET_SPEC_DATE("${LANG}" OpenMP_${LANG}_SPEC_DATE_INTERNAL)
>      set(OpenMP_${LANG}_SPEC_DATE "${OpenMP_${LANG}_SPEC_DATE_INTERNAL}" CACHE
>        INTERNAL "${LANG} compiler's OpenMP specification date")
>      _OPENMP_SET_VERSION_BY_SPEC_DATE("${LANG}")
>    endif()
>
>    set(OpenMP_${LANG}_FIND_QUIETLY ${OpenMP_FIND_QUIETLY})
>    set(OpenMP_${LANG}_FIND_REQUIRED ${OpenMP_FIND_REQUIRED})
>    set(OpenMP_${LANG}_FIND_VERSION ${OpenMP_FIND_VERSION})
>    set(OpenMP_${LANG}_FIND_VERSION_EXACT ${OpenMP_FIND_VERSION_EXACT})
>
>    set(_OPENMP_${LANG}_REQUIRED_VARS OpenMP_${LANG}_FLAGS)
>    if("${OpenMP_${LANG}_LIB_NAMES}" STREQUAL "NOTFOUND")
>      set(_OPENMP_${LANG}_REQUIRED_LIB_VARS OpenMP_${LANG}_LIB_NAMES)
>    else()
>      foreach(_OPENMP_IMPLICIT_LIB IN LISTS OpenMP_${LANG}_LIB_NAMES)
>        list(APPEND _OPENMP_${LANG}_REQUIRED_LIB_VARS OpenMP_${_OPENMP_IMPLICIT_LIB}_LIBRARY)
>      endforeach()
>    endif()
>
>    find_package_handle_standard_args(OpenMP_${LANG}
>      REQUIRED_VARS OpenMP_${LANG}_FLAGS ${_OPENMP_${LANG}_REQUIRED_LIB_VARS}
>      VERSION_VAR OpenMP_${LANG}_VERSION
>    )
>
>    if(OpenMP_${LANG}_FOUND)
>      if(DEFINED OpenMP_${LANG}_VERSION)
>        if(NOT _OpenMP_MIN_VERSION OR _OpenMP_MIN_VERSION VERSION_GREATER OpenMP_${LANG}_VERSION)
>          set(_OpenMP_MIN_VERSION OpenMP_${LANG}_VERSION)
>        endif()
>      endif()
>      set(OpenMP_${LANG}_LIBRARIES "")
>      foreach(_OPENMP_IMPLICIT_LIB IN LISTS OpenMP_${LANG}_LIB_NAMES)
>        list(APPEND OpenMP_${LANG}_LIBRARIES "${OpenMP_${_OPENMP_IMPLICIT_LIB}_LIBRARY}")
>      endforeach()
>
>      if(NOT TARGET OpenMP::OpenMP_${LANG})
>        add_library(OpenMP::OpenMP_${LANG} INTERFACE IMPORTED)
>      endif()
>      if(OpenMP_${LANG}_FLAGS)
>        separate_arguments(_OpenMP_${LANG}_OPTIONS NATIVE_COMMAND "${OpenMP_${LANG}_FLAGS}")
>        set_property(TARGET OpenMP::OpenMP_${LANG} PROPERTY
>          INTERFACE_COMPILE_OPTIONS "$<$<COMPILE_LANGUAGE:${LANG}>:${_OpenMP_${LANG}_OPTIONS}>")
>        unset(_OpenMP_${LANG}_OPTIONS)
>      endif()
>      if(OpenMP_${LANG}_LIBRARIES)
>        set_property(TARGET OpenMP::OpenMP_${LANG} PROPERTY
>          INTERFACE_LINK_LIBRARIES "${OpenMP_${LANG}_LIBRARIES}")
>      endif()
>    endif()
>  endif()
>endforeach()
>
>unset(_OpenMP_REQ_VARS)
>foreach(LANG IN ITEMS C CXX Fortran)
>  if((NOT OpenMP_FIND_COMPONENTS AND CMAKE_${LANG}_COMPILER_LOADED) OR LANG IN_LIST OpenMP_FIND_COMPONENTS)
>    list(APPEND _OpenMP_REQ_VARS "OpenMP_${LANG}_FOUND")
>  endif()
>endforeach()
>
>find_package_handle_standard_args(OpenMP
>    REQUIRED_VARS ${_OpenMP_REQ_VARS}
>    VERSION_VAR ${_OpenMP_MIN_VERSION}
>    HANDLE_COMPONENTS)
>
>set(OPENMP_FOUND ${OpenMP_FOUND})
>
>if(CMAKE_Fortran_COMPILER_LOADED AND OpenMP_Fortran_FOUND)
>  if(NOT DEFINED OpenMP_Fortran_HAVE_OMPLIB_MODULE)
>    set(OpenMP_Fortran_HAVE_OMPLIB_MODULE FALSE CACHE BOOL INTERNAL "")
>  endif()
>  if(NOT DEFINED OpenMP_Fortran_HAVE_OMPLIB_HEADER)
>    set(OpenMP_Fortran_HAVE_OMPLIB_HEADER FALSE CACHE BOOL INTERNAL "")
>  endif()
>endif()
>
>if(NOT ( CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED OR CMAKE_Fortran_COMPILER_LOADED ))
>  message(SEND_ERROR "FindOpenMP requires the C, CXX or Fortran languages to be enabled")
>endif()
>
>unset(OpenMP_C_CXX_TEST_SOURCE)
>unset(OpenMP_Fortran_TEST_SOURCE)
>unset(OpenMP_C_CXX_CHECK_VERSION_SOURCE)
>unset(OpenMP_Fortran_CHECK_VERSION_SOURCE)
>unset(OpenMP_Fortran_INCLUDE_LINE)
>
>cmake_policy(POP)

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Attachments on bug 223678: 202773 | 202774 | 202785 | 202786