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10 April 2024, 19:27:19 UTC
Revision 1c14691a86ab8c6939dd04707dc2a92125fa8629 authored by Raul Tambre on 07 February 2021, 09:27:21 UTC, committed by Brad King on 09 July 2021, 15:27:47 UTC 
CMakeCCompilerId: Fix C standard detection in Clang and IntelLLVM MSVC mode
 
Clang does not define `__STDC__` if in MSVC compatibility mode, but does
define `__STDC_VERSION__`.  Avoid the fallback for this combination.

This backports commit 7596d8b951 (CMakeCCompilerId: Fix C standard
detection in Clang MSVC mode, 2021-02-07, v3.21.0-rc1~587^2~14) to the
3.20 release series.  This is needed since commit 5115dd1e2c (IntelLLVM:
Fix C/C++ standard level flags on Windows, 2021-07-07, v3.21.0-rc3~7^2^2)
now that we activate C/C++ standard level logic for IntelLLVM when
targeting the MSVC ABI.
1 parent 5115dd1
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Tip revision: 1c14691a86ab8c6939dd04707dc2a92125fa8629 authored by Raul Tambre on 07 February 2021, 09:27:21 UTC
CMakeCCompilerId: Fix C standard detection in Clang and IntelLLVM MSVC mode
Tip revision: 1c14691
WriteBasicConfigVersionFile.cmake 
# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#[=======================================================================[.rst:
WriteBasicConfigVersionFile
---------------------------

.. deprecated:: 3.0

  Use the identical command :command:`write_basic_package_version_file()`
  from module :module:`CMakePackageConfigHelpers`.

::

  WRITE_BASIC_CONFIG_VERSION_FILE( filename
    [VERSION major.minor.patch]
    COMPATIBILITY (AnyNewerVersion|SameMajorVersion|SameMinorVersion|ExactVersion)
    [ARCH_INDEPENDENT]
    )


#]=======================================================================]

function(WRITE_BASIC_CONFIG_VERSION_FILE _filename)

  set(options ARCH_INDEPENDENT )
  set(oneValueArgs VERSION COMPATIBILITY )
  set(multiValueArgs )

  cmake_parse_arguments(CVF "${options}" "${oneValueArgs}" "${multiValueArgs}"  ${ARGN})

  if(CVF_UNPARSED_ARGUMENTS)
    message(FATAL_ERROR "Unknown keywords given to WRITE_BASIC_CONFIG_VERSION_FILE(): \"${CVF_UNPARSED_ARGUMENTS}\"")
  endif()

  set(versionTemplateFile "${CMAKE_ROOT}/Modules/BasicConfigVersion-${CVF_COMPATIBILITY}.cmake.in")
  if(NOT EXISTS "${versionTemplateFile}")
    message(FATAL_ERROR "Bad COMPATIBILITY value used for WRITE_BASIC_CONFIG_VERSION_FILE(): \"${CVF_COMPATIBILITY}\"")
  endif()

  if("${CVF_VERSION}" STREQUAL "")
    if ("${PROJECT_VERSION}" STREQUAL "")
      message(FATAL_ERROR "No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()")
    else()
      set(CVF_VERSION "${PROJECT_VERSION}")
    endif()
  endif()

  configure_file("${versionTemplateFile}" "${_filename}" @ONLY)

endfunction()
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