TestForSTDNamespace.cmake 1.4 KB
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# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

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#[=======================================================================[.rst:
TestForSTDNamespace
-------------------

Test for std:: namespace support

check if the compiler supports std:: on stl classes

::

  CMAKE_NO_STD_NAMESPACE - defined by the results
#]=======================================================================]
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if(NOT DEFINED CMAKE_STD_NAMESPACE)
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  message(STATUS "Check for STD namespace")
  try_compile(CMAKE_STD_NAMESPACE  ${CMAKE_BINARY_DIR}
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    ${CMAKE_ROOT}/Modules/TestForSTDNamespace.cxx
    OUTPUT_VARIABLE OUTPUT)
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  if (CMAKE_STD_NAMESPACE)
    message(STATUS "Check for STD namespace - found")
    set (CMAKE_NO_STD_NAMESPACE 0 CACHE INTERNAL
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         "Does the compiler support std::.")
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    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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      "Determining if the CXX compiler has std namespace passed with "
      "the following output:\n${OUTPUT}\n\n")
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  else ()
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    message(STATUS "Check for STD namespace - not found")
    set (CMAKE_NO_STD_NAMESPACE 1 CACHE INTERNAL
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       "Does the compiler support std::.")
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    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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      "Determining if the CXX compiler has std namespace failed with "
      "the following output:\n${OUTPUT}\n\n")
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  endif ()
endif()
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