Uploaded Test files
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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CMakePushCheckState
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-------------------
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This module defines three macros: ``CMAKE_PUSH_CHECK_STATE()``
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``CMAKE_POP_CHECK_STATE()`` and ``CMAKE_RESET_CHECK_STATE()`` These macros can
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be used to save, restore and reset (i.e., clear contents) the state of
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the variables ``CMAKE_REQUIRED_FLAGS``, ``CMAKE_REQUIRED_DEFINITIONS``,
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``CMAKE_REQUIRED_LINK_OPTIONS``, ``CMAKE_REQUIRED_LIBRARIES``,
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``CMAKE_REQUIRED_INCLUDES`` and ``CMAKE_EXTRA_INCLUDE_FILES`` used by the
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various Check-files coming with CMake, like e.g. ``check_function_exists()``
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etc.
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The variable contents are pushed on a stack, pushing multiple times is
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supported. This is useful e.g. when executing such tests in a Find-module,
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where they have to be set, but after the Find-module has been executed they
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should have the same value as they had before.
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``CMAKE_PUSH_CHECK_STATE()`` macro receives optional argument ``RESET``.
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Whether it's specified, ``CMAKE_PUSH_CHECK_STATE()`` will set all
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``CMAKE_REQUIRED_*`` variables to empty values, same as
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``CMAKE_RESET_CHECK_STATE()`` call will do.
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Usage:
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.. code-block:: cmake
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cmake_push_check_state(RESET)
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set(CMAKE_REQUIRED_DEFINITIONS -DSOME_MORE_DEF)
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check_function_exists(...)
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cmake_reset_check_state()
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set(CMAKE_REQUIRED_DEFINITIONS -DANOTHER_DEF)
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check_function_exists(...)
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cmake_pop_check_state()
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#]=======================================================================]
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macro(CMAKE_RESET_CHECK_STATE)
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set(CMAKE_EXTRA_INCLUDE_FILES)
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set(CMAKE_REQUIRED_INCLUDES)
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set(CMAKE_REQUIRED_DEFINITIONS)
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set(CMAKE_REQUIRED_LINK_OPTIONS)
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set(CMAKE_REQUIRED_LIBRARIES)
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set(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_QUIET)
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endmacro()
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macro(CMAKE_PUSH_CHECK_STATE)
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if(NOT DEFINED _CMAKE_PUSH_CHECK_STATE_COUNTER)
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set(_CMAKE_PUSH_CHECK_STATE_COUNTER 0)
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endif()
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math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}+1")
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set(_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_EXTRA_INCLUDE_FILES})
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set(_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_INCLUDES})
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set(_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_DEFINITIONS})
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set(_CMAKE_REQUIRED_LINK_OPTIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_LINK_OPTIONS})
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set(_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_LIBRARIES})
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set(_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_FLAGS})
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set(_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_QUIET})
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if (${ARGC} GREATER 0 AND "${ARGV0}" STREQUAL "RESET")
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cmake_reset_check_state()
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endif()
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endmacro()
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macro(CMAKE_POP_CHECK_STATE)
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# don't pop more than we pushed
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if("${_CMAKE_PUSH_CHECK_STATE_COUNTER}" GREATER "0")
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set(CMAKE_EXTRA_INCLUDE_FILES ${_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_INCLUDES ${_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_DEFINITIONS ${_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_LINK_OPTIONS ${_CMAKE_REQUIRED_LINK_OPTIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_LIBRARIES ${_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_FLAGS ${_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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set(CMAKE_REQUIRED_QUIET ${_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
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math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}-1")
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endif()
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endmacro()
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