Merge topic 'PushCheckState'
d64ba0b Fix copyright notice test 1325260 Add macros cmake_push/pop_check_state() as discussed on the list.
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ccd4c8b202
61
Modules/CMakePushCheckState.cmake
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61
Modules/CMakePushCheckState.cmake
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# This module defines two macros:
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# CMAKE_PUSH_CHECK_STATE()
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# and
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# CMAKE_POP_CHECK_STATE()
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# These two macros can be used to save and restore the state of the variables
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# CMAKE_REQUIRED_FLAGS, CMAKE_REQUIRED_DEFINITIONS, CMAKE_REQUIRED_LIBRARIES
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# and CMAKE_REQUIRED_INCLUDES used by the various Check-files coming with CMake,
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# like e.g. check_function_exists() etc.
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# The variable contents are pushed on a stack, pushing multiple times is supported.
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# This is useful e.g. when executing such tests in a Find-module, where they have to be set,
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# but after the Find-module has been executed they should have the same value
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# as they had before.
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#
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# Usage:
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# cmake_push_check_state()
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# set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -DSOME_MORE_DEF)
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# check_function_exists(...)
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# cmake_pop_check_state()
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#=============================================================================
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# Copyright 2006-2011 Alexander Neundorf, <neundorf@kde.org>
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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MACRO(CMAKE_PUSH_CHECK_STATE)
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IF(NOT DEFINED _CMAKE_PUSH_CHECK_STATE_COUNTER)
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SET(_CMAKE_PUSH_CHECK_STATE_COUNTER 0)
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ENDIF()
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MATH(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}+1")
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SET(_CMAKE_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} ${CMAKE_REQUIRED_DEFINITIONS})
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SET(_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_LIBRARIES})
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SET(_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_FLAGS})
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ENDMACRO(CMAKE_PUSH_CHECK_STATE)
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MACRO(CMAKE_POP_CHECK_STATE)
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# don't pop more than we pushed
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IF("${_CMAKE_PUSH_CHECK_STATE_COUNTER}" GREATER "0")
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SET(CMAKE_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_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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MATH(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}-1")
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ENDIF()
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ENDMACRO(CMAKE_POP_CHECK_STATE)
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@ -28,6 +28,7 @@ AddCMakeTest(Math "")
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AddCMakeTest(CMakeMinimumRequired "")
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AddCMakeTest(CompilerIdVendor "")
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AddCMakeTest(ProcessorCount "")
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AddCMakeTest(PushCheckState "")
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AddCMakeTest(FileDownload "")
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set_property(TEST CMake.FileDownload PROPERTY
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30
Tests/CMakeTests/PushCheckStateTest.cmake.in
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30
Tests/CMakeTests/PushCheckStateTest.cmake.in
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include(CMakePushCheckState)
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set(CMAKE_REQUIRED_DEFINITIONS defs1 )
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cmake_push_check_state()
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set(CMAKE_REQUIRED_DEFINITIONS defs2)
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cmake_push_check_state()
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set(CMAKE_REQUIRED_DEFINITIONS defs3)
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cmake_pop_check_state()
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if (NOT "${CMAKE_REQUIRED_DEFINITIONS}" STREQUAL "defs2")
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set(fatal TRUE)
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message("ERROR: "CMAKE_REQUIRED_DEFINITIONS is \"${CMAKE_REQUIRED_DEFINITIONS}\" (expected \"defs2\")" )
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endif()
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cmake_pop_check_state()
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if (NOT "${CMAKE_REQUIRED_DEFINITIONS}" STREQUAL "defs1")
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set(fatal TRUE)
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message("ERROR: "CMAKE_REQUIRED_DEFINITIONS is \"${CMAKE_REQUIRED_DEFINITIONS}\" (expected \"defs1\")" )
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endif()
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if(fatal)
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message(FATAL_ERROR "cmake_push_check_state() test failed")
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endif()
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