diff options
| -rw-r--r-- | Modules/CMakePushCheckState.cmake | 52 | ||||
| -rw-r--r-- | Tests/CMakeTests/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | Tests/CMakeTests/PushCheckStateTest.cmake.in | 30 |
3 files changed, 83 insertions, 0 deletions
diff --git a/Modules/CMakePushCheckState.cmake b/Modules/CMakePushCheckState.cmake new file mode 100644 index 0000000..52503e5 --- /dev/null +++ b/Modules/CMakePushCheckState.cmake @@ -0,0 +1,52 @@ +# This module defines two macros: +# CMAKE_PUSH_CHECK_STATE() +# and +# CMAKE_POP_CHECK_STATE() +# These two macros can be used to save and restore the state of the variables +# CMAKE_REQUIRED_FLAGS, CMAKE_REQUIRED_DEFINITIONS, CMAKE_REQUIRED_LIBRARIES +# and CMAKE_REQUIRED_INCLUDES used by the various Check-files coming with CMake, +# like e.g. check_function_exists() etc. +# The variable contents are pushed on a stack, pushing multiple times is supported. +# This is useful e.g. when executing such tests in a Find-module, where they have to be set, +# but after the Find-module has been executed they should have the same value +# as they had before. +# +# Usage: +# cmake_push_check_state() +# set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -DSOME_MORE_DEF) +# check_function_exists(...) +# cmake_pop_check_state() + +# Copyright (c) 2006-2011, Alexander Neundorf, <neundorf@kde.org> +# +# Redistribution and use is allowed according to the terms of the BSD license. +# For details see the accompanying COPYING-CMAKE-SCRIPTS file. + +MACRO(CMAKE_PUSH_CHECK_STATE) + + IF(NOT DEFINED _CMAKE_PUSH_CHECK_STATE_COUNTER) + SET(_CMAKE_PUSH_CHECK_STATE_COUNTER 0) + ENDIF() + + MATH(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}+1") + + SET(_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_INCLUDES}) + SET(_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_DEFINITIONS}) + SET(_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_LIBRARIES}) + SET(_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_FLAGS}) +ENDMACRO(CMAKE_PUSH_CHECK_STATE) + +MACRO(CMAKE_POP_CHECK_STATE) + +# don't pop more than we pushed + IF("${_CMAKE_PUSH_CHECK_STATE_COUNTER}" GREATER "0") + + SET(CMAKE_REQUIRED_INCLUDES ${_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) + SET(CMAKE_REQUIRED_DEFINITIONS ${_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) + SET(CMAKE_REQUIRED_LIBRARIES ${_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) + SET(CMAKE_REQUIRED_FLAGS ${_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) + + MATH(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}-1") + ENDIF() + +ENDMACRO(CMAKE_POP_CHECK_STATE) diff --git a/Tests/CMakeTests/CMakeLists.txt b/Tests/CMakeTests/CMakeLists.txt index 5cb50c9..fc1426e 100644 --- a/Tests/CMakeTests/CMakeLists.txt +++ b/Tests/CMakeTests/CMakeLists.txt @@ -28,6 +28,7 @@ AddCMakeTest(Math "") AddCMakeTest(CMakeMinimumRequired "") AddCMakeTest(CompilerIdVendor "") AddCMakeTest(ProcessorCount "") +AddCMakeTest(PushCheckState "") AddCMakeTest(FileDownload "") set_property(TEST CMake.FileDownload PROPERTY diff --git a/Tests/CMakeTests/PushCheckStateTest.cmake.in b/Tests/CMakeTests/PushCheckStateTest.cmake.in new file mode 100644 index 0000000..e707b9a --- /dev/null +++ b/Tests/CMakeTests/PushCheckStateTest.cmake.in @@ -0,0 +1,30 @@ +include(CMakePushCheckState) + +set(CMAKE_REQUIRED_DEFINITIONS defs1 ) + +cmake_push_check_state() + +set(CMAKE_REQUIRED_DEFINITIONS defs2) + +cmake_push_check_state() + +set(CMAKE_REQUIRED_DEFINITIONS defs3) + +cmake_pop_check_state() + +if (NOT "${CMAKE_REQUIRED_DEFINITIONS}" STREQUAL "defs2") + set(fatal TRUE) + message("ERROR: "CMAKE_REQUIRED_DEFINITIONS is \"${CMAKE_REQUIRED_DEFINITIONS}\" (expected \"defs2\")" ) +endif() + +cmake_pop_check_state() + +if (NOT "${CMAKE_REQUIRED_DEFINITIONS}" STREQUAL "defs1") + set(fatal TRUE) + message("ERROR: "CMAKE_REQUIRED_DEFINITIONS is \"${CMAKE_REQUIRED_DEFINITIONS}\" (expected \"defs1\")" ) +endif() + + +if(fatal) + message(FATAL_ERROR "cmake_push_check_state() test failed") +endif() |