diff options
Diffstat (limited to 'Modules/CMakePushCheckState.cmake')
| -rw-r--r-- | Modules/CMakePushCheckState.cmake | 74 |
1 files changed, 38 insertions, 36 deletions
diff --git a/Modules/CMakePushCheckState.cmake b/Modules/CMakePushCheckState.cmake index b37b706ac..2a527d5bd 100644 --- a/Modules/CMakePushCheckState.cmake +++ b/Modules/CMakePushCheckState.cmake @@ -1,51 +1,49 @@ -# This module defines three macros: -# CMAKE_PUSH_CHECK_STATE() -# CMAKE_POP_CHECK_STATE() -# and -# CMAKE_RESET_CHECK_STATE() -# These macros can be used to save, restore and reset (i.e., clear contents) -# 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. +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#.rst: +# CMakePushCheckState +# ------------------- +# +# # -# CMAKE_PUSH_CHECK_STATE() macro receives optional argument RESET. Whether it's specified, -# CMAKE_PUSH_CHECK_STATE() will set all CMAKE_REQUIRED_* variables to empty values, same -# as CMAKE_RESET_CHECK_STATE() call will do. +# This module defines three macros: CMAKE_PUSH_CHECK_STATE() +# CMAKE_POP_CHECK_STATE() and CMAKE_RESET_CHECK_STATE() These macros can +# be used to save, restore and reset (i.e., clear contents) the state of +# the variables CMAKE_REQUIRED_FLAGS, CMAKE_REQUIRED_DEFINITIONS, +# CMAKE_REQUIRED_LIBRARIES, CMAKE_REQUIRED_INCLUDES and CMAKE_EXTRA_INCLUDE_FILES +# 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. +# +# CMAKE_PUSH_CHECK_STATE() macro receives optional argument RESET. +# Whether it's specified, CMAKE_PUSH_CHECK_STATE() will set all +# CMAKE_REQUIRED_* variables to empty values, same as +# CMAKE_RESET_CHECK_STATE() call will do. # # Usage: -# cmake_push_check_state(RESET) -# set(CMAKE_REQUIRED_DEFINITIONS -DSOME_MORE_DEF) -# check_function_exists(...) -# cmake_reset_check_state() -# set(CMAKE_REQUIRED_DEFINITIONS -DANOTHER_DEF) -# check_function_exists(...) -# cmake_pop_check_state() - -#============================================================================= -# Copyright 2006-2011 Alexander Neundorf, <neundorf@kde.org> # -# Distributed under the OSI-approved BSD License (the "License"); -# see accompanying file Copyright.txt for details. +# :: # -# This software is distributed WITHOUT ANY WARRANTY; without even the -# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# See the License for more information. -#============================================================================= -# (To distribute this file outside of CMake, substitute the full -# License text for the above reference.) - +# cmake_push_check_state(RESET) +# set(CMAKE_REQUIRED_DEFINITIONS -DSOME_MORE_DEF) +# check_function_exists(...) +# cmake_reset_check_state() +# set(CMAKE_REQUIRED_DEFINITIONS -DANOTHER_DEF) +# check_function_exists(...) +# cmake_pop_check_state() macro(CMAKE_RESET_CHECK_STATE) + set(CMAKE_EXTRA_INCLUDE_FILES) set(CMAKE_REQUIRED_INCLUDES) set(CMAKE_REQUIRED_DEFINITIONS) set(CMAKE_REQUIRED_LIBRARIES) set(CMAKE_REQUIRED_FLAGS) + set(CMAKE_REQUIRED_QUIET) endmacro() @@ -57,10 +55,12 @@ macro(CMAKE_PUSH_CHECK_STATE) math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}+1") + set(_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_EXTRA_INCLUDE_FILES}) set(_CMAKE_REQUIRED_INCLUDES_SAVE_${_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} ${CMAKE_REQUIRED_FLAGS}) + set(_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_QUIET}) if (ARGC GREATER 0 AND ARGV0 STREQUAL "RESET") cmake_reset_check_state() @@ -73,10 +73,12 @@ macro(CMAKE_POP_CHECK_STATE) # don't pop more than we pushed if("${_CMAKE_PUSH_CHECK_STATE_COUNTER}" GREATER "0") + set(CMAKE_EXTRA_INCLUDE_FILES ${_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) 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}}) + set(CMAKE_REQUIRED_QUIET ${_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}}) math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}-1") endif() |