diff options
Diffstat (limited to 'Modules/CheckIncludeFiles.cmake')
| -rw-r--r-- | Modules/CheckIncludeFiles.cmake | 90 |
1 files changed, 51 insertions, 39 deletions
diff --git a/Modules/CheckIncludeFiles.cmake b/Modules/CheckIncludeFiles.cmake index c689f05e9..f52ab55fb 100644 --- a/Modules/CheckIncludeFiles.cmake +++ b/Modules/CheckIncludeFiles.cmake @@ -1,45 +1,50 @@ # Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. -#.rst: -# CheckIncludeFiles -# ----------------- -# -# Provides a macro to check if a list of one or more header files can -# be included together. -# -# .. command:: CHECK_INCLUDE_FILES -# -# :: -# -# CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>]) -# -# Check if the given ``<includes>`` list may be included together -# in a source file and store the result in an internal cache -# entry named ``<variable>``. Specify the ``<includes>`` argument -# as a :ref:`;-list <CMake Language Lists>` of header file names. -# -# If LANGUAGE is set, the specified compiler will be used to perform the -# check. Acceptable values are ``C`` and ``CXX``. If not set, the C compiler -# will be used if enabled. If the C compiler is not enabled, the C++ -# compiler will be used if enabled. -# -# The following variables may be set before calling this macro to modify -# the way the check is run: -# -# ``CMAKE_REQUIRED_FLAGS`` -# string of compile command line flags -# ``CMAKE_REQUIRED_DEFINITIONS`` -# list of macros to define (-DFOO=bar) -# ``CMAKE_REQUIRED_INCLUDES`` -# list of include directories -# ``CMAKE_REQUIRED_LIBRARIES`` -# A list of libraries to link. See policy :policy:`CMP0075`. -# ``CMAKE_REQUIRED_QUIET`` -# execute quietly without messages -# -# See modules :module:`CheckIncludeFile` and :module:`CheckIncludeFileCXX` -# to check for a single header file in ``C`` or ``CXX`` languages. +#[=======================================================================[.rst: +CheckIncludeFiles +----------------- + +Provides a macro to check if a list of one or more header files can +be included together. + +.. command:: CHECK_INCLUDE_FILES + + .. code-block:: cmake + + CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>]) + + Check if the given ``<includes>`` list may be included together + in a source file and store the result in an internal cache + entry named ``<variable>``. Specify the ``<includes>`` argument + as a :ref:`;-list <CMake Language Lists>` of header file names. + + If ``LANGUAGE`` is set, the specified compiler will be used to perform the + check. Acceptable values are ``C`` and ``CXX``. If not set, the C compiler + will be used if enabled. If the C compiler is not enabled, the C++ + compiler will be used if enabled. + +The following variables may be set before calling this macro to modify +the way the check is run: + +``CMAKE_REQUIRED_FLAGS`` + string of compile command line flags. +``CMAKE_REQUIRED_DEFINITIONS`` + a :ref:`;-list <CMake Language Lists>` of macros to define (-DFOO=bar). +``CMAKE_REQUIRED_INCLUDES`` + a :ref:`;-list <CMake Language Lists>` of header search paths to pass to + the compiler. +``CMAKE_REQUIRED_LINK_OPTIONS`` + a :ref:`;-list <CMake Language Lists>` of options to add to the link command. +``CMAKE_REQUIRED_LIBRARIES`` + a :ref:`;-list <CMake Language Lists>` of libraries to add to the link + command. See policy :policy:`CMP0075`. +``CMAKE_REQUIRED_QUIET`` + execute quietly without messages. + +See modules :module:`CheckIncludeFile` and :module:`CheckIncludeFileCXX` +to check for a single header file in ``C`` or ``CXX`` languages. +#]=======================================================================] include_guard(GLOBAL) @@ -97,6 +102,11 @@ macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE) set(_description "include file ${_INCLUDE}") endif() + set(_CIF_LINK_OPTIONS) + if(CMAKE_REQUIRED_LINK_OPTIONS) + set(_CIF_LINK_OPTIONS LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS}) + endif() + set(_CIF_LINK_LIBRARIES "") if(CMAKE_REQUIRED_LIBRARIES) cmake_policy(GET CMP0075 _CIF_CMP0075 @@ -127,11 +137,13 @@ macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE) ${CMAKE_BINARY_DIR} ${src} COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} + ${_CIF_LINK_OPTIONS} ${_CIF_LINK_LIBRARIES} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILES_FLAGS} "${CHECK_INCLUDE_FILES_INCLUDE_DIRS}" OUTPUT_VARIABLE OUTPUT) + unset(_CIF_LINK_OPTIONS) unset(_CIF_LINK_LIBRARIES) if(${VARIABLE}) if(NOT CMAKE_REQUIRED_QUIET) |