mirror of
https://github.com/crystalidea/qt-build-tools.git
synced 2024-11-27 13:49:04 +08:00
169 lines
6.4 KiB
CMake
169 lines
6.4 KiB
CMake
|
# 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
|
||
|
|
|
||
|
|
.. 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)
|
||
|
|
|
||
|
|
macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE)
|
||
|
|
if(NOT DEFINED "${VARIABLE}")
|
||
|
|
set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
|
||
|
|
|
||
|
|
if("x${ARGN}" STREQUAL "x")
|
||
|
|
if(CMAKE_C_COMPILER_LOADED)
|
||
|
|
set(_lang C)
|
||
|
|
elseif(CMAKE_CXX_COMPILER_LOADED)
|
||
|
|
set(_lang CXX)
|
||
|
|
else()
|
||
|
|
message(FATAL_ERROR "CHECK_INCLUDE_FILES needs either C or CXX language enabled.\n")
|
||
|
|
endif()
|
||
|
|
elseif("x${ARGN}" MATCHES "^xLANGUAGE;([a-zA-Z]+)$")
|
||
|
|
set(_lang "${CMAKE_MATCH_1}")
|
||
|
|
elseif("x${ARGN}" MATCHES "^xLANGUAGE$")
|
||
|
|
message(FATAL_ERROR "No languages listed for LANGUAGE option.\nSupported languages: C, CXX.\n")
|
||
|
|
else()
|
||
|
|
message(FATAL_ERROR "Unknown arguments:\n ${ARGN}\n")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(_lang STREQUAL "C")
|
||
|
|
set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${VARIABLE}.c)
|
||
|
|
elseif(_lang STREQUAL "CXX")
|
||
|
|
set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${VARIABLE}.cpp)
|
||
|
|
else()
|
||
|
|
message(FATAL_ERROR "Unknown language:\n ${_lang}\nSupported languages: C, CXX.\n")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(CMAKE_REQUIRED_INCLUDES)
|
||
|
|
set(CHECK_INCLUDE_FILES_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
|
||
|
|
else()
|
||
|
|
set(CHECK_INCLUDE_FILES_INCLUDE_DIRS)
|
||
|
|
endif()
|
||
|
|
set(CHECK_INCLUDE_FILES_CONTENT "/* */\n")
|
||
|
|
set(MACRO_CHECK_INCLUDE_FILES_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
||
|
|
foreach(FILE ${INCLUDE})
|
||
|
|
string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
|
||
|
|
"#include <${FILE}>\n")
|
||
|
|
endforeach()
|
||
|
|
string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
|
||
|
|
"\n\nint main(void){return 0;}\n")
|
||
|
|
configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
|
||
|
|
"${src}" @ONLY)
|
||
|
|
|
||
|
|
set(_INCLUDE ${INCLUDE}) # remove empty elements
|
||
|
|
if("${_INCLUDE}" MATCHES "^([^;]+);.+;([^;]+)$")
|
||
|
|
list(LENGTH _INCLUDE _INCLUDE_LEN)
|
||
|
|
set(_description "${_INCLUDE_LEN} include files ${CMAKE_MATCH_1}, ..., ${CMAKE_MATCH_2}")
|
||
|
|
elseif("${_INCLUDE}" MATCHES "^([^;]+);([^;]+)$")
|
||
|
|
set(_description "include files ${CMAKE_MATCH_1}, ${CMAKE_MATCH_2}")
|
||
|
|
else()
|
||
|
|
set(_description "include file ${_INCLUDE}")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
set(_CIF_LINK_OPTIONS)
|
||
|
|
if(CMAKE_REQUIRED_LINK_OPTIONS)
|
||
|
|
set(_CIF_LINK_OPTIONS LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
|
||
|
|
endif()
|
||
|
|
|
||
|
|
set(_CIF_LINK_LIBRARIES "")
|
||
|
|
if(CMAKE_REQUIRED_LIBRARIES)
|
||
|
|
cmake_policy(GET CMP0075 _CIF_CMP0075
|
||
|
|
PARENT_SCOPE # undocumented, do not use outside of CMake
|
||
|
|
)
|
||
|
|
if("x${_CIF_CMP0075}x" STREQUAL "xNEWx")
|
||
|
|
set(_CIF_LINK_LIBRARIES LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
|
||
|
|
elseif("x${_CIF_CMP0075}x" STREQUAL "xOLDx")
|
||
|
|
elseif(NOT _CIF_CMP0075_WARNED)
|
||
|
|
set(_CIF_CMP0075_WARNED 1)
|
||
|
|
message(AUTHOR_WARNING
|
||
|
|
"Policy CMP0075 is not set: Include file check macros honor CMAKE_REQUIRED_LIBRARIES. "
|
||
|
|
"Run \"cmake --help-policy CMP0075\" for policy details. "
|
||
|
|
"Use the cmake_policy command to set the policy and suppress this warning."
|
||
|
|
"\n"
|
||
|
|
"CMAKE_REQUIRED_LIBRARIES is set to:\n"
|
||
|
|
" ${CMAKE_REQUIRED_LIBRARIES}\n"
|
||
|
|
"For compatibility with CMake 3.11 and below this check is ignoring it."
|
||
|
|
)
|
||
|
|
endif()
|
||
|
|
unset(_CIF_CMP0075)
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(NOT CMAKE_REQUIRED_QUIET)
|
||
|
|
message(STATUS "Looking for ${_description}")
|
||
|
|
endif()
|
||
|
|
try_compile(${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)
|
||
|
|
message(STATUS "Looking for ${_description} - found")
|
||
|
|
endif()
|
||
|
|
set(${VARIABLE} 1 CACHE INTERNAL "Have include ${INCLUDE}")
|
||
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
|
||
|
|
"Determining if files ${INCLUDE} "
|
||
|
|
"exist passed with the following output:\n"
|
||
|
|
"${OUTPUT}\n\n")
|
||
|
|
else()
|
||
|
|
if(NOT CMAKE_REQUIRED_QUIET)
|
||
|
|
message(STATUS "Looking for ${_description} - not found")
|
||
|
|
endif()
|
||
|
|
set(${VARIABLE} "" CACHE INTERNAL "Have includes ${INCLUDE}")
|
||
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
||
|
|
"Determining if files ${INCLUDE} "
|
||
|
|
"exist failed with the following output:\n"
|
||
|
|
"${OUTPUT}\nSource:\n${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endmacro()
|