diff options
| author | David Adam <zanchey@ucc.gu.uwa.edu.au> | 2017-11-08 23:01:42 +0800 |
|---|---|---|
| committer | David Adam <zanchey@ucc.gu.uwa.edu.au> | 2017-11-11 23:02:30 +0800 |
| commit | 7669695a74959dbad7c801facea4c7428875ffc3 (patch) | |
| tree | f5b679389ba2c6f494077e12871073823d8fcc45 /Modules/CheckIncludeFiles.cmake | |
| parent | a7347c022eb67272eea7dca5a58d0b94806b7d95 (diff) | |
| download | cmake-7669695a74959dbad7c801facea4c7428875ffc3.tar.gz | |
CheckIncludeFiles: extend to allow a LANGUAGE argument
Allows CheckIncludeFiles to work for C or C++.
Diffstat (limited to 'Modules/CheckIncludeFiles.cmake')
| -rw-r--r-- | Modules/CheckIncludeFiles.cmake | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/Modules/CheckIncludeFiles.cmake b/Modules/CheckIncludeFiles.cmake index bef11a5e99..3b43d28c7b 100644 --- a/Modules/CheckIncludeFiles.cmake +++ b/Modules/CheckIncludeFiles.cmake @@ -12,13 +12,16 @@ # # :: # -# CHECK_INCLUDE_FILES("<includes>" <variable>) +# CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>]) # # Check if the given ``<includes>`` list may be included together # in a ``C`` 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. +# # The following variables may be set before calling this macro to modify # the way the check is run: # @@ -37,6 +40,29 @@ 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") + endif() + elseif("x${ARGN}" MATCHES "^xLANGUAGE;([a-zA-Z]+)$") + set(_lang "${CMAKE_MATCH_1}") + else() + message(FATAL_ERROR "Unknown arguments:\n ${ARGN}\n") + endif() + + if(_lang STREQUAL "C") + set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${var}.c) + elseif(_lang STREQUAL "CXX") + set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${var}.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() @@ -51,7 +77,7 @@ macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE) string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT "\n\nint main(void){return 0;}\n") configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in" - "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.c" @ONLY) + "${src}" @ONLY) set(_INCLUDE ${INCLUDE}) # remove empty elements if("${_INCLUDE}" MATCHES "^([^;]+);.+;([^;]+)$") @@ -68,7 +94,7 @@ macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE) endif() try_compile(${VARIABLE} ${CMAKE_BINARY_DIR} - ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.c + ${src} COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILES_FLAGS} |