| # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| # file Copyright.txt or https://cmake.org/licensing for details. |
| |
| |
| # determine the compiler to use for Objective-C programs |
| # NOTE, a generator may set CMAKE_OBJC_COMPILER before |
| # loading this file to force a compiler. |
| # use environment variable OBJC first if defined by user, next use |
| # the cmake variable CMAKE_GENERATOR_OBJC which can be defined by a generator |
| # as a default compiler |
| # |
| # Sets the following variables: |
| # CMAKE_OBJC_COMPILER |
| # CMAKE_AR |
| # CMAKE_RANLIB |
| # CMAKE_COMPILER_IS_GNUOBJC |
| # CMAKE_COMPILER_IS_CLANGOBJC |
| # |
| # If not already set before, it also sets |
| # _CMAKE_TOOLCHAIN_PREFIX |
| |
| include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake) |
| |
| # Load system-specific compiler preferences for this language. |
| include(Platform/${CMAKE_SYSTEM_NAME}-Determine-OBJC OPTIONAL) |
| include(Platform/${CMAKE_SYSTEM_NAME}-OBJC OPTIONAL) |
| if(NOT CMAKE_OBJC_COMPILER_NAMES) |
| set(CMAKE_OBJC_COMPILER_NAMES clang) |
| endif() |
| |
| if("${CMAKE_GENERATOR}" MATCHES "Xcode") |
| set(CMAKE_OBJC_COMPILER_XCODE_TYPE sourcecode.c.objc) |
| else() |
| if(NOT CMAKE_OBJC_COMPILER) |
| set(CMAKE_OBJC_COMPILER_INIT NOTFOUND) |
| |
| # prefer the environment variable OBJC or CC |
| foreach(var OBJC CC) |
| if($ENV{${var}} MATCHES ".+") |
| get_filename_component(CMAKE_OBJC_COMPILER_INIT $ENV{${var}} PROGRAM PROGRAM_ARGS CMAKE_OBJC_FLAGS_ENV_INIT) |
| if(CMAKE_OBJC_FLAGS_ENV_INIT) |
| set(CMAKE_OBJC_COMPILER_ARG1 "${CMAKE_OBJC_FLAGS_ENV_INIT}" CACHE STRING "First argument to Objective-C compiler") |
| endif() |
| if(NOT EXISTS ${CMAKE_OBJC_COMPILER_INIT}) |
| message(FATAL_ERROR "Could not find compiler set in environment variable ${var}:\n $ENV{${var}}") |
| endif() |
| break() |
| endif() |
| endforeach() |
| |
| # next try prefer the compiler specified by the generator |
| if(CMAKE_GENERATOR_OBJC) |
| if(NOT CMAKE_OBJC_COMPILER_INIT) |
| set(CMAKE_OBJC_COMPILER_INIT ${CMAKE_GENERATOR_OBJC}) |
| endif() |
| endif() |
| |
| # finally list compilers to try |
| if(NOT CMAKE_OBJC_COMPILER_INIT) |
| set(CMAKE_OBJC_COMPILER_LIST ${_CMAKE_TOOLCHAIN_PREFIX}cc ${_CMAKE_TOOLCHAIN_PREFIX}gcc clang) |
| endif() |
| |
| _cmake_find_compiler(OBJC) |
| |
| else() |
| # we only get here if CMAKE_OBJC_COMPILER was specified using -D or a pre-made CMakeCache.txt |
| # (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE |
| # if CMAKE_OBJC_COMPILER is a list of length 2, use the first item as |
| # CMAKE_OBJC_COMPILER and the 2nd one as CMAKE_OBJC_COMPILER_ARG1 |
| |
| list(LENGTH CMAKE_OBJC_COMPILER _CMAKE_OBJC_COMPILER_LIST_LENGTH) |
| if("${_CMAKE_OBJC_COMPILER_LIST_LENGTH}" EQUAL 2) |
| list(GET CMAKE_OBJC_COMPILER 1 CMAKE_OBJC_COMPILER_ARG1) |
| list(GET CMAKE_OBJC_COMPILER 0 CMAKE_OBJC_COMPILER) |
| endif() |
| |
| # if a compiler was specified by the user but without path, |
| # now try to find it with the full path |
| # if it is found, force it into the cache, |
| # if not, don't overwrite the setting (which was given by the user) with "NOTFOUND" |
| # if the C compiler already had a path, reuse it for searching the CXX compiler |
| get_filename_component(_CMAKE_USER_OBJC_COMPILER_PATH "${CMAKE_OBJC_COMPILER}" PATH) |
| if(NOT _CMAKE_USER_OBJC_COMPILER_PATH) |
| find_program(CMAKE_OBJC_COMPILER_WITH_PATH NAMES ${CMAKE_OBJC_COMPILER}) |
| if(CMAKE_OBJC_COMPILER_WITH_PATH) |
| set(CMAKE_OBJC_COMPILER ${CMAKE_OBJC_COMPILER_WITH_PATH} CACHE STRING "Objective-C compiler" FORCE) |
| endif() |
| unset(CMAKE_OBJC_COMPILER_WITH_PATH CACHE) |
| endif() |
| endif() |
| mark_as_advanced(CMAKE_OBJC_COMPILER) |
| |
| # Each entry in this list is a set of extra flags to try |
| # adding to the compile line to see if it helps produce |
| # a valid identification file. |
| set(CMAKE_OBJC_COMPILER_ID_TEST_FLAGS_FIRST) |
| set(CMAKE_OBJC_COMPILER_ID_TEST_FLAGS |
| # Try compiling to an object file only. |
| "-c" |
| |
| ) |
| endif() |
| |
| # Build a small source file to identify the compiler. |
| if(NOT CMAKE_OBJC_COMPILER_ID_RUN) |
| set(CMAKE_OBJC_COMPILER_ID_RUN 1) |
| |
| # Try to identify the compiler. |
| set(CMAKE_OBJC_COMPILER_ID) |
| file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in |
| CMAKE_OBJC_COMPILER_ID_PLATFORM_CONTENT) |
| |
| # Match the link line from xcodebuild output of the form |
| # Ld ... |
| # ... |
| # /path/to/cc ...CompilerIdOBJC/... |
| # to extract the compiler front-end for the language. |
| set(CMAKE_OBJC_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdOBJC/(\\./)?(CompilerIdOBJC.(framework|xctest)/)?CompilerIdOBJC[ \t\n\\\"]") |
| set(CMAKE_OBJC_COMPILER_ID_TOOL_MATCH_INDEX 2) |
| |
| include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake) |
| CMAKE_DETERMINE_COMPILER_ID(OBJC OBJCCFLAGS CMakeOBJCCompilerId.m) |
| |
| # Set old compiler and platform id variables. |
| if(CMAKE_OBJC_COMPILER_ID STREQUAL "GNU") |
| set(CMAKE_COMPILER_IS_GNUOBJC 1) |
| endif() |
| if(CMAKE_OBJC_COMPILER_ID STREQUAL "Clang") |
| set(CMAKE_COMPILER_IS_CLANGOBJC 1) |
| endif() |
| endif() |
| |
| if (NOT _CMAKE_TOOLCHAIN_LOCATION) |
| get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_OBJC_COMPILER}" PATH) |
| endif () |
| |
| # If we have a gcc cross compiler, they have usually some prefix, like |
| # e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc, optionally |
| # with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2). |
| # The other tools of the toolchain usually have the same prefix |
| # NAME_WE cannot be used since then this test will fail for names like |
| # "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be |
| # "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-" |
| if (CMAKE_CROSSCOMPILING AND NOT _CMAKE_TOOLCHAIN_PREFIX) |
| |
| if(CMAKE_OBJC_COMPILER_ID MATCHES "GNU|Clang|QCC") |
| get_filename_component(COMPILER_BASENAME "${CMAKE_OBJC_COMPILER}" NAME) |
| if (COMPILER_BASENAME MATCHES "^(.+-)(clang|g?cc)(-[0-9]+(\\.[0-9]+)*)?(-[^.]+)?(\\.exe)?$") |
| set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1}) |
| set(_CMAKE_COMPILER_SUFFIX ${CMAKE_MATCH_5}) |
| elseif(CMAKE_OBJC_COMPILER_ID MATCHES "Clang") |
| if(CMAKE_OBJC_COMPILER_TARGET) |
| set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_OBJC_COMPILER_TARGET}-) |
| endif() |
| elseif(COMPILER_BASENAME MATCHES "qcc(\\.exe)?$") |
| if(CMAKE_OBJC_COMPILER_TARGET MATCHES "gcc_nto([a-z0-9]+_[0-9]+|[^_le]+)(le)?") |
| set(_CMAKE_TOOLCHAIN_PREFIX nto${CMAKE_MATCH_1}-) |
| endif() |
| endif () |
| |
| # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils |
| # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.) |
| if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$") |
| set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1}) |
| endif () |
| endif() |
| |
| endif () |
| |
| set(_CMAKE_PROCESSING_LANGUAGE "OBJC") |
| include(CMakeFindBinUtils) |
| include(Compiler/${CMAKE_OBJC_COMPILER_ID}-FindBinUtils OPTIONAL) |
| unset(_CMAKE_PROCESSING_LANGUAGE) |
| |
| if(CMAKE_OBJC_COMPILER_ARCHITECTURE_ID) |
| set(_SET_CMAKE_OBJC_COMPILER_ARCHITECTURE_ID |
| "set(CMAKE_OBJC_COMPILER_ARCHITECTURE_ID ${CMAKE_OBJC_COMPILER_ARCHITECTURE_ID})") |
| else() |
| set(_SET_CMAKE_OBJC_COMPILER_ARCHITECTURE_ID "") |
| endif() |
| |
| if(CMAKE_OBJC_XCODE_ARCHS) |
| set(SET_CMAKE_XCODE_ARCHS |
| "set(CMAKE_XCODE_ARCHS \"${CMAKE_OBJC_XCODE_ARCHS}\")") |
| endif() |
| |
| # configure variables set in this file for fast reload later on |
| configure_file(${CMAKE_ROOT}/Modules/CMakeOBJCCompiler.cmake.in |
| ${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCCompiler.cmake |
| @ONLY |
| ) |
| set(CMAKE_OBJC_COMPILER_ENV_VAR "OBJC") |