bcbae3f71e
When targeting a platform that supports multiple architectures, Xcode may choose to build all of them in our small compiler id project. Update the regex we use to extract the path to the compiler from the Xcode output to account for this. Fixes: #21425
226 lines
8.2 KiB
CMake
226 lines
8.2 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# determine the compiler to use for C++ programs
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# NOTE, a generator may set CMAKE_CXX_COMPILER before
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# loading this file to force a compiler.
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# use environment variable CXX first if defined by user, next use
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# the cmake variable CMAKE_GENERATOR_CXX which can be defined by a generator
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# as a default compiler
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# If the internal cmake variable _CMAKE_TOOLCHAIN_PREFIX is set, this is used
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# as prefix for the tools (e.g. arm-elf-g++, arm-elf-ar etc.)
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#
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# Sets the following variables:
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# CMAKE_CXX_COMPILER
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# CMAKE_COMPILER_IS_GNUCXX
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# CMAKE_AR
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# CMAKE_RANLIB
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#
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# If not already set before, it also sets
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# _CMAKE_TOOLCHAIN_PREFIX
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include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
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# Load system-specific compiler preferences for this language.
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include(Platform/${CMAKE_SYSTEM_NAME}-Determine-CXX OPTIONAL)
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include(Platform/${CMAKE_SYSTEM_NAME}-CXX OPTIONAL)
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if(NOT CMAKE_CXX_COMPILER_NAMES)
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set(CMAKE_CXX_COMPILER_NAMES CC)
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endif()
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if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
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elseif("${CMAKE_GENERATOR}" MATCHES "Green Hills MULTI")
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elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
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set(CMAKE_CXX_COMPILER_XCODE_TYPE sourcecode.cpp.cpp)
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_cmake_find_compiler_path(CXX)
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else()
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if(NOT CMAKE_CXX_COMPILER)
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set(CMAKE_CXX_COMPILER_INIT NOTFOUND)
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# prefer the environment variable CXX
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if(NOT $ENV{CXX} STREQUAL "")
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get_filename_component(CMAKE_CXX_COMPILER_INIT $ENV{CXX} PROGRAM PROGRAM_ARGS CMAKE_CXX_FLAGS_ENV_INIT)
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if(CMAKE_CXX_FLAGS_ENV_INIT)
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set(CMAKE_CXX_COMPILER_ARG1 "${CMAKE_CXX_FLAGS_ENV_INIT}" CACHE STRING "First argument to CXX compiler")
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endif()
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if(NOT EXISTS ${CMAKE_CXX_COMPILER_INIT})
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message(FATAL_ERROR "Could not find compiler set in environment variable CXX:\n$ENV{CXX}.\n${CMAKE_CXX_COMPILER_INIT}")
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endif()
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endif()
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# next prefer the generator specified compiler
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if(CMAKE_GENERATOR_CXX)
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if(NOT CMAKE_CXX_COMPILER_INIT)
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set(CMAKE_CXX_COMPILER_INIT ${CMAKE_GENERATOR_CXX})
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endif()
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endif()
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# finally list compilers to try
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if(NOT CMAKE_CXX_COMPILER_INIT)
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set(CMAKE_CXX_COMPILER_LIST CC ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ aCC cl bcc xlC clang++)
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endif()
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_cmake_find_compiler(CXX)
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else()
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_cmake_find_compiler_path(CXX)
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endif()
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mark_as_advanced(CMAKE_CXX_COMPILER)
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# Each entry in this list is a set of extra flags to try
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# adding to the compile line to see if it helps produce
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# a valid identification file.
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set(CMAKE_CXX_COMPILER_ID_TEST_FLAGS_FIRST)
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set(CMAKE_CXX_COMPILER_ID_TEST_FLAGS
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# Try compiling to an object file only.
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"-c"
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# IAR does not detect language automatically
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"--c++"
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"--ec++"
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# ARMClang need target options
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"--target=arm-arm-none-eabi -mcpu=cortex-m3"
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)
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endif()
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# Build a small source file to identify the compiler.
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if(NOT CMAKE_CXX_COMPILER_ID_RUN)
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set(CMAKE_CXX_COMPILER_ID_RUN 1)
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# Try to identify the compiler.
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set(CMAKE_CXX_COMPILER_ID)
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set(CMAKE_CXX_PLATFORM_ID)
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file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
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CMAKE_CXX_COMPILER_ID_PLATFORM_CONTENT)
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# The IAR compiler produces weird output.
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# See https://gitlab.kitware.com/cmake/cmake/-/issues/10176#note_153591
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list(APPEND CMAKE_CXX_COMPILER_ID_VENDORS IAR)
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set(CMAKE_CXX_COMPILER_ID_VENDOR_FLAGS_IAR )
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set(CMAKE_CXX_COMPILER_ID_VENDOR_REGEX_IAR "IAR .+ Compiler")
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# Match the link line from xcodebuild output of the form
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# Ld ...
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# ...
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# /path/to/cc ...CompilerIdCXX/...
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# to extract the compiler front-end for the language.
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set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdCXX/(\\./)?(CompilerIdCXX.(framework|xctest|build/[^ \t\r\n]+)/)?CompilerIdCXX[ \t\n\\\"]")
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set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_INDEX 2)
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include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
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CMAKE_DETERMINE_COMPILER_ID(CXX CXXFLAGS CMakeCXXCompilerId.cpp)
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_cmake_find_compiler_sysroot(CXX)
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# Set old compiler and platform id variables.
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if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set(CMAKE_COMPILER_IS_GNUCXX 1)
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endif()
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if(CMAKE_CXX_PLATFORM_ID MATCHES "MinGW")
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set(CMAKE_COMPILER_IS_MINGW 1)
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elseif(CMAKE_CXX_PLATFORM_ID MATCHES "Cygwin")
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set(CMAKE_COMPILER_IS_CYGWIN 1)
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endif()
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else()
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if(NOT DEFINED CMAKE_CXX_COMPILER_FRONTEND_VARIANT)
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# Some toolchain files set our internal CMAKE_CXX_COMPILER_ID_RUN
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# variable but are not aware of CMAKE_CXX_COMPILER_FRONTEND_VARIANT.
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# They pre-date our support for the GNU-like variant targeting the
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# MSVC ABI so we do not consider that here.
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if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
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set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "MSVC")
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else()
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set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "GNU")
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endif()
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else()
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set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "")
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endif()
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endif()
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endif()
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if (NOT _CMAKE_TOOLCHAIN_LOCATION)
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get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_CXX_COMPILER}" PATH)
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endif ()
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# if we have a g++ cross compiler, they have usually some prefix, like
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# e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++ , optionally
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# with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).
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# The other tools of the toolchain usually have the same prefix
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# NAME_WE cannot be used since then this test will fail for names like
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# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
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# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
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if (NOT _CMAKE_TOOLCHAIN_PREFIX)
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if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU|Clang|QCC")
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get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
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if (COMPILER_BASENAME MATCHES "^(.+-)(clan)?[gc]\\+\\+(-[0-9]+(\\.[0-9]+)*)?(-[^.]+)?(\\.exe)?$")
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set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
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set(_CMAKE_COMPILER_SUFFIX ${CMAKE_MATCH_5})
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elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
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if(CMAKE_CXX_COMPILER_TARGET)
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set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_CXX_COMPILER_TARGET}-)
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endif()
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elseif(COMPILER_BASENAME MATCHES "QCC(\\.exe)?$")
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if(CMAKE_CXX_COMPILER_TARGET MATCHES "gcc_nto([a-z0-9]+_[0-9]+|[^_le]+)(le)")
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set(_CMAKE_TOOLCHAIN_PREFIX nto${CMAKE_MATCH_1}-)
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endif()
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endif ()
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# if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
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# but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
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if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
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set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
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endif ()
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elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "TI")
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# TI compilers are named e.g. cl6x, cl470 or armcl.exe
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get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
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if (COMPILER_BASENAME MATCHES "^(.+)?cl([^.]+)?(\\.exe)?$")
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set(_CMAKE_TOOLCHAIN_PREFIX "${CMAKE_MATCH_1}")
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set(_CMAKE_TOOLCHAIN_SUFFIX "${CMAKE_MATCH_2}")
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endif ()
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endif()
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endif ()
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set(_CMAKE_PROCESSING_LANGUAGE "CXX")
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include(CMakeFindBinUtils)
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include(Compiler/${CMAKE_CXX_COMPILER_ID}-FindBinUtils OPTIONAL)
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unset(_CMAKE_PROCESSING_LANGUAGE)
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if(CMAKE_CXX_COMPILER_SYSROOT)
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string(CONCAT _SET_CMAKE_CXX_COMPILER_SYSROOT
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"set(CMAKE_CXX_COMPILER_SYSROOT \"${CMAKE_CXX_COMPILER_SYSROOT}\")\n"
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"set(CMAKE_COMPILER_SYSROOT \"${CMAKE_CXX_COMPILER_SYSROOT}\")")
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else()
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set(_SET_CMAKE_CXX_COMPILER_SYSROOT "")
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endif()
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if(CMAKE_CXX_COMPILER_ARCHITECTURE_ID)
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set(_SET_CMAKE_CXX_COMPILER_ARCHITECTURE_ID
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"set(CMAKE_CXX_COMPILER_ARCHITECTURE_ID ${CMAKE_CXX_COMPILER_ARCHITECTURE_ID})")
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else()
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set(_SET_CMAKE_CXX_COMPILER_ARCHITECTURE_ID "")
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endif()
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if(MSVC_CXX_ARCHITECTURE_ID)
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set(SET_MSVC_CXX_ARCHITECTURE_ID
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"set(MSVC_CXX_ARCHITECTURE_ID ${MSVC_CXX_ARCHITECTURE_ID})")
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endif()
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if(CMAKE_CXX_XCODE_ARCHS)
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set(SET_CMAKE_XCODE_ARCHS
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"set(CMAKE_XCODE_ARCHS \"${CMAKE_CXX_XCODE_ARCHS}\")")
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endif()
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# configure all variables set in this file
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configure_file(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
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${CMAKE_PLATFORM_INFO_DIR}/CMakeCXXCompiler.cmake
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@ONLY
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)
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set(CMAKE_CXX_COMPILER_ENV_VAR "CXX")
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