mirror of
https://github.com/reactos/CMake.git
synced 2024-11-23 19:49:51 +00:00
a245479372
Since commit d44c0db0b2 (clang: setup correct configuration in gnu mode,
2019-02-20, v3.15.0-rc1~41^2~5) our Clang compiler information modules
need the `CMAKE_<LANG>_COMPILER_FRONTEND_VARIANT` variable that we
compute during compiler detection. However, some existing toolchain
files set our internal `CMAKE_<LANG>_COMPILER_ID_RUN` variables and
block that detection, but do not set the new frontend variant variable.
Help them out by setting `CMAKE_<LANG>_COMPILER_FRONTEND_VARIANT` anyway.
Fixes: #19515, #19539
217 lines
7.8 KiB
CMake
217 lines
7.8 KiB
CMake
# 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 C programs
|
|
# NOTE, a generator may set CMAKE_C_COMPILER before
|
|
# loading this file to force a compiler.
|
|
# use environment variable CC first if defined by user, next use
|
|
# the cmake variable CMAKE_GENERATOR_CC which can be defined by a generator
|
|
# as a default compiler
|
|
# If the internal cmake variable _CMAKE_TOOLCHAIN_PREFIX is set, this is used
|
|
# as prefix for the tools (e.g. arm-elf-gcc, arm-elf-ar etc.). This works
|
|
# currently with the GNU crosscompilers.
|
|
#
|
|
# Sets the following variables:
|
|
# CMAKE_C_COMPILER
|
|
# CMAKE_AR
|
|
# CMAKE_RANLIB
|
|
# CMAKE_COMPILER_IS_GNUCC
|
|
#
|
|
# 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-C OPTIONAL)
|
|
include(Platform/${CMAKE_SYSTEM_NAME}-C OPTIONAL)
|
|
if(NOT CMAKE_C_COMPILER_NAMES)
|
|
set(CMAKE_C_COMPILER_NAMES cc)
|
|
endif()
|
|
|
|
if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
|
|
elseif("${CMAKE_GENERATOR}" MATCHES "Green Hills MULTI")
|
|
elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
|
|
set(CMAKE_C_COMPILER_XCODE_TYPE sourcecode.c.c)
|
|
_cmake_find_compiler_path(C)
|
|
else()
|
|
if(NOT CMAKE_C_COMPILER)
|
|
set(CMAKE_C_COMPILER_INIT NOTFOUND)
|
|
|
|
# prefer the environment variable CC
|
|
if(NOT $ENV{CC} STREQUAL "")
|
|
get_filename_component(CMAKE_C_COMPILER_INIT $ENV{CC} PROGRAM PROGRAM_ARGS CMAKE_C_FLAGS_ENV_INIT)
|
|
if(CMAKE_C_FLAGS_ENV_INIT)
|
|
set(CMAKE_C_COMPILER_ARG1 "${CMAKE_C_FLAGS_ENV_INIT}" CACHE STRING "First argument to C compiler")
|
|
endif()
|
|
if(NOT EXISTS ${CMAKE_C_COMPILER_INIT})
|
|
message(FATAL_ERROR "Could not find compiler set in environment variable CC:\n$ENV{CC}.")
|
|
endif()
|
|
endif()
|
|
|
|
# next try prefer the compiler specified by the generator
|
|
if(CMAKE_GENERATOR_CC)
|
|
if(NOT CMAKE_C_COMPILER_INIT)
|
|
set(CMAKE_C_COMPILER_INIT ${CMAKE_GENERATOR_CC})
|
|
endif()
|
|
endif()
|
|
|
|
# finally list compilers to try
|
|
if(NOT CMAKE_C_COMPILER_INIT)
|
|
set(CMAKE_C_COMPILER_LIST ${_CMAKE_TOOLCHAIN_PREFIX}cc ${_CMAKE_TOOLCHAIN_PREFIX}gcc cl bcc xlc clang)
|
|
endif()
|
|
|
|
_cmake_find_compiler(C)
|
|
|
|
else()
|
|
_cmake_find_compiler_path(C)
|
|
endif()
|
|
mark_as_advanced(CMAKE_C_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_C_COMPILER_ID_TEST_FLAGS_FIRST)
|
|
set(CMAKE_C_COMPILER_ID_TEST_FLAGS
|
|
# Try compiling to an object file only.
|
|
"-c"
|
|
|
|
# Try enabling ANSI mode on HP.
|
|
"-Aa"
|
|
|
|
# Try compiling K&R-compatible code (needed by Bruce C Compiler).
|
|
"-D__CLASSIC_C__"
|
|
|
|
# ARMClang need target options
|
|
"--target=arm-arm-none-eabi -mcpu=cortex-m3"
|
|
)
|
|
endif()
|
|
|
|
# Build a small source file to identify the compiler.
|
|
if(NOT CMAKE_C_COMPILER_ID_RUN)
|
|
set(CMAKE_C_COMPILER_ID_RUN 1)
|
|
|
|
# Try to identify the compiler.
|
|
set(CMAKE_C_COMPILER_ID)
|
|
set(CMAKE_C_PLATFORM_ID)
|
|
file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
|
|
CMAKE_C_COMPILER_ID_PLATFORM_CONTENT)
|
|
|
|
# The IAR compiler produces weird output.
|
|
# See https://gitlab.kitware.com/cmake/cmake/issues/10176#note_153591
|
|
list(APPEND CMAKE_C_COMPILER_ID_VENDORS IAR)
|
|
set(CMAKE_C_COMPILER_ID_VENDOR_FLAGS_IAR )
|
|
set(CMAKE_C_COMPILER_ID_VENDOR_REGEX_IAR "IAR .+ Compiler")
|
|
|
|
# Match the link line from xcodebuild output of the form
|
|
# Ld ...
|
|
# ...
|
|
# /path/to/cc ...CompilerIdC/...
|
|
# to extract the compiler front-end for the language.
|
|
set(CMAKE_C_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdC/(\\./)?(CompilerIdC.(framework|xctest)/)?CompilerIdC[ \t\n\\\"]")
|
|
set(CMAKE_C_COMPILER_ID_TOOL_MATCH_INDEX 2)
|
|
|
|
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
|
|
CMAKE_DETERMINE_COMPILER_ID(C CFLAGS CMakeCCompilerId.c)
|
|
|
|
# Set old compiler and platform id variables.
|
|
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
|
|
set(CMAKE_COMPILER_IS_GNUCC 1)
|
|
endif()
|
|
if(CMAKE_C_PLATFORM_ID MATCHES "MinGW")
|
|
set(CMAKE_COMPILER_IS_MINGW 1)
|
|
elseif(CMAKE_C_PLATFORM_ID MATCHES "Cygwin")
|
|
set(CMAKE_COMPILER_IS_CYGWIN 1)
|
|
endif()
|
|
else()
|
|
if(NOT DEFINED CMAKE_C_COMPILER_FRONTEND_VARIANT)
|
|
# Some toolchain files set our internal CMAKE_C_COMPILER_ID_RUN
|
|
# variable but are not aware of CMAKE_C_COMPILER_FRONTEND_VARIANT.
|
|
# They pre-date our support for the GNU-like variant targeting the
|
|
# MSVC ABI so we do not consider that here.
|
|
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
|
|
if("x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
|
|
set(CMAKE_C_COMPILER_FRONTEND_VARIANT "MSVC")
|
|
else()
|
|
set(CMAKE_C_COMPILER_FRONTEND_VARIANT "GNU")
|
|
endif()
|
|
else()
|
|
set(CMAKE_C_COMPILER_FRONTEND_VARIANT "")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
if (NOT _CMAKE_TOOLCHAIN_LOCATION)
|
|
get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_C_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_C_COMPILER_ID MATCHES "GNU|Clang|QCC")
|
|
get_filename_component(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
|
|
if (COMPILER_BASENAME MATCHES "^(.+-)(clang|g?cc)(-[0-9]+(\\.[0-9]+)*)?(-[^.]+)?(\\.exe)?$")
|
|
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
|
|
set(_CMAKE_COMPILER_SUFFIX ${CMAKE_MATCH_5})
|
|
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
|
|
if(CMAKE_C_COMPILER_TARGET)
|
|
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_C_COMPILER_TARGET}-)
|
|
endif()
|
|
elseif(COMPILER_BASENAME MATCHES "qcc(\\.exe)?$")
|
|
if(CMAKE_C_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 ${CMAKE_MATCH_1})
|
|
endif ()
|
|
elseif(CMAKE_C_COMPILER_ID MATCHES "TI")
|
|
# TI compilers are named e.g. cl6x, cl470 or armcl.exe
|
|
get_filename_component(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
|
|
if (COMPILER_BASENAME MATCHES "^(.+)?cl([^.]+)?(\\.exe)?$")
|
|
set(_CMAKE_TOOLCHAIN_PREFIX "${CMAKE_MATCH_1}")
|
|
set(_CMAKE_TOOLCHAIN_SUFFIX "${CMAKE_MATCH_2}")
|
|
endif ()
|
|
endif()
|
|
|
|
endif ()
|
|
|
|
set(_CMAKE_PROCESSING_LANGUAGE "C")
|
|
include(CMakeFindBinUtils)
|
|
include(Compiler/${CMAKE_C_COMPILER_ID}-FindBinUtils OPTIONAL)
|
|
unset(_CMAKE_PROCESSING_LANGUAGE)
|
|
|
|
if(CMAKE_C_COMPILER_ARCHITECTURE_ID)
|
|
set(_SET_CMAKE_C_COMPILER_ARCHITECTURE_ID
|
|
"set(CMAKE_C_COMPILER_ARCHITECTURE_ID ${CMAKE_C_COMPILER_ARCHITECTURE_ID})")
|
|
else()
|
|
set(_SET_CMAKE_C_COMPILER_ARCHITECTURE_ID "")
|
|
endif()
|
|
|
|
if(MSVC_C_ARCHITECTURE_ID)
|
|
set(SET_MSVC_C_ARCHITECTURE_ID
|
|
"set(MSVC_C_ARCHITECTURE_ID ${MSVC_C_ARCHITECTURE_ID})")
|
|
endif()
|
|
|
|
if(CMAKE_C_XCODE_ARCHS)
|
|
set(SET_CMAKE_XCODE_ARCHS
|
|
"set(CMAKE_XCODE_ARCHS \"${CMAKE_C_XCODE_ARCHS}\")")
|
|
endif()
|
|
|
|
# configure variables set in this file for fast reload later on
|
|
configure_file(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
|
|
${CMAKE_PLATFORM_INFO_DIR}/CMakeCCompiler.cmake
|
|
@ONLY
|
|
)
|
|
set(CMAKE_C_COMPILER_ENV_VAR "CC")
|