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-rw-r--r--Modules/CMakeDetermineCXXCompiler.cmake90
1 files changed, 42 insertions, 48 deletions
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index c79ba898d..9150962d9 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -1,16 +1,6 @@
+# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
-#=============================================================================
-# Copyright 2002-2009 Kitware, Inc.
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-# License text for the above reference.)
# determine the compiler to use for C++ programs
# NOTE, a generator may set CMAKE_CXX_COMPILER before
@@ -33,6 +23,7 @@
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
# Load system-specific compiler preferences for this language.
+include(Platform/${CMAKE_SYSTEM_NAME}-Determine-CXX OPTIONAL)
include(Platform/${CMAKE_SYSTEM_NAME}-CXX OPTIONAL)
if(NOT CMAKE_CXX_COMPILER_NAMES)
set(CMAKE_CXX_COMPILER_NAMES CC)
@@ -41,12 +32,13 @@ endif()
if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
set(CMAKE_CXX_COMPILER_XCODE_TYPE sourcecode.cpp.cpp)
+ _cmake_find_compiler_path(CXX)
else()
if(NOT CMAKE_CXX_COMPILER)
set(CMAKE_CXX_COMPILER_INIT NOTFOUND)
# prefer the environment variable CXX
- if($ENV{CXX} MATCHES ".+")
+ if(NOT $ENV{CXX} STREQUAL "")
get_filename_component(CMAKE_CXX_COMPILER_INIT $ENV{CXX} PROGRAM PROGRAM_ARGS CMAKE_CXX_FLAGS_ENV_INIT)
if(CMAKE_CXX_FLAGS_ENV_INIT)
set(CMAKE_CXX_COMPILER_ARG1 "${CMAKE_CXX_FLAGS_ENV_INIT}" CACHE STRING "First argument to CXX compiler")
@@ -70,38 +62,14 @@ else()
_cmake_find_compiler(CXX)
else()
-
- # we only get here if CMAKE_CXX_COMPILER was specified using -D or a pre-made CMakeCache.txt
- # (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
- #
- # if CMAKE_CXX_COMPILER is a list of length 2, use the first item as
- # CMAKE_CXX_COMPILER and the 2nd one as CMAKE_CXX_COMPILER_ARG1
-
- list(LENGTH CMAKE_CXX_COMPILER _CMAKE_CXX_COMPILER_LIST_LENGTH)
- if("${_CMAKE_CXX_COMPILER_LIST_LENGTH}" EQUAL 2)
- list(GET CMAKE_CXX_COMPILER 1 CMAKE_CXX_COMPILER_ARG1)
- list(GET CMAKE_CXX_COMPILER 0 CMAKE_CXX_COMPILER)
- endif()
-
- # if a compiler was specified by the user but without path,
- # now try to find it with the full path
- # if it is found, force it into the cache,
- # if not, don't overwrite the setting (which was given by the user) with "NOTFOUND"
- # if the CXX compiler already had a path, reuse it for searching the C compiler
- get_filename_component(_CMAKE_USER_CXX_COMPILER_PATH "${CMAKE_CXX_COMPILER}" PATH)
- if(NOT _CMAKE_USER_CXX_COMPILER_PATH)
- find_program(CMAKE_CXX_COMPILER_WITH_PATH NAMES ${CMAKE_CXX_COMPILER})
- mark_as_advanced(CMAKE_CXX_COMPILER_WITH_PATH)
- if(CMAKE_CXX_COMPILER_WITH_PATH)
- set(CMAKE_CXX_COMPILER ${CMAKE_CXX_COMPILER_WITH_PATH} CACHE STRING "CXX compiler" FORCE)
- endif()
- endif()
+ _cmake_find_compiler_path(CXX)
endif()
mark_as_advanced(CMAKE_CXX_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_CXX_COMPILER_ID_TEST_FLAGS_FIRST)
set(CMAKE_CXX_COMPILER_ID_TEST_FLAGS
# Try compiling to an object file only.
"-c"
@@ -114,25 +82,34 @@ if(NOT CMAKE_CXX_COMPILER_ID_RUN)
# Try to identify the compiler.
set(CMAKE_CXX_COMPILER_ID)
+ set(CMAKE_CXX_PLATFORM_ID)
file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
CMAKE_CXX_COMPILER_ID_PLATFORM_CONTENT)
# The IAR compiler produces weird output.
- # See http://www.cmake.org/Bug/view.php?id=10176#c19598
+ # See https://gitlab.kitware.com/cmake/cmake/issues/10176#note_153591
list(APPEND CMAKE_CXX_COMPILER_ID_VENDORS IAR)
set(CMAKE_CXX_COMPILER_ID_VENDOR_FLAGS_IAR )
set(CMAKE_CXX_COMPILER_ID_VENDOR_REGEX_IAR "IAR .+ Compiler")
+ # Match the link line from xcodebuild output of the form
+ # Ld ...
+ # ...
+ # /path/to/cc ...CompilerIdCXX/...
+ # to extract the compiler front-end for the language.
+ set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdCXX/(\\./)?(CompilerIdCXX.xctest/)?CompilerIdCXX[ \t\n\\\"]")
+ set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_INDEX 2)
+
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
CMAKE_DETERMINE_COMPILER_ID(CXX CXXFLAGS CMakeCXXCompilerId.cpp)
# Set old compiler and platform id variables.
- if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(CMAKE_COMPILER_IS_GNUCXX 1)
endif()
- if("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
+ if(CMAKE_CXX_PLATFORM_ID MATCHES "MinGW")
set(CMAKE_COMPILER_IS_MINGW 1)
- elseif("${CMAKE_CXX_PLATFORM_ID}" MATCHES "Cygwin")
+ elseif(CMAKE_CXX_PLATFORM_ID MATCHES "Cygwin")
set(CMAKE_COMPILER_IS_CYGWIN 1)
endif()
endif()
@@ -145,17 +122,25 @@ endif ()
# e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++ , optionally
# with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).
# The other tools of the toolchain usually have the same prefix
-# NAME_WE cannot be used since then this test will fail for names lile
+# NAME_WE cannot be used since then this test will fail for names like
# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
if (CMAKE_CROSSCOMPILING AND NOT _CMAKE_TOOLCHAIN_PREFIX)
- if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+ if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
- if (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+ if (COMPILER_BASENAME MATCHES "^(.+-)(clan)?[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+ elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+ if(CMAKE_CXX_COMPILER_TARGET)
+ set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_CXX_COMPILER_TARGET}-)
+ endif()
+ elseif(COMPILER_BASENAME MATCHES "QCC(\\.exe)?$")
+ if(CMAKE_CXX_COMPILER_TARGET MATCHES "gcc_nto([^_le]+)(le)?")
+ set(_CMAKE_TOOLCHAIN_PREFIX nto${CMAKE_MATCH_1}-)
+ endif()
endif ()
# if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
@@ -175,16 +160,25 @@ if (CMAKE_CROSSCOMPILING AND NOT _CMAKE_TOOLCHAIN_PREFIX)
endif ()
-include(${CMAKE_ROOT}/Modules/CMakeClDeps.cmake)
include(CMakeFindBinUtils)
+set(_CMAKE_PROCESSING_LANGUAGE "CXX")
+include(Compiler/${CMAKE_CXX_COMPILER_ID}-FindBinUtils OPTIONAL)
+unset(_CMAKE_PROCESSING_LANGUAGE)
+
if(MSVC_CXX_ARCHITECTURE_ID)
set(SET_MSVC_CXX_ARCHITECTURE_ID
"set(MSVC_CXX_ARCHITECTURE_ID ${MSVC_CXX_ARCHITECTURE_ID})")
endif()
+
+if(CMAKE_CXX_XCODE_CURRENT_ARCH)
+ set(SET_CMAKE_XCODE_CURRENT_ARCH
+ "set(CMAKE_XCODE_CURRENT_ARCH ${CMAKE_CXX_XCODE_CURRENT_ARCH})")
+endif()
+
# configure all variables set in this file
configure_file(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
${CMAKE_PLATFORM_INFO_DIR}/CMakeCXXCompiler.cmake
- @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
+ @ONLY
)
set(CMAKE_CXX_COMPILER_ENV_VAR "CXX")