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authorAnas Nashif <anas.nashif@intel.com>2013-02-14 02:21:12 (GMT)
committerAnas Nashif <anas.nashif@intel.com>2013-02-14 02:21:12 (GMT)
commitef8aa19c33e83ff019595fd7f8fdc29c35c336a3 (patch)
tree6501b44707b5c6a88fa5f817adee1a3ffcb0012d /Modules/CMakeDetermineCXXCompiler.cmake
parent035c7fabc3b82cbc9a346c11abe2e9462b4c0379 (diff)
downloadcmake-ef8aa19c33e83ff019595fd7f8fdc29c35c336a3.zip
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Imported Upstream version 2.8.10.2upstream/2.8.10.2
Diffstat (limited to 'Modules/CMakeDetermineCXXCompiler.cmake')
-rw-r--r--Modules/CMakeDetermineCXXCompiler.cmake236
1 files changed, 110 insertions, 126 deletions
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index 7f8f3ec..59da3e6 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -30,123 +30,109 @@
# If not already set before, it also sets
# _CMAKE_TOOLCHAIN_PREFIX
-IF(NOT CMAKE_CXX_COMPILER)
- SET(CMAKE_CXX_COMPILER_INIT NOTFOUND)
-
- # prefer the environment variable CXX
- IF($ENV{CXX} MATCHES ".+")
- 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")
- ENDIF(CMAKE_CXX_FLAGS_ENV_INIT)
- IF(NOT EXISTS ${CMAKE_CXX_COMPILER_INIT})
- MESSAGE(FATAL_ERROR "Could not find compiler set in environment variable CXX:\n$ENV{CXX}.\n${CMAKE_CXX_COMPILER_INIT}")
- ENDIF(NOT EXISTS ${CMAKE_CXX_COMPILER_INIT})
- ENDIF($ENV{CXX} MATCHES ".+")
-
- # next prefer the generator specified compiler
- IF(CMAKE_GENERATOR_CXX)
- IF(NOT CMAKE_CXX_COMPILER_INIT)
- SET(CMAKE_CXX_COMPILER_INIT ${CMAKE_GENERATOR_CXX})
- ENDIF(NOT CMAKE_CXX_COMPILER_INIT)
- ENDIF(CMAKE_GENERATOR_CXX)
-
- # finally list compilers to try
- IF(CMAKE_CXX_COMPILER_INIT)
- SET(CMAKE_CXX_COMPILER_LIST ${CMAKE_CXX_COMPILER_INIT})
- ELSE(CMAKE_CXX_COMPILER_INIT)
- SET(CMAKE_CXX_COMPILER_LIST ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ CC aCC cl bcc xlC)
- ENDIF(CMAKE_CXX_COMPILER_INIT)
-
- # Find the compiler.
- IF (_CMAKE_USER_C_COMPILER_PATH)
- FIND_PROGRAM(CMAKE_CXX_COMPILER NAMES ${CMAKE_CXX_COMPILER_LIST} PATHS ${_CMAKE_USER_C_COMPILER_PATH} DOC "C++ compiler" NO_DEFAULT_PATH)
- ENDIF (_CMAKE_USER_C_COMPILER_PATH)
- FIND_PROGRAM(CMAKE_CXX_COMPILER NAMES ${CMAKE_CXX_COMPILER_LIST} DOC "C++ compiler")
-
- IF(CMAKE_CXX_COMPILER_INIT AND NOT CMAKE_CXX_COMPILER)
- SET(CMAKE_CXX_COMPILER "${CMAKE_CXX_COMPILER_INIT}" CACHE FILEPATH "C++ compiler" FORCE)
- ENDIF(CMAKE_CXX_COMPILER_INIT AND NOT CMAKE_CXX_COMPILER)
-ELSE(NOT CMAKE_CXX_COMPILER)
-
-# 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("${_CMAKE_CXX_COMPILER_LIST_LENGTH}" EQUAL 2)
- LIST(GET CMAKE_CXX_COMPILER 1 CMAKE_CXX_COMPILER_ARG1)
- LIST(GET CMAKE_CXX_COMPILER 0 CMAKE_CXX_COMPILER)
- ENDIF("${_CMAKE_CXX_COMPILER_LIST_LENGTH}" EQUAL 2)
-
-# 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 ${CMAKE_CXX_COMPILER_WITH_PATH} CACHE STRING "CXX compiler" FORCE)
- ENDIF(CMAKE_CXX_COMPILER_WITH_PATH)
- ENDIF(NOT _CMAKE_USER_CXX_COMPILER_PATH)
-ENDIF(NOT CMAKE_CXX_COMPILER)
-MARK_AS_ADVANCED(CMAKE_CXX_COMPILER)
-
-IF (NOT _CMAKE_TOOLCHAIN_LOCATION)
- GET_FILENAME_COMPONENT(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_CXX_COMPILER}" PATH)
-ENDIF (NOT _CMAKE_TOOLCHAIN_LOCATION)
-
-# This block was used before the compiler was identified by building a
-# source file. Unless g++ crashes when building a small C++
-# executable this should no longer be needed.
-#
-# The g++ that comes with BeOS 5 segfaults if you run "g++ -E"
-# ("gcc -E" is fine), which throws up a system dialog box that hangs cmake
-# until the user clicks "OK"...so for now, we just assume it's g++.
-# IF(BEOS)
-# SET(CMAKE_COMPILER_IS_GNUCXX 1)
-# SET(CMAKE_COMPILER_IS_GNUCXX_RUN 1)
-# ENDIF(BEOS)
-
-# Build a small source file to identify the compiler.
-IF(${CMAKE_GENERATOR} MATCHES "Visual Studio")
- SET(CMAKE_CXX_COMPILER_ID_RUN 1)
- SET(CMAKE_CXX_PLATFORM_ID "Windows")
- SET(CMAKE_CXX_COMPILER_ID "MSVC")
-ENDIF(${CMAKE_GENERATOR} MATCHES "Visual Studio")
-IF(NOT CMAKE_CXX_COMPILER_ID_RUN)
- SET(CMAKE_CXX_COMPILER_ID_RUN 1)
+include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
+
+# Load system-specific compiler preferences for this language.
+include(Platform/${CMAKE_SYSTEM_NAME}-CXX OPTIONAL)
+if(NOT CMAKE_CXX_COMPILER_NAMES)
+ set(CMAKE_CXX_COMPILER_NAMES CC)
+endif()
+
+if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
+elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
+ set(CMAKE_CXX_COMPILER_XCODE_TYPE sourcecode.cpp.cpp)
+else()
+ if(NOT CMAKE_CXX_COMPILER)
+ set(CMAKE_CXX_COMPILER_INIT NOTFOUND)
+
+ # prefer the environment variable CXX
+ if($ENV{CXX} MATCHES ".+")
+ 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")
+ endif()
+ if(NOT EXISTS ${CMAKE_CXX_COMPILER_INIT})
+ message(FATAL_ERROR "Could not find compiler set in environment variable CXX:\n$ENV{CXX}.\n${CMAKE_CXX_COMPILER_INIT}")
+ endif()
+ endif()
+
+ # next prefer the generator specified compiler
+ if(CMAKE_GENERATOR_CXX)
+ if(NOT CMAKE_CXX_COMPILER_INIT)
+ set(CMAKE_CXX_COMPILER_INIT ${CMAKE_GENERATOR_CXX})
+ endif()
+ endif()
+
+ # finally list compilers to try
+ if(NOT CMAKE_CXX_COMPILER_INIT)
+ set(CMAKE_CXX_COMPILER_LIST CC ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ aCC cl bcc xlC clang++)
+ endif()
+
+ _cmake_find_compiler(CXX)
+ else()
+
+ # we only get here if CMAKE_CXX_COMPILER was specified using -D or a pre-made CMakeCache.txt
+ # (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
+ #
+ # if CMAKE_CXX_COMPILER is a list of length 2, use the first item as
+ # CMAKE_CXX_COMPILER and the 2nd one as CMAKE_CXX_COMPILER_ARG1
+
+ list(LENGTH CMAKE_CXX_COMPILER _CMAKE_CXX_COMPILER_LIST_LENGTH)
+ if("${_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()
+ 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
+ set(CMAKE_CXX_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_CXX_COMPILER_ID_RUN)
+ set(CMAKE_CXX_COMPILER_ID_RUN 1)
# Try to identify the compiler.
- SET(CMAKE_CXX_COMPILER_ID)
- FILE(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
+ set(CMAKE_CXX_COMPILER_ID)
+ file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
CMAKE_CXX_COMPILER_ID_PLATFORM_CONTENT)
- INCLUDE(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
+ 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")
- SET(CMAKE_COMPILER_IS_GNUCXX 1)
- ENDIF("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
- IF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
- SET(CMAKE_COMPILER_IS_MINGW 1)
- ELSEIF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "Cygwin")
- SET(CMAKE_COMPILER_IS_CYGWIN 1)
- ENDIF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
-ENDIF(NOT CMAKE_CXX_COMPILER_ID_RUN)
+ if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+ set(CMAKE_COMPILER_IS_GNUCXX 1)
+ endif()
+ if("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
+ set(CMAKE_COMPILER_IS_MINGW 1)
+ elseif("${CMAKE_CXX_PLATFORM_ID}" MATCHES "Cygwin")
+ set(CMAKE_COMPILER_IS_CYGWIN 1)
+ endif()
+endif()
+
+if (NOT _CMAKE_TOOLCHAIN_LOCATION)
+ get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_CXX_COMPILER}" PATH)
+endif ()
# if we have a g++ cross compiler, they have usually some prefix, like
# e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++ , optionally
@@ -155,34 +141,32 @@ ENDIF(NOT CMAKE_CXX_COMPILER_ID_RUN)
# NAME_WE cannot be used since then this test will fail for names lile
# "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
+if (CMAKE_CROSSCOMPILING
AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU"
AND NOT _CMAKE_TOOLCHAIN_PREFIX)
- GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
- IF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
- SET(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
- ENDIF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+ get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
+ if (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+ set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+ endif ()
# if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
# but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
- IF ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
- SET(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
- ENDIF ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
-
-ENDIF (CMAKE_CROSSCOMPILING
- AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU"
- AND NOT _CMAKE_TOOLCHAIN_PREFIX)
-
-INCLUDE(${CMAKE_ROOT}/Modules/CMakeClDeps.cmake)
-INCLUDE(CMakeFindBinUtils)
-IF(MSVC_CXX_ARCHITECTURE_ID)
- SET(SET_MSVC_CXX_ARCHITECTURE_ID
- "SET(MSVC_CXX_ARCHITECTURE_ID ${MSVC_CXX_ARCHITECTURE_ID})")
-ENDIF(MSVC_CXX_ARCHITECTURE_ID)
+ if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
+ set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+ endif ()
+
+endif ()
+
+include(${CMAKE_ROOT}/Modules/CMakeClDeps.cmake)
+include(CMakeFindBinUtils)
+if(MSVC_CXX_ARCHITECTURE_ID)
+ set(SET_MSVC_CXX_ARCHITECTURE_ID
+ "set(MSVC_CXX_ARCHITECTURE_ID ${MSVC_CXX_ARCHITECTURE_ID})")
+endif()
# configure all variables set in this file
-CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
- ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake
+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
)
-SET(CMAKE_CXX_COMPILER_ENV_VAR "CXX")
+set(CMAKE_CXX_COMPILER_ENV_VAR "CXX")