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@ -15,14 +15,14 @@
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# determine the compiler to use for C programs
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# NOTE, a generator may set CMAKE_C_COMPILER before
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# loading this file to force a compiler.
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# use environment variable CC first if defined by user, next use
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# use environment variable CC first if defined by user, next use
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# the cmake variable CMAKE_GENERATOR_CC 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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# 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-gcc, arm-elf-ar etc.). This works
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# currently with the GNU crosscompilers.
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#
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# Sets the following variables:
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# Sets the following variables:
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# CMAKE_C_COMPILER
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# CMAKE_AR
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# CMAKE_RANLIB
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@ -41,12 +41,12 @@ IF(NOT CMAKE_C_COMPILER)
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SET(CMAKE_C_COMPILER_ARG1 "${CMAKE_C_FLAGS_ENV_INIT}" CACHE STRING "First argument to C compiler")
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ENDIF(CMAKE_C_FLAGS_ENV_INIT)
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IF(NOT EXISTS ${CMAKE_C_COMPILER_INIT})
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MESSAGE(FATAL_ERROR "Could not find compiler set in environment variable CC:\n$ENV{CC}.")
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MESSAGE(FATAL_ERROR "Could not find compiler set in environment variable CC:\n$ENV{CC}.")
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ENDIF(NOT EXISTS ${CMAKE_C_COMPILER_INIT})
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ENDIF($ENV{CC} MATCHES ".+")
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# next try prefer the compiler specified by the generator
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IF(CMAKE_GENERATOR_CC)
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IF(CMAKE_GENERATOR_CC)
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IF(NOT CMAKE_C_COMPILER_INIT)
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SET(CMAKE_C_COMPILER_INIT ${CMAKE_GENERATOR_CC})
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ENDIF(NOT CMAKE_C_COMPILER_INIT)
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@ -64,7 +64,7 @@ IF(NOT CMAKE_C_COMPILER)
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FIND_PROGRAM(CMAKE_C_COMPILER NAMES ${CMAKE_C_COMPILER_LIST} PATHS ${_CMAKE_USER_CXX_COMPILER_PATH} DOC "C compiler" NO_DEFAULT_PATH)
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ENDIF (_CMAKE_USER_CXX_COMPILER_PATH)
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FIND_PROGRAM(CMAKE_C_COMPILER NAMES ${CMAKE_C_COMPILER_LIST} DOC "C compiler")
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IF(CMAKE_C_COMPILER_INIT AND NOT CMAKE_C_COMPILER)
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SET(CMAKE_C_COMPILER "${CMAKE_C_COMPILER_INIT}" CACHE FILEPATH "C compiler" FORCE)
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ENDIF(CMAKE_C_COMPILER_INIT AND NOT CMAKE_C_COMPILER)
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@ -72,7 +72,7 @@ ELSE(NOT CMAKE_C_COMPILER)
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# we only get here if CMAKE_C_COMPILER was specified using -D or a pre-made CMakeCache.txt
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# (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
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# if CMAKE_C_COMPILER is a list of length 2, use the first item as
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# if CMAKE_C_COMPILER is a list of length 2, use the first item as
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# CMAKE_C_COMPILER and the 2nd one as CMAKE_C_COMPILER_ARG1
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LIST(LENGTH CMAKE_C_COMPILER _CMAKE_C_COMPILER_LIST_LENGTH)
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@ -81,9 +81,9 @@ ELSE(NOT CMAKE_C_COMPILER)
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LIST(GET CMAKE_C_COMPILER 0 CMAKE_C_COMPILER)
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ENDIF("${_CMAKE_C_COMPILER_LIST_LENGTH}" EQUAL 2)
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# if a compiler was specified by the user but without path,
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# if a compiler was specified by the user but without path,
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# now try to find it with the full path
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# if it is found, force it into the cache,
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# if it is found, force it into the cache,
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# if not, don't overwrite the setting (which was given by the user) with "NOTFOUND"
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# if the C compiler already had a path, reuse it for searching the CXX compiler
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GET_FILENAME_COMPONENT(_CMAKE_USER_C_COMPILER_PATH "${CMAKE_C_COMPILER}" PATH)
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@ -143,19 +143,20 @@ IF(NOT CMAKE_C_COMPILER_ID_RUN)
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ENDIF("${CMAKE_C_PLATFORM_ID}" MATCHES "MinGW")
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ENDIF(NOT CMAKE_C_COMPILER_ID_RUN)
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# If we have a gcc cross compiler, they have usually some prefix, like
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# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc .
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# If we have a gcc cross compiler, they have usually some prefix, like
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# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc, optionally
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# with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).
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# The other tools of the toolchain usually have the same prefix
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# NAME_WE cannot be used since then this test will fail for names lile
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# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
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# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
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# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
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IF (CMAKE_CROSSCOMPILING
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IF (CMAKE_CROSSCOMPILING
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AND "${CMAKE_C_COMPILER_ID}" MATCHES "GNU"
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AND NOT _CMAKE_TOOLCHAIN_PREFIX)
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GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
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IF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(\\.exe)?$")
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IF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
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SET(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
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ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(\\.exe)?$")
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ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
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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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@ -163,7 +164,7 @@ IF (CMAKE_CROSSCOMPILING
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SET(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
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ENDIF ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
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ENDIF (CMAKE_CROSSCOMPILING
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ENDIF (CMAKE_CROSSCOMPILING
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AND "${CMAKE_C_COMPILER_ID}" MATCHES "GNU"
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AND NOT _CMAKE_TOOLCHAIN_PREFIX)
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@ -179,5 +180,5 @@ ENDIF(MSVC_C_ARCHITECTURE_ID)
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CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
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"${CMAKE_PLATFORM_ROOT_BIN}/CMakeCCompiler.cmake"
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@ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
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)
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)
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SET(CMAKE_C_COMPILER_ENV_VAR "CC")
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Kai Wasserbäch
14 years ago