mirror of
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930bb0cd37
CMAKE_SYSTEM_AND_C_COMPILER_INFO_FILE, CMAKE_SYSTEM_AND_CXX_COMPILER_INFO_FILE, CMAKE_SYSTEM_AND_C_COMPILER_AND_PROCESSOR_INFO_FILE and CMAKE_SYSTEM_AND_CXX_COMPILER_AND_PROCESSOR_INFO_FILE Instead of presetting these variables to arbitrary filenames, users should set up CMAKE_SYSTEM_NAME and the compilers correctly and also create a Platform/ directory so these files will all follow the official cmake style, which should make it easier to understand and debug project which have their own platform/toolchain support files. -remove support for a suffix to MS crosscompilers, since this is not (yet) supported by cmake and might confuse users Alex
159 lines
5.6 KiB
CMake
159 lines
5.6 KiB
CMake
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# This file sets the basic flags for the C language in CMake.
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# It also loads the available platform file for the system-compiler
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# if it exists.
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# It also loads a system - compiler - processor (or target hardware)
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# specific file, which is mainly useful for crosscompiling and embedded systems.
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# some compilers use different extensions (e.g. sdcc uses .rel)
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# so set the extension here first so it can be overridden by the compiler specific file
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IF(UNIX)
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SET(CMAKE_C_OUTPUT_EXTENSION .o)
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ELSE(UNIX)
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SET(CMAKE_C_OUTPUT_EXTENSION .obj)
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ENDIF(UNIX)
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GET_FILENAME_COMPONENT(CMAKE_BASE_NAME ${CMAKE_C_COMPILER} NAME_WE)
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IF(CMAKE_COMPILER_IS_GNUCC)
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SET(CMAKE_BASE_NAME gcc)
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ENDIF(CMAKE_COMPILER_IS_GNUCC)
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# load a hardware specific file, mostly useful for embedded compilers
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IF(CMAKE_SYSTEM_PROCESSOR)
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IF(CMAKE_C_COMPILER_ID)
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INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_C_COMPILER_ID}-C-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
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ENDIF(CMAKE_C_COMPILER_ID)
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IF (NOT _INCLUDED_FILE)
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INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL)
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ENDIF (NOT _INCLUDED_FILE)
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ENDIF(CMAKE_SYSTEM_PROCESSOR)
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# load the system- and compiler specific files
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IF(CMAKE_C_COMPILER_ID)
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INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_C_COMPILER_ID}-C OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
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ENDIF(CMAKE_C_COMPILER_ID)
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IF (NOT _INCLUDED_FILE)
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INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME} OPTIONAL)
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ENDIF (NOT _INCLUDED_FILE)
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# This should be included before the _INIT variables are
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# used to initialize the cache. Since the rule variables
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# have if blocks on them, users can still define them here.
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# But, it should still be after the platform file so changes can
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# be made to those values.
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IF(CMAKE_USER_MAKE_RULES_OVERRIDE)
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INCLUDE(${CMAKE_USER_MAKE_RULES_OVERRIDE})
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ENDIF(CMAKE_USER_MAKE_RULES_OVERRIDE)
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IF(CMAKE_USER_MAKE_RULES_OVERRIDE_C)
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INCLUDE(${CMAKE_USER_MAKE_RULES_OVERRIDE_C})
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ENDIF(CMAKE_USER_MAKE_RULES_OVERRIDE_C)
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# for most systems a module is the same as a shared library
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# so unless the variable CMAKE_MODULE_EXISTS is set just
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# copy the values from the LIBRARY variables
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IF(NOT CMAKE_MODULE_EXISTS)
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SET(CMAKE_SHARED_MODULE_C_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
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SET(CMAKE_SHARED_MODULE_CREATE_C_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS})
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ENDIF(NOT CMAKE_MODULE_EXISTS)
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SET (CMAKE_C_FLAGS "$ENV{CFLAGS} ${CMAKE_C_FLAGS_INIT}" CACHE STRING
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"Flags for C compiler.")
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IF(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
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# default build type is none
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IF(NOT CMAKE_NO_BUILD_TYPE)
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SET (CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE_INIT} CACHE STRING
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"Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
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ENDIF(NOT CMAKE_NO_BUILD_TYPE)
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SET (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG_INIT}" CACHE STRING
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"Flags used by the compiler during debug builds.")
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SET (CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL_INIT}" CACHE STRING
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"Flags used by the compiler during release minsize builds.")
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SET (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE_INIT}" CACHE STRING
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"Flags used by the compiler during release builds (/MD /Ob1 /Oi /Ot /Oy /Gs will produce slightly less optimized but smaller files).")
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SET (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO_INIT}" CACHE STRING
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"Flags used by the compiler during Release with Debug Info builds.")
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ENDIF(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
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IF(CMAKE_C_STANDARD_LIBRARIES_INIT)
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SET(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES_INIT}"
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CACHE STRING "Libraries linked by defalut with all C applications.")
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MARK_AS_ADVANCED(CMAKE_C_STANDARD_LIBRARIES)
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ENDIF(CMAKE_C_STANDARD_LIBRARIES_INIT)
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INCLUDE(CMakeCommonLanguageInclude)
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# now define the following rule variables
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# CMAKE_C_CREATE_SHARED_LIBRARY
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# CMAKE_C_CREATE_SHARED_MODULE
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# CMAKE_C_CREATE_STATIC_LIBRARY
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# CMAKE_C_COMPILE_OBJECT
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# CMAKE_C_LINK_EXECUTABLE
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# variables supplied by the generator at use time
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# <TARGET>
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# <TARGET_BASE> the target without the suffix
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# <OBJECTS>
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# <OBJECT>
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# <LINK_LIBRARIES>
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# <FLAGS>
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# <LINK_FLAGS>
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# C compiler information
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# <CMAKE_C_COMPILER>
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# <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS>
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# <CMAKE_SHARED_MODULE_CREATE_C_FLAGS>
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# <CMAKE_C_LINK_FLAGS>
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# Static library tools
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# <CMAKE_AR>
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# <CMAKE_RANLIB>
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# create a C shared library
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IF(NOT CMAKE_C_CREATE_SHARED_LIBRARY)
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SET(CMAKE_C_CREATE_SHARED_LIBRARY
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"<CMAKE_C_COMPILER> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> <CMAKE_SHARED_LIBRARY_SONAME_C_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
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ENDIF(NOT CMAKE_C_CREATE_SHARED_LIBRARY)
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# create a C shared module just copy the shared library rule
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IF(NOT CMAKE_C_CREATE_SHARED_MODULE)
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SET(CMAKE_C_CREATE_SHARED_MODULE ${CMAKE_C_CREATE_SHARED_LIBRARY})
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ENDIF(NOT CMAKE_C_CREATE_SHARED_MODULE)
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# create a C static library
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IF(NOT CMAKE_C_CREATE_STATIC_LIBRARY)
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SET(CMAKE_C_CREATE_STATIC_LIBRARY
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"<CMAKE_AR> cr <TARGET> <LINK_FLAGS> <OBJECTS> "
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"<CMAKE_RANLIB> <TARGET> ")
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ENDIF(NOT CMAKE_C_CREATE_STATIC_LIBRARY)
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# compile a C file into an object file
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IF(NOT CMAKE_C_COMPILE_OBJECT)
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SET(CMAKE_C_COMPILE_OBJECT
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"<CMAKE_C_COMPILER> <FLAGS> -o <OBJECT> -c <SOURCE>")
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ENDIF(NOT CMAKE_C_COMPILE_OBJECT)
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IF(NOT CMAKE_C_LINK_EXECUTABLE)
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SET(CMAKE_C_LINK_EXECUTABLE
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"<CMAKE_C_COMPILER> <FLAGS> <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
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ENDIF(NOT CMAKE_C_LINK_EXECUTABLE)
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MARK_AS_ADVANCED(
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CMAKE_C_FLAGS
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CMAKE_C_FLAGS_DEBUG
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CMAKE_C_FLAGS_MINSIZEREL
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CMAKE_C_FLAGS_RELEASE
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CMAKE_C_FLAGS_RELWITHDEBINFO
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)
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SET(CMAKE_C_INFORMATION_LOADED 1)
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