mirror of
https://github.com/reactos/CMake.git
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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
219 lines
7.2 KiB
CMake
219 lines
7.2 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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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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include(CMakeLanguageInformation)
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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()
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set(CMAKE_C_OUTPUT_EXTENSION .obj)
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endif()
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set(_INCLUDED_FILE 0)
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# Load compiler-specific information.
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if(CMAKE_C_COMPILER_ID)
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include(Compiler/${CMAKE_C_COMPILER_ID}-C OPTIONAL)
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endif()
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set(CMAKE_BASE_NAME)
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get_filename_component(CMAKE_BASE_NAME "${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()
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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-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
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endif()
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if (NOT _INCLUDED_FILE)
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include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL)
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endif ()
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endif()
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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
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OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
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endif()
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if (NOT _INCLUDED_FILE)
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include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}
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OPTIONAL RESULT_VARIABLE _INCLUDED_FILE)
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endif ()
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# load any compiler-wrapper specific information
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if (CMAKE_C_COMPILER_WRAPPER)
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__cmake_include_compiler_wrapper(C)
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endif ()
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# We specify the compiler information in the system file for some
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# platforms, but this language may not have been enabled when the file
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# was first included. Include it again to get the language info.
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# Remove this when all compiler info is removed from system files.
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if (NOT _INCLUDED_FILE)
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include(Platform/${CMAKE_SYSTEM_NAME} OPTIONAL)
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endif ()
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if(CMAKE_C_SIZEOF_DATA_PTR)
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foreach(f ${CMAKE_C_ABI_FILES})
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include(${f})
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endforeach()
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unset(CMAKE_C_ABI_FILES)
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endif()
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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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# Save the full path of the file so try_compile can use it.
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include(${CMAKE_USER_MAKE_RULES_OVERRIDE} RESULT_VARIABLE _override)
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set(CMAKE_USER_MAKE_RULES_OVERRIDE "${_override}")
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endif()
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if(CMAKE_USER_MAKE_RULES_OVERRIDE_C)
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# Save the full path of the file so try_compile can use it.
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include(${CMAKE_USER_MAKE_RULES_OVERRIDE_C} RESULT_VARIABLE _override)
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set(CMAKE_USER_MAKE_RULES_OVERRIDE_C "${_override}")
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endif()
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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 ${CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS})
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endif()
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set(CMAKE_C_FLAGS_INIT "$ENV{CFLAGS} ${CMAKE_C_FLAGS_INIT}")
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foreach(c "" _DEBUG _RELEASE _MINSIZEREL _RELWITHDEBINFO)
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string(STRIP "${CMAKE_C_FLAGS${c}_INIT}" CMAKE_C_FLAGS${c}_INIT)
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endforeach()
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS_INIT}" CACHE STRING
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"Flags used by the compiler during all build types.")
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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 ${CMAKE_BUILD_TYPE_INIT} CACHE STRING
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"Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
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endif()
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set (CMAKE_C_FLAGS_DEBUG "${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 "${CMAKE_C_FLAGS_MINSIZEREL_INIT}" CACHE STRING
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"Flags used by the compiler during release builds for minimum size.")
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set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE_INIT}" CACHE STRING
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"Flags used by the compiler during release builds.")
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set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO_INIT}" CACHE STRING
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"Flags used by the compiler during release builds with debug info.")
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endif()
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if(CMAKE_C_STANDARD_LIBRARIES_INIT)
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set(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES_INIT}"
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CACHE STRING "Libraries linked by default with all C applications.")
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mark_as_advanced(CMAKE_C_STANDARD_LIBRARIES)
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endif()
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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_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> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
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endif()
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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()
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# Create a static archive incrementally for large object file counts.
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# If CMAKE_C_CREATE_STATIC_LIBRARY is set it will override these.
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if(NOT DEFINED CMAKE_C_ARCHIVE_CREATE)
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set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> qc <TARGET> <LINK_FLAGS> <OBJECTS>")
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endif()
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if(NOT DEFINED CMAKE_C_ARCHIVE_APPEND)
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set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> q <TARGET> <LINK_FLAGS> <OBJECTS>")
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endif()
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if(NOT DEFINED CMAKE_C_ARCHIVE_FINISH)
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set(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> <TARGET>")
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endif()
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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> <DEFINES> <INCLUDES> <FLAGS> -o <OBJECT> -c <SOURCE>")
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endif()
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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()
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if(NOT CMAKE_EXECUTABLE_RUNTIME_C_FLAG)
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set(CMAKE_EXECUTABLE_RUNTIME_C_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG})
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endif()
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if(NOT CMAKE_EXECUTABLE_RUNTIME_C_FLAG_SEP)
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set(CMAKE_EXECUTABLE_RUNTIME_C_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP})
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endif()
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if(NOT CMAKE_EXECUTABLE_RPATH_LINK_C_FLAG)
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set(CMAKE_EXECUTABLE_RPATH_LINK_C_FLAG ${CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG})
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endif()
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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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