mirror of
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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copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong.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.
185 lines
7.3 KiB
CMake
185 lines
7.3 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 module is used by the Makefile generator to determin the following variables:
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# CMAKE_SYSTEM_NAME - on unix this is uname -s, for windows it is Windows
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# CMAKE_SYSTEM_VERSION - on unix this is uname -r, for windows it is empty
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# CMAKE_SYSTEM - ${CMAKE_SYSTEM}-${CMAKE_SYSTEM_VERSION}, for windows: ${CMAKE_SYSTEM}
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#
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# Expected uname -s output:
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#
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# AIX AIX
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# BSD/OS BSD/OS
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# FreeBSD FreeBSD
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# HP-UX HP-UX
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# IRIX IRIX
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# Linux Linux
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# GNU/kFreeBSD GNU/kFreeBSD
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# NetBSD NetBSD
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# OpenBSD OpenBSD
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# OFS/1 (Digital Unix) OSF1
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# SCO OpenServer 5 SCO_SV
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# SCO UnixWare 7 UnixWare
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# SCO UnixWare (pre release 7) UNIX_SV
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# SCO XENIX Xenix
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# Solaris SunOS
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# SunOS SunOS
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# Tru64 Tru64
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# Ultrix ULTRIX
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# cygwin CYGWIN_NT-5.1
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# MacOSX Darwin
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# find out on which system cmake runs
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if(CMAKE_HOST_UNIX)
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find_program(CMAKE_UNAME uname /bin /usr/bin /usr/local/bin )
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if(CMAKE_UNAME)
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exec_program(uname ARGS -s OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_NAME)
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exec_program(uname ARGS -r OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION)
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if(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|CYGWIN.*|Darwin|^GNU$")
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exec_program(uname ARGS -m OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RETURN_VALUE val)
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin" AND
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CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "Power Macintosh")
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# OS X ppc 'uname -m' may report 'Power Macintosh' instead of 'powerpc'
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set(CMAKE_HOST_SYSTEM_PROCESSOR "powerpc")
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endif()
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elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "OpenBSD")
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exec_program(arch ARGS -s OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RETURN_VALUE val)
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else()
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exec_program(uname ARGS -p OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RETURN_VALUE val)
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if("${val}" GREATER 0)
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exec_program(uname ARGS -m OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RETURN_VALUE val)
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endif()
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endif()
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# check the return of the last uname -m or -p
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if("${val}" GREATER 0)
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set(CMAKE_HOST_SYSTEM_PROCESSOR "unknown")
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endif()
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set(CMAKE_UNAME ${CMAKE_UNAME} CACHE INTERNAL "uname command")
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# processor may have double quote in the name, and that needs to be removed
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string(REPLACE "\"" "" CMAKE_HOST_SYSTEM_PROCESSOR "${CMAKE_HOST_SYSTEM_PROCESSOR}")
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string(REPLACE "/" "_" CMAKE_HOST_SYSTEM_PROCESSOR "${CMAKE_HOST_SYSTEM_PROCESSOR}")
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endif()
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else()
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if(CMAKE_HOST_WIN32)
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set (CMAKE_HOST_SYSTEM_NAME "Windows")
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if (DEFINED ENV{PROCESSOR_ARCHITEW6432})
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set (CMAKE_HOST_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITEW6432}")
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else()
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set (CMAKE_HOST_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITECTURE}")
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endif()
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endif()
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endif()
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# if a toolchain file is used, the user wants to cross compile.
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# in this case read the toolchain file and keep the CMAKE_HOST_SYSTEM_*
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# variables around so they can be used in CMakeLists.txt.
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# In all other cases, the host and target platform are the same.
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if(CMAKE_TOOLCHAIN_FILE)
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# at first try to load it as path relative to the directory from which cmake has been run
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include("${CMAKE_BINARY_DIR}/${CMAKE_TOOLCHAIN_FILE}" OPTIONAL RESULT_VARIABLE _INCLUDED_TOOLCHAIN_FILE)
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if(NOT _INCLUDED_TOOLCHAIN_FILE)
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# if the file isn't found there, check the default locations
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include("${CMAKE_TOOLCHAIN_FILE}" OPTIONAL RESULT_VARIABLE _INCLUDED_TOOLCHAIN_FILE)
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endif()
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if(_INCLUDED_TOOLCHAIN_FILE)
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set(CMAKE_TOOLCHAIN_FILE "${_INCLUDED_TOOLCHAIN_FILE}" CACHE FILEPATH "The CMake toolchain file" FORCE)
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else()
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message(FATAL_ERROR "Could not find toolchain file: ${CMAKE_TOOLCHAIN_FILE}")
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set(CMAKE_TOOLCHAIN_FILE "NOTFOUND" CACHE FILEPATH "The CMake toolchain file" FORCE)
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endif()
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endif()
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# if CMAKE_SYSTEM_NAME is here already set, either it comes from a toolchain file
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# or it was set via -DCMAKE_SYSTEM_NAME=...
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# if that's the case, assume we are crosscompiling
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if(CMAKE_SYSTEM_NAME)
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if(NOT DEFINED CMAKE_CROSSCOMPILING)
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set(CMAKE_CROSSCOMPILING TRUE)
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endif()
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set(PRESET_CMAKE_SYSTEM_NAME TRUE)
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elseif(CMAKE_VS_WINCE_VERSION)
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set(CMAKE_SYSTEM_NAME "WindowsCE")
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set(CMAKE_SYSTEM_VERSION "${CMAKE_VS_WINCE_VERSION}")
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set(CMAKE_SYSTEM_PROCESSOR "${MSVC_C_ARCHITECTURE_ID}")
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set(CMAKE_CROSSCOMPILING TRUE)
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set(PRESET_CMAKE_SYSTEM_NAME TRUE)
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else()
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set(CMAKE_SYSTEM_NAME "${CMAKE_HOST_SYSTEM_NAME}")
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if(NOT DEFINED CMAKE_SYSTEM_VERSION)
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set(CMAKE_SYSTEM_VERSION "${CMAKE_HOST_SYSTEM_VERSION}")
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endif()
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set(CMAKE_SYSTEM_PROCESSOR "${CMAKE_HOST_SYSTEM_PROCESSOR}")
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set(CMAKE_CROSSCOMPILING FALSE)
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set(PRESET_CMAKE_SYSTEM_NAME FALSE)
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endif()
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include(Platform/${CMAKE_SYSTEM_NAME}-Determine OPTIONAL)
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macro(ADJUST_CMAKE_SYSTEM_VARIABLES _PREFIX)
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if(NOT ${_PREFIX}_NAME)
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set(${_PREFIX}_NAME "UnknownOS")
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endif()
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# fix for BSD/OS , remove the /
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if(${_PREFIX}_NAME MATCHES BSD.OS)
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set(${_PREFIX}_NAME BSDOS)
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endif()
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# fix for GNU/kFreeBSD, remove the GNU/
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if(${_PREFIX}_NAME MATCHES kFreeBSD)
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set(${_PREFIX}_NAME kFreeBSD)
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endif()
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# fix for CYGWIN which has windows version in it
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if(${_PREFIX}_NAME MATCHES CYGWIN)
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set(${_PREFIX}_NAME CYGWIN)
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endif()
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# set CMAKE_SYSTEM to the CMAKE_SYSTEM_NAME
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set(${_PREFIX} ${${_PREFIX}_NAME})
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# if there is a CMAKE_SYSTEM_VERSION then add a -${CMAKE_SYSTEM_VERSION}
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if(${_PREFIX}_VERSION)
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set(${_PREFIX} ${${_PREFIX}}-${${_PREFIX}_VERSION})
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endif()
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endmacro()
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ADJUST_CMAKE_SYSTEM_VARIABLES(CMAKE_SYSTEM)
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ADJUST_CMAKE_SYSTEM_VARIABLES(CMAKE_HOST_SYSTEM)
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# this file is also executed from cpack, then we don't need to generate these files
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# in this case there is no CMAKE_BINARY_DIR
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if(CMAKE_BINARY_DIR)
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# write entry to the log file
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if(PRESET_CMAKE_SYSTEM_NAME)
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"The target system is: ${CMAKE_SYSTEM_NAME} - ${CMAKE_SYSTEM_VERSION} - ${CMAKE_SYSTEM_PROCESSOR}\n")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"The host system is: ${CMAKE_HOST_SYSTEM_NAME} - ${CMAKE_HOST_SYSTEM_VERSION} - ${CMAKE_HOST_SYSTEM_PROCESSOR}\n")
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else()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"The system is: ${CMAKE_SYSTEM_NAME} - ${CMAKE_SYSTEM_VERSION} - ${CMAKE_SYSTEM_PROCESSOR}\n")
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endif()
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# if a toolchain file is used, it needs to be included in the configured file,
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# so settings done there are also available if they don't go in the cache and in try_compile()
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set(INCLUDE_CMAKE_TOOLCHAIN_FILE_IF_REQUIRED)
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if(CMAKE_TOOLCHAIN_FILE)
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set(INCLUDE_CMAKE_TOOLCHAIN_FILE_IF_REQUIRED "include(\"${CMAKE_TOOLCHAIN_FILE}\")")
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endif()
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# configure variables set in this file for fast reload, the template file is defined at the top of this file
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configure_file(${CMAKE_ROOT}/Modules/CMakeSystem.cmake.in
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${CMAKE_PLATFORM_INFO_DIR}/CMakeSystem.cmake
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@ONLY)
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endif()
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