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251 lines
10 KiB
251 lines
10 KiB
# 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 determine 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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# 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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# MSYS MSYS_NT-6.1
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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 NAMES uname PATHS /bin /usr/bin /usr/local/bin)
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if(CMAKE_UNAME)
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "AIX")
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execute_process(COMMAND ${CMAKE_UNAME} -v
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OUTPUT_VARIABLE _CMAKE_HOST_SYSTEM_MAJOR_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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execute_process(COMMAND ${CMAKE_UNAME} -r
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OUTPUT_VARIABLE _CMAKE_HOST_SYSTEM_MINOR_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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set(CMAKE_HOST_SYSTEM_VERSION "${_CMAKE_HOST_SYSTEM_MAJOR_VERSION}.${_CMAKE_HOST_SYSTEM_MINOR_VERSION}")
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unset(_CMAKE_HOST_SYSTEM_MAJOR_VERSION)
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unset(_CMAKE_HOST_SYSTEM_MINOR_VERSION)
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elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
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execute_process(COMMAND getprop ro.build.version.sdk
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(NOT DEFINED CMAKE_SYSTEM_VERSION)
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set(_ANDROID_API_LEVEL_H $ENV{PREFIX}/include/android/api-level.h)
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set(_ANDROID_API_REGEX "#define __ANDROID_API__ ([0-9]+)")
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file(READ ${_ANDROID_API_LEVEL_H} _ANDROID_API_LEVEL_H_CONTENT)
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string(REGEX MATCH ${_ANDROID_API_REGEX} _ANDROID_API_LINE "${_ANDROID_API_LEVEL_H_CONTENT}")
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string(REGEX REPLACE ${_ANDROID_API_REGEX} "\\1" _ANDROID_API "${_ANDROID_API_LINE}")
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if(_ANDROID_API)
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set(CMAKE_SYSTEM_VERSION "${_ANDROID_API}")
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endif()
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unset(_ANDROID_API_LEVEL_H)
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unset(_ANDROID_API_LEVEL_H_CONTENT)
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unset(_ANDROID_API_REGEX)
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unset(_ANDROID_API_LINE)
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unset(_ANDROID_API)
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endif()
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else()
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execute_process(COMMAND ${CMAKE_UNAME} -r
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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endif()
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if(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|CYGWIN.*|MSYS.*|^GNU$|Android")
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execute_process(COMMAND ${CMAKE_UNAME} -m
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RESULT_VARIABLE val
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin")
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# If we are running on Apple Silicon, honor CMAKE_APPLE_SILICON_PROCESSOR.
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if(DEFINED CMAKE_APPLE_SILICON_PROCESSOR)
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set(_CMAKE_APPLE_SILICON_PROCESSOR "${CMAKE_APPLE_SILICON_PROCESSOR}")
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elseif(DEFINED ENV{CMAKE_APPLE_SILICON_PROCESSOR})
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set(_CMAKE_APPLE_SILICON_PROCESSOR "$ENV{CMAKE_APPLE_SILICON_PROCESSOR}")
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else()
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set(_CMAKE_APPLE_SILICON_PROCESSOR "")
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endif()
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if(_CMAKE_APPLE_SILICON_PROCESSOR)
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if(";${_CMAKE_APPLE_SILICON_PROCESSOR};" MATCHES "^;(arm64|x86_64);$")
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execute_process(COMMAND sysctl -q hw.optional.arm64
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OUTPUT_VARIABLE _sysctl_stdout
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ERROR_VARIABLE _sysctl_stderr
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RESULT_VARIABLE _sysctl_result
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)
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if(NOT _sysctl_result EQUAL 0 OR NOT _sysctl_stdout MATCHES "hw.optional.arm64: 1")
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set(_CMAKE_APPLE_SILICON_PROCESSOR "")
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endif()
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unset(_sysctl_result)
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unset(_sysctl_stderr)
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unset(_sysctl_stdout)
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endif()
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endif()
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if(_CMAKE_APPLE_SILICON_PROCESSOR)
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set(CMAKE_HOST_SYSTEM_PROCESSOR "${_CMAKE_APPLE_SILICON_PROCESSOR}")
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else()
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execute_process(COMMAND ${CMAKE_UNAME} -m
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RESULT_VARIABLE val
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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endif()
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unset(_CMAKE_APPLE_SILICON_PROCESSOR)
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if(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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execute_process(COMMAND arch -s
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RESULT_VARIABLE val
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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else()
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execute_process(COMMAND ${CMAKE_UNAME} -p
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RESULT_VARIABLE val
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if("${val}" GREATER 0)
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execute_process(COMMAND ${CMAKE_UNAME} -m
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OUTPUT_VARIABLE CMAKE_HOST_SYSTEM_PROCESSOR
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RESULT_VARIABLE val
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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endif()
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endif()
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# check the return of the last uname -m or -p
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if("${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 "${CMAKE_HOST_SYSTEM_PROCESSOR}")
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endif()
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else()
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if(CMAKE_HOST_WIN32)
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if (DEFINED ENV{PROCESSOR_ARCHITEW6432})
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set (CMAKE_HOST_SYSTEM_PROCESSOR "$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: ${CMAKE_TOOLCHAIN_FILE}")
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endif()
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endif()
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# if CMAKE_SYSTEM_NAME is here already set, either it comes from a toolchain file
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# or it was set via -DCMAKE_SYSTEM_NAME=...
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# if that's the case, assume we are crosscompiling
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if(CMAKE_SYSTEM_NAME)
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if(NOT DEFINED CMAKE_CROSSCOMPILING)
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set(CMAKE_CROSSCOMPILING TRUE)
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endif()
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set(PRESET_CMAKE_SYSTEM_NAME TRUE)
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elseif(CMAKE_VS_WINCE_VERSION)
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set(CMAKE_SYSTEM_NAME "WindowsCE")
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set(CMAKE_SYSTEM_VERSION "${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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if(CMAKE_CROSSCOMPILING)
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message(AUTHOR_WARNING
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"CMAKE_CROSSCOMPILING has been set by the project, toolchain file, or user. "
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"CMake is resetting it to false because CMAKE_SYSTEM_NAME was not set. "
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"To indicate cross compilation, only CMAKE_SYSTEM_NAME needs to be set."
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)
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endif()
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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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set(CMAKE_SYSTEM ${CMAKE_SYSTEM_NAME})
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if(CMAKE_SYSTEM_VERSION)
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string(APPEND CMAKE_SYSTEM -${CMAKE_SYSTEM_VERSION})
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endif()
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set(CMAKE_HOST_SYSTEM ${CMAKE_HOST_SYSTEM_NAME})
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if(CMAKE_HOST_SYSTEM_VERSION)
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string(APPEND CMAKE_HOST_SYSTEM -${CMAKE_HOST_SYSTEM_VERSION})
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endif()
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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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message(CONFIGURE_LOG
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"The target system is: ${CMAKE_SYSTEM_NAME} - ${CMAKE_SYSTEM_VERSION} - ${CMAKE_SYSTEM_PROCESSOR}\n"
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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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)
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else()
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message(CONFIGURE_LOG
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"The system is: ${CMAKE_SYSTEM_NAME} - ${CMAKE_SYSTEM_VERSION} - ${CMAKE_SYSTEM_PROCESSOR}\n"
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)
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endif()
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# if a toolchain file is used, it needs to be included in the configured file,
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# so settings done there are also available if they don't go in the cache and in try_compile()
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set(INCLUDE_CMAKE_TOOLCHAIN_FILE_IF_REQUIRED)
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if(CMAKE_TOOLCHAIN_FILE)
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set(INCLUDE_CMAKE_TOOLCHAIN_FILE_IF_REQUIRED "include(\"${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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