1# Copyright (c) 2018, Intel Corporation 2# 3# Permission is hereby granted, free of charge, to any person obtaining a 4# copy of this software and associated documentation files (the "Software"), 5# to deal in the Software without restriction, including without limitation 6# the rights to use, copy, modify, merge, publish, distribute, sublicense, 7# and/or sell copies of the Software, and to permit persons to whom the 8# Software is furnished to do so, subject to the following conditions: 9# 10# The above copyright notice and this permission notice shall be included 11# in all copies or substantial portions of the Software. 12# 13# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 16# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 17# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 18# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 19# OTHER DEALINGS IN THE SOFTWARE. 20 21 22if(NOT DEFINED _os_release_info) 23set(_os_release_info TRUE) 24 25 26# os_release_info.cmake - Function to dump OS name and version 27 28# This file has no dependencies on other files (e.g., functions or definitions) 29# of the local cmake environment. 30 31# Set cmake policies for at least this level: 32cmake_minimum_required(VERSION 2.8.12) 33 34 35# Function get_os_release_info - Determine and return OS name and version 36# 37# Args: 38# 1. the name of a variable to receive os_name 39# 2. the name of a variable to receive os_version 40# 41# Return values: (Quotation marks are always stripped). 42# Upon failure, return values are null strings. 43# 44# Examples: 45# os_name os_version 46# -------------- ------- 47# clear-linux-os 21180 (Changes twice daily) 48# ubuntu 12.04 16.04 17.10 18.04 49# fedora 27 50# centos 6.9 7.4.1708 51# 52# Potential sources are tried (in order of preference) until a 53# suitable one is found. 54 55# Implementation documentation: 56# 57# The potential sources, in order, are as follows. 58# - /etc/centos-release 59# Centos 7 also has /etc/os-release. File /etc/os-release is less 60# precise about the Centos version (e.g., "7" instead of "7.4.1708"). 61# For that reason, this file is checked first. 62# Examples: 63# CentOS release 6.9 (Final) 64# CentOS Linux release 7.4.1708 (Core) 65# - /usr/lib/os-release 66# Present for Clear Linux, modern Fedora, and Ubuntu since some time 67# between 14.04 and 16.04. The ID and VERSION_ID values are used. 68# Examples: 69# ID=clear-linux-os VERSION_ID=21180 70# ID=fedora VERSION_ID=27 71# ID=ubuntu VERSION_ID="14.04" 72# ID=ubuntu VERSION_ID="16.04" 73# ID="ubuntu" VERSION_ID="17.10" 74# - /etc/os-release - Same form as (sometimes a link to) /usr/lib/os-release 75# ID="Ubuntu" VERSION_ID="12.04" 76# ID="Ubuntu" VERSION_ID="14.04" 77# with a symbolic link: /etc/os-release -> ../usr/lib/os-release 78# ID="CentOS Linux" VERSION_ID="7" Also: ID_LIKE="rhel fedora" 79# - /etc/lsb-release 80# For Centos, not too meaningful. 81# Other "OS"s are more reasonable: 82# DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 83# DISTRIB_ID=Ubuntu DISTRIB_RELEASE=14.04 84# DISTRIB_ID=Ubuntu DISTRIB_RELEASE=17.10 85 86 87function(get_os_release_info _vn_id _vn_version_id) 88 set(_var_id "") 89 set(_var_version_id "") 90 91 if("${_var_id}" STREQUAL "") 92 set(file_path "/etc/centos-release") 93 if(EXISTS "${file_path}") 94 # Example: CentOS release 6.9 (Final) 95 file(STRINGS "${file_path}" file_list LIMIT_COUNT 1) 96 list(GET file_list 0 file_line) 97 98 # Remove all parenthesized items. 99 string(REGEX REPLACE "\\([^)]+\\)" "" file_line "${file_line}") 100 101 # Extract start and end, discard optional "version" or "release" 102 string(REGEX MATCH "^([A-Za-z0-9_]+)( +(version|release))? +(.*)$" _dummy "${file_line}") 103 # 1 2 3 4 104 105 set(_var_id "${CMAKE_MATCH_1}") 106 set(_var_version_id "${CMAKE_MATCH_4}") 107 endif() 108 endif() 109 110 if("${_var_id}" STREQUAL "") 111 if(EXISTS "/usr/lib/os-release") 112 set(file_path "/usr/lib/os-release") 113 elseif(EXISTS "/etc/os-release") 114 set(file_path "/etc/os-release") 115 else() 116 set(file_path "") 117 endif() 118 119 if(NOT "${file_path}" STREQUAL "") 120 file(STRINGS "${file_path}" data_list REGEX "^(ID|VERSION_ID)=") 121 122 # Look for lines like "ID="..." and VERSION_ID="..." 123 foreach(_var ${data_list}) 124 if("${_var}" MATCHES "^(ID)=(.*)$") 125 set(_var_id "${CMAKE_MATCH_2}") 126 elseif("${_var}" MATCHES "^(VERSION_ID)=(.*)$") 127 set(_var_version_id "${CMAKE_MATCH_2}") 128 endif() 129 endforeach() 130 endif() 131 endif() 132 133 if("${_var_id}" STREQUAL "") 134 set(file_path "/etc/lsb-release") 135 if(EXISTS "${file_path}") 136 file(STRINGS "${file_path}" data_list REGEX "^(DISTRIB_ID|DISTRIB_RELEASE)=") 137 138 # Look for lines like "DISTRIB_ID="..." and DISTRIB_RELEASE="..." 139 foreach(_var ${data_list}) 140 if("${_var}" MATCHES "^(DISTRIB_ID)=(.*)$") 141 set(_var_id "${CMAKE_MATCH_2}") 142 elseif("${_var}" MATCHES "^(DISTRIB_RELEASE)=(.*)$") 143 set(_var_version_id "${CMAKE_MATCH_2}") 144 endif() 145 endforeach() 146 endif() 147 endif() 148 149 string(TOLOWER "${_var_id}" "_var_id") 150 151 string(STRIP "${_var_id}" _var_id) 152 string(STRIP "${_var_version_id}" _var_version_id) 153 154 # Remove any enclosing quotation marks 155 string(REGEX REPLACE "^\"(.*)\"$" "\\1" _var_id "${_var_id}") 156 string(REGEX REPLACE "^\"(.*)\"$" "\\1" _var_version_id "${_var_version_id}") 157 158 if(NOT "${_vn_id}" STREQUAL "") 159 set(${_vn_id} "${_var_id}" PARENT_SCOPE) 160 endif() 161 162 if(NOT "${_vn_version_id}" STREQUAL "") 163 set(${_vn_version_id} "${_var_version_id}" PARENT_SCOPE) 164 endif() 165 166endfunction() 167 168 169endif(NOT DEFINED _os_release_info) 170