threed-beam-fea/ext/eigen-3.3.4/cmake/EigenDetermineOSVersion.cmake

47 lines
1.5 KiB
CMake

# The utility function DetermineOSVersion aims at providing an
# improved version of the CMake variable ${CMAKE_SYSTEM} on Windows
# machines.
#
# Usage:
# include(EigenDetermineOSVersion)
# DetermineOSVersion(OS_VERSION)
# message("OS: ${OS_VERSION}")
# - A little helper variable which should not be directly called
function(DetermineShortWindowsName WIN_VERSION win_num_version)
if (${win_num_version} VERSION_EQUAL "6.1")
set(_version "win7")
elseif(${win_num_version} VERSION_EQUAL "6.0")
set(_version "winVista")
elseif(${win_num_version} VERSION_EQUAL "5.2")
set(_version "winXpProf")
elseif(${win_num_version} VERSION_EQUAL "5.1")
set(_version "winXp")
elseif(${win_num_version} VERSION_EQUAL "5.0")
set(_version "win2000Prof")
else()
set(_version "unknownWin")
endif()
set(${WIN_VERSION} ${_version} PARENT_SCOPE)
endfunction()
function(DetermineOSVersion OS_VERSION)
if (WIN32 AND CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
file (TO_NATIVE_PATH "$ENV{COMSPEC}" SHELL)
exec_program( ${SHELL} ARGS "/c" "ver" OUTPUT_VARIABLE ver_output)
string(REGEX MATCHALL "[0-9]+"
ver_list "${ver_output}")
list(GET ver_list 0 _major)
list(GET ver_list 1 _minor)
set(win_num_version ${_major}.${_minor})
DetermineShortWindowsName(win_version "${win_num_version}")
if(win_version)
set(${OS_VERSION} ${win_version} PARENT_SCOPE)
endif()
else()
set(${OS_VERSION} ${CMAKE_SYSTEM} PARENT_SCOPE)
endif()
endfunction()