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##############################################################################
# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://scalability-llnl.github.io/spack
# Please also see the LICENSE file for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License (as published by
# the Free Software Foundation) version 2.1 dated February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
import os
import platform as py_platform
import subprocess
from llnl.util.lang import memoized
import spack
import spack.error as serr
from spack.version import Version
class InvalidSysTypeError(serr.SpackError):
def __init__(self, sys_type):
super(InvalidSysTypeError, self).__init__(
"Invalid sys_type value for Spack: " + sys_type)
class NoSysTypeError(serr.SpackError):
def __init__(self):
super(NoSysTypeError, self).__init__(
"Could not determine sys_type for this machine.")
def get_sys_type_from_spack_globals():
"""Return the SYS_TYPE from spack globals, or None if it isn't set."""
if not hasattr(spack, "sys_type"):
return None
elif hasattr(spack.sys_type, "__call__"):
return spack.sys_type()
else:
return spack.sys_type
def get_sys_type_from_environment():
"""Return $SYS_TYPE or None if it's not defined."""
return os.environ.get('SYS_TYPE')
def get_mac_sys_type():
"""Return a Mac OS SYS_TYPE or None if this isn't a mac."""
mac_ver = py_platform.mac_ver()[0]
if not mac_ver:
return None
return "macosx_%s_%s" % (
Version(mac_ver).up_to(2), py_platform.machine())
def get_sys_type_from_uname():
"""Return the architecture from uname."""
try:
arch_proc = subprocess.Popen(['uname', '-i'],
stdout=subprocess.PIPE)
arch, _ = arch_proc.communicate()
return arch.strip()
except:
return None
@memoized
def sys_type():
"""Returns a SysType for the current machine."""
methods = [get_sys_type_from_spack_globals,
get_sys_type_from_environment,
get_mac_sys_type,
get_sys_type_from_uname]
# search for a method that doesn't return None
sys_type = None
for method in methods:
sys_type = method()
if sys_type: break
# Couldn't determine the sys_type for this machine.
if sys_type is None:
return "unknown_arch"
if not isinstance(sys_type, basestring):
raise InvalidSysTypeError(sys_type)
return sys_type
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