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##############################################################################
# Copyright (c) 2013-2017, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/llnl/spack
# Please also see the NOTICE and LICENSE files 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 Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, 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 Lesser 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 spack
import spack.spec
from spack.build_environment import dso_suffix
from spack.spec import CompilerSpec
from spack.util.executable import Executable, ProcessError
from spack.compilers.clang import Clang
from llnl.util.lang import memoized
class ABI(object):
"""This class provides methods to test ABI compatibility between specs.
The current implementation is rather rough and could be improved."""
def architecture_compatible(self, parent, child):
"""Return true if parent and child have ABI compatible targets."""
return not parent.architecture or not child.architecture or \
parent.architecture == child.architecture
@memoized
def _gcc_get_libstdcxx_version(self, version):
"""Returns gcc ABI compatibility info by getting the library version of
a compiler's libstdc++ or libgcc_s"""
spec = CompilerSpec("gcc", version)
compilers = spack.compilers.compilers_for_spec(spec)
if not compilers:
return None
compiler = compilers[0]
rungcc = None
libname = None
output = None
if compiler.cxx:
rungcc = Executable(compiler.cxx)
libname = "libstdc++." + dso_suffix
elif compiler.cc:
rungcc = Executable(compiler.cc)
libname = "libgcc_s." + dso_suffix
else:
return None
try:
# Some gcc's are actually clang and don't respond properly to
# --print-file-name (they just print the filename, not the
# full path). Ignore these and expect them to be handled as clang.
if Clang.default_version(rungcc.exe[0]) != 'unknown':
return None
output = rungcc("--print-file-name=%s" % libname, output=str)
except ProcessError:
return None
if not output:
return None
libpath = os.readlink(output.strip())
if not libpath:
return None
return os.path.basename(libpath)
@memoized
def _gcc_compiler_compare(self, pversion, cversion):
"""Returns true iff the gcc version pversion and cversion
are ABI compatible."""
plib = self._gcc_get_libstdcxx_version(pversion)
clib = self._gcc_get_libstdcxx_version(cversion)
if not plib or not clib:
return False
return plib == clib
def _intel_compiler_compare(self, pversion, cversion):
"""Returns true iff the intel version pversion and cversion
are ABI compatible"""
# Test major and minor versions. Ignore build version.
if (len(pversion.version) < 2 or len(cversion.version) < 2):
return False
return pversion.version[:2] == cversion.version[:2]
def compiler_compatible(self, parent, child, **kwargs):
"""Return true if compilers for parent and child are ABI compatible."""
if not parent.compiler or not child.compiler:
return True
if parent.compiler.name != child.compiler.name:
# Different compiler families are assumed ABI incompatible
return False
if kwargs.get('loose', False):
return True
# TODO: Can we move the specialized ABI matching stuff
# TODO: into compiler classes?
for pversion in parent.compiler.versions:
for cversion in child.compiler.versions:
# For a few compilers use specialized comparisons.
# Otherwise match on version match.
if pversion.satisfies(cversion):
return True
elif (parent.compiler.name == "gcc" and
self._gcc_compiler_compare(pversion, cversion)):
return True
elif (parent.compiler.name == "intel" and
self._intel_compiler_compare(pversion, cversion)):
return True
return False
def compatible(self, parent, child, **kwargs):
"""Returns true iff a parent and child spec are ABI compatible"""
loosematch = kwargs.get('loose', False)
return self.architecture_compatible(parent, child) and \
self.compiler_compatible(parent, child, loose=loosematch)
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