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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://github.com/llnl/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 re
import spack.compiler as cpr
from spack.compiler import *
from spack.util.executable import *
class Clang(Compiler):
# Subclasses use possible names of C compiler
cc_names = ['clang']
# Subclasses use possible names of C++ compiler
cxx_names = ['clang++']
# Subclasses use possible names of Fortran 77 compiler
f77_names = []
# Subclasses use possible names of Fortran 90 compiler
fc_names = []
# Named wrapper links within spack.build_env_path
link_paths = { 'cc' : 'clang/clang',
'cxx' : 'clang/clang++',
# Use default wrappers for fortran, in case provided in compilers.yaml
'f77' : 'f77',
'fc' : 'f90' }
@property
def cxx11_flag(self):
if ver.endswith('-apple'):
# FIXME: figure out from which version Apple's clang supports c++11
return "-std=c++11"
else:
if self.version < ver('3.3'):
tty.die("Only Clang 3.3 and above support c++11.")
else:
return "-std=c++11"
@classmethod
def default_version(self, comp):
"""The '--version' option works for clang compilers.
On most platforms, output looks like this::
clang version 3.1 (trunk 149096)
Target: x86_64-unknown-linux-gnu
Thread model: posix
On Mac OS X, it looks like this:
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin15.2.0
Thread model: posix
"""
if comp not in cpr._version_cache:
compiler = Executable(comp)
output = compiler('--version', output=str, error=str)
ver = 'unknown'
match = re.search(r'^Apple LLVM version ([^ )]+)', output)
if match:
# Apple's LLVM compiler has its own versions, so suffix them.
ver = match.group(1) + '-apple'
else:
# Normal clang compiler versions are left as-is
match = re.search(r'^clang version ([^ )]+)', output)
if match:
ver = match.group(1)
cpr._version_cache[comp] = ver
return cpr._version_cache[comp]
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