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# Copyright 2017 The Cobalt Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Allows to use Clang as a compiler and assembler."""
from starboard.tools.toolchain import abstract
from starboard.tools.toolchain import common
class CompilerBase(object):
"""A base class for Clang-based compilers and assemblers."""
def __init__(self, **kwargs):
self._path = common.GetPath('clang', **kwargs)
self._extra_flags = kwargs.get('extra_flags', [])
self._defines = kwargs.get('defines', [])
def GetPath(self):
return self._path
def GetExtraFlags(self):
return self._extra_flags
def GetMaxConcurrentProcesses(self):
# Run as much concurrent processes as possible.
return None
def GetHeaderDependenciesFilePath(self):
return '$out.d'
def GetHeaderDependenciesFormat(self):
return 'gcc'
def GetRspFilePath(self):
# A command line only contains one input and one output file.
pass
def GetRspFileContent(self):
# A command line only contains one input and one output file.
pass
def _GetClangCommand(path, language, extra_flags, flags, shell):
del shell # Not used.
return ('{path} -x {language} -MMD -MF $out.d {extra_flags} {flags} -c $in '
'-o $out'.format(path=path, language=language,
extra_flags=extra_flags, flags=flags))
class CCompiler(CompilerBase, abstract.CCompiler):
"""Compiles C sources using Clang."""
def __init__(self, **kwargs):
# pylint:disable=useless-super-delegation
super(CCompiler, self).__init__(**kwargs)
def GetCommand(self, path, extra_flags, flags, shell):
return _GetClangCommand(path, 'c', extra_flags, flags, shell)
def GetDescription(self):
return 'CC $out'
def GetFlags(self, defines, include_dirs, cflags):
define_flags = ['-D{0}'.format(define) for define in defines]
include_dir_flags = [
'-I{0}'.format(include_dir) for include_dir in include_dirs
]
return define_flags + include_dir_flags + cflags
class CxxCompiler(CompilerBase, abstract.CxxCompiler):
"""Compiles C++ sources using Clang."""
def __init__(self, **kwargs):
# pylint:disable=useless-super-delegation
super(CxxCompiler, self).__init__(**kwargs)
def GetCommand(self, path, extra_flags, flags, shell):
return _GetClangCommand(path, 'c++', extra_flags, flags, shell)
def GetDescription(self):
return 'CXX $out'
def GetFlags(self, defines, include_dirs, cflags):
define_flags = [
'-D{0}'.format(define) for define in self._defines + defines
]
include_dir_flags = [
'-I{0}'.format(include_dir) for include_dir in include_dirs
]
return define_flags + include_dir_flags + cflags
class ObjectiveCxxCompiler(CompilerBase, abstract.ObjectiveCxxCompiler):
"""Compiles Objective-C++ sources using Clang."""
def __init__(self, **kwargs):
# pylint:disable=useless-super-delegation
super(ObjectiveCxxCompiler, self).__init__(**kwargs)
def GetCommand(self, path, extra_flags, flags, shell):
return _GetClangCommand(path, 'objective-c++', extra_flags, flags, shell)
def GetDescription(self):
return 'OBJCXX $out'
def GetFlags(self, defines, include_dirs, cflags):
define_flags = [
'-D{0}'.format(define) for define in self._defines + defines
]
include_dir_flags = [
'-I{0}'.format(include_dir) for include_dir in include_dirs
]
return define_flags + include_dir_flags + cflags
class AssemblerWithCPreprocessor(CompilerBase,
abstract.AssemblerWithCPreprocessor):
"""Compiles assembler sources that contain C preprocessor directives."""
def __init__(self, **kwargs):
# pylint:disable=useless-super-delegation
super(AssemblerWithCPreprocessor, self).__init__(**kwargs)
def GetCommand(self, path, extra_flags, flags, shell):
return _GetClangCommand(path, 'assembler-with-cpp', extra_flags, flags,
shell)
def GetDescription(self):
return 'ASM $out'
def GetFlags(self, defines, include_dirs, cflags):
define_flags = [
'-D{0}'.format(define) for define in self._defines + defines
]
include_dir_flags = [
'-I{0}'.format(include_dir) for include_dir in include_dirs
]
return define_flags + include_dir_flags + cflags