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# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import default_flavor
"""GN flavor utils, used for building Skia with GN."""
class GNFlavorUtils(default_flavor.DefaultFlavorUtils):
def supported(self):
extra_config = self.m.vars.builder_cfg.get('extra_config', '')
return any([
extra_config == 'GN',
extra_config == 'Fast',
extra_config.startswith('SK')
])
def compile(self, unused_target, **kwargs):
"""Build Skia with GN."""
compiler = self.m.vars.builder_cfg.get('compiler', '')
configuration = self.m.vars.builder_cfg.get('configuration', '')
extra_config = self.m.vars.builder_cfg.get('extra_config', '')
cc, cxx = 'cc', 'c++'
extra_cflags = []
if compiler == 'Clang':
cc, cxx = 'clang', 'clang++'
elif compiler == 'GCC':
cc, cxx = 'gcc', 'g++'
compiler_prefix = ""
ccache = self.m.run.ccache()
if ccache:
compiler_prefix = ccache
if compiler == 'Clang':
# Stifle "argument unused during compilation: ..." warnings.
extra_cflags.append('-Qunused-arguments')
if extra_config == 'Fast':
extra_cflags.extend(['-march=native', '-fomit-frame-pointer', '-O3'])
if extra_config.startswith('SK'):
extra_cflags.append('-D' + extra_config)
quote = lambda x: '"%s"' % x
gn_args = ' '.join('%s=%s' % (k,v) for (k,v) in {
'cc': quote(cc),
'cxx': quote(cxx),
'compiler_prefix': quote(compiler_prefix),
'extra_cflags': quote(' '.join(extra_cflags)),
'is_debug': 'true' if configuration == 'Debug' else 'false',
}.iteritems())
run = lambda title, cmd: self.m.run(self.m.step, title, cmd=cmd,
cwd=self.m.vars.skia_dir, **kwargs)
run('fetch-gn', [self.m.vars.skia_dir.join('bin', 'fetch-gn')])
run('gn gen', ['gn', 'gen', self.out_dir, '--args=' + gn_args])
run('ninja', ['ninja', '-C', self.out_dir])
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