| import ninja_syntax |
| import os |
| |
| # Simple meta-build system. |
| |
| class Make(object): |
| def __init__(self): |
| self.output = open(self.output_filename(), 'w') |
| self.rules = {} |
| self.rule_text = '' |
| self.all_targets = [] |
| self.default_targets = [] |
| self.clean_files = [] |
| self.distclean_files = [] |
| self.output.write("""all:: |
| |
| ifndef VERBOSE |
| Verb = @ |
| endif |
| |
| """) |
| |
| def output_filename(self): |
| return 'Makefile' |
| |
| def rule(self, name, command, description=None, depfile=None, |
| generator=False): |
| self.rules[name] = {'command': command, 'description': description, |
| 'depfile': depfile, 'generator': generator} |
| |
| def build(self, output, rule, inputs=[], implicit=[], order_only=[]): |
| inputs = self._as_list(inputs) |
| implicit = self._as_list(implicit) |
| order_only = self._as_list(order_only) |
| |
| output_dir = os.path.dirname(output) |
| if output_dir != '' and not os.path.isdir(output_dir): |
| os.makedirs(output_dir) |
| |
| dollar_in = ' '.join(inputs) |
| subst = lambda text: text.replace('$in', dollar_in).replace('$out', output) |
| |
| deps = ' '.join(inputs + implicit) |
| if order_only: |
| deps += ' | ' |
| deps += ' '.join(order_only) |
| self.output.write('%s: %s\n' % (output, deps)) |
| |
| r = self.rules[rule] |
| command = subst(r['command']) |
| if r['description']: |
| desc = subst(r['description']) |
| self.output.write('\t@echo %s\n\t$(Verb) %s\n' % (desc, command)) |
| else: |
| self.output.write('\t%s\n' % command) |
| if r['depfile']: |
| depfile = subst(r['depfile']) |
| self.output.write('-include '+depfile+'\n') |
| self.output.write('\n') |
| |
| self.all_targets.append(output) |
| if r['generator']: |
| self.distclean_files.append(output) |
| if r['depfile']: |
| self.distclean_files.append(depfile) |
| else: |
| self.clean_files.append(output) |
| if r['depfile']: |
| self.distclean_files.append(depfile) |
| |
| |
| def _as_list(self, input): |
| if isinstance(input, list): |
| return input |
| return [input] |
| |
| def default(self, paths): |
| self.default_targets += self._as_list(paths) |
| |
| def finish(self): |
| self.output.write('all:: %s\n\n' % ' '.join(self.default_targets or self.all_targets)) |
| self.output.write('clean: \n\trm -f %s\n\n' % ' '.join(self.clean_files)) |
| self.output.write('distclean: clean\n\trm -f %s\n' % ' '.join(self.distclean_files)) |
| |
| class Ninja(ninja_syntax.Writer): |
| def __init__(self): |
| ninja_syntax.Writer.__init__(self, open(self.output_filename(), 'w')) |
| |
| def output_filename(self): |
| return 'build.ninja' |
| |
| def finish(self): |
| pass |
| |
| def from_name(name): |
| if name == 'make': |
| return Make() |
| if name == 'ninja': |
| return Ninja() |
| raise LookupError('unknown generator: %s; supported generators are make and ninja' % name) |