| Peter Collingbourne | d5395fb | 2012-01-08 22:09:58 +0000 | [diff] [blame] | 1 | import ninja_syntax |
| 2 | import os |
| 3 | |
| 4 | # Simple meta-build system. |
| 5 | |
| 6 | class Make(object): |
| 7 | def __init__(self): |
| 8 | self.output = open(self.output_filename(), 'w') |
| 9 | self.rules = {} |
| 10 | self.rule_text = '' |
| 11 | self.all_targets = [] |
| Peter Collingbourne | bae6833 | 2012-06-01 17:29:59 +0000 | [diff] [blame^] | 12 | self.default_targets = [] |
| Peter Collingbourne | d5395fb | 2012-01-08 22:09:58 +0000 | [diff] [blame] | 13 | self.clean_files = [] |
| 14 | self.distclean_files = [] |
| 15 | self.output.write("""all:: |
| 16 | |
| 17 | ifndef VERBOSE |
| 18 | Verb = @ |
| 19 | endif |
| 20 | |
| 21 | """) |
| 22 | |
| 23 | def output_filename(self): |
| 24 | return 'Makefile' |
| 25 | |
| 26 | def rule(self, name, command, description=None, depfile=None, |
| 27 | generator=False): |
| 28 | self.rules[name] = {'command': command, 'description': description, |
| 29 | 'depfile': depfile, 'generator': generator} |
| 30 | |
| 31 | def build(self, output, rule, inputs=[], implicit=[], order_only=[]): |
| 32 | inputs = self._as_list(inputs) |
| 33 | implicit = self._as_list(implicit) |
| 34 | order_only = self._as_list(order_only) |
| 35 | |
| 36 | output_dir = os.path.dirname(output) |
| 37 | if output_dir != '' and not os.path.isdir(output_dir): |
| 38 | os.makedirs(output_dir) |
| 39 | |
| 40 | dollar_in = ' '.join(inputs) |
| 41 | subst = lambda text: text.replace('$in', dollar_in).replace('$out', output) |
| 42 | |
| 43 | deps = ' '.join(inputs + implicit) |
| 44 | if order_only: |
| 45 | deps += ' | ' |
| 46 | deps += ' '.join(order_only) |
| 47 | self.output.write('%s: %s\n' % (output, deps)) |
| 48 | |
| 49 | r = self.rules[rule] |
| 50 | command = subst(r['command']) |
| 51 | if r['description']: |
| 52 | desc = subst(r['description']) |
| 53 | self.output.write('\t@echo %s\n\t$(Verb) %s\n' % (desc, command)) |
| 54 | else: |
| 55 | self.output.write('\t%s\n' % command) |
| 56 | if r['depfile']: |
| 57 | depfile = subst(r['depfile']) |
| 58 | self.output.write('-include '+depfile+'\n') |
| 59 | self.output.write('\n') |
| 60 | |
| 61 | self.all_targets.append(output) |
| 62 | if r['generator']: |
| 63 | self.distclean_files.append(output) |
| 64 | else: |
| 65 | self.clean_files.append(output) |
| 66 | |
| 67 | def _as_list(self, input): |
| 68 | if isinstance(input, list): |
| 69 | return input |
| 70 | return [input] |
| 71 | |
| Peter Collingbourne | bae6833 | 2012-06-01 17:29:59 +0000 | [diff] [blame^] | 72 | def default(self, paths): |
| 73 | self.default_targets += self._as_list(paths) |
| 74 | |
| Peter Collingbourne | d5395fb | 2012-01-08 22:09:58 +0000 | [diff] [blame] | 75 | def finish(self): |
| Peter Collingbourne | bae6833 | 2012-06-01 17:29:59 +0000 | [diff] [blame^] | 76 | self.output.write('all:: %s\n\n' % ' '.join(self.default_targets or self.all_targets)) |
| Peter Collingbourne | d5395fb | 2012-01-08 22:09:58 +0000 | [diff] [blame] | 77 | self.output.write('clean: \n\trm -f %s\n\n' % ' '.join(self.clean_files)) |
| 78 | self.output.write('distclean: clean\n\trm -f %s\n' % ' '.join(self.distclean_files)) |
| 79 | |
| 80 | class Ninja(ninja_syntax.Writer): |
| 81 | def __init__(self): |
| 82 | ninja_syntax.Writer.__init__(self, open(self.output_filename(), 'w')) |
| 83 | |
| 84 | def output_filename(self): |
| 85 | return 'build.ninja' |
| 86 | |
| 87 | def finish(self): |
| 88 | pass |
| 89 | |
| 90 | def from_name(name): |
| 91 | if name == 'make': |
| 92 | return Make() |
| 93 | if name == 'ninja': |
| 94 | return Ninja() |
| 95 | raise LookupError, 'unknown generator: %s; supported generators are make and ninja' % name |