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