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#!/usr/bin/env python
#
# USAGE: gen-build.py TYPE
#
# where TYPE is one of: make, dsp, vcproj
#
# It reads build.conf from the current directory, and produces its output
# into the current directory.
#
import os
import ConfigParser
import getopt
import string
import glob
import re
#import ezt
def main():
parser = ConfigParser.ConfigParser()
parser.read('build.conf')
dirs = { }
files = get_files(parser.get('options', 'paths'))
headers = get_files(parser.get('options', 'headers'))
# compute the relevant headers, along with the implied includes
legal_deps = map(os.path.basename, headers)
h_deps = { }
for fname in headers:
h_deps[os.path.basename(fname)] = extract_deps(fname, legal_deps)
resolve_deps(h_deps)
f = open('build-outputs.mk', 'w')
f.write('# DO NOT EDIT. AUTOMATICALLY GENERATED.\n\n')
objects = [ ]
for file in files:
assert file[-2:] == '.c'
obj = file[:-2] + '.lo'
objects.append(obj)
dirs[os.path.dirname(file)] = None
# what headers does this file include, along with the implied headers
deps = extract_deps(file, legal_deps)
for hdr in deps.keys():
deps.update(h_deps.get(hdr, {}))
f.write('%s: %s %s\n' % (obj, file, string.join(deps.keys(), ' ')))
f.write('\nOBJECTS = %s\n\n' % string.join(objects))
f.write('HEADERS = %s\n\n' % string.join(headers))
f.write('SOURCE_DIRS = %s\n\n' % string.join(dirs.keys()))
def extract_deps(fname, legal_deps):
"Extract the headers this file includes."
deps = { }
for line in open(fname).readlines():
if line[:8] != '#include':
continue
inc = _re_include.match(line).group(1)
if inc in legal_deps:
deps[inc] = None
return deps
_re_include = re.compile('#include *["<](.*)[">]')
def resolve_deps(header_deps):
"Alter the provided dictionary to flatten includes-of-includes."
altered = 1
while altered:
altered = 0
for hdr, deps in header_deps.items():
print hdr, deps
start = len(deps)
for dep in deps.keys():
deps.update(header_deps.get(dep, {}))
if len(deps) != start:
altered = 1
def get_files(patterns):
patterns = string.replace(patterns, '{platform}', get_platform())
patterns = string.split(string.strip(patterns))
files = [ ]
for pat in patterns:
files.extend(glob.glob(pat))
return files
def get_platform():
return 'unix'
if __name__ == '__main__':
main()
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