Commit f5b598c9 authored by spiiroin's avatar spiiroin

Added python script to help automated header dependency scanning

Takes input from gcc -MM and outputs object : source + headers
dependencies that can be included from the Makefile.

The processing done for gcc -MM output include:
- sorting of dependencies to keep future diffs cleaner
- fixing the destination path if source is not in the CWD
- generating dependency for -fPIC compilation too
parent e358d0d8
#!/usr/bin/env python
# -*- encoding: utf8 -*-
# ----------------------------------------------------------------------------
# Copyright (C) 2012 Jolla Ltd.
# Contact: Simo Piiroinen <>
# License: GPLv2
# ----------------------------------------------------------------------------
import sys,os
def is_local(path):
return not path.startswith("/")
def print_rule(dest, srce):
print "%s\\\n" % "\\\n\t".join(["%s:" % dest] + srce)
def set_extension(path, ext):
return os.path.splitext(path)[0] + ext
def normalize_path(srce):
return os.path.normpath(srce)
def fix_directory(dest, srce):
srce = os.path.dirname(srce)
dest = os.path.basename(dest)
return os.path.join(srce, dest)
if __name__ == "__main__":
data = sys.stdin.readlines()
data = map(lambda x:x.rstrip(), data)
deps = []
# Note: dependencies are sorted only to keep
# future diffs cleaner
while data:
line = data.pop()
while line.endswith('\\'):
line = line[:-1] + data.pop()
if not ':' in line:
dest,srce = line.split(":",1)
srce = srce.split()
srce,temp = srce[0],srce[1:]
# take dest path primary srce
dest = fix_directory(dest, srce)
# remove secondary deps with absolute path
temp = filter(is_local, temp)
# sort secondary sources
srce = [srce] + temp
srce = map(normalize_path, srce)
for dest,srce in sorted(deps):
# emit normal compilation dependencies
print_rule(dest, srce)
# and for -fPIC in case it is needed
dest = set_extension(dest, ".pic.o")
print_rule(dest, srce)
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