build-aux/sodepends.py

   1 #! /usr/bin/env python
   2
   3 # Copyright (c) 2008, 2011, 2017 Nicira, Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at:
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 from build import soutil
  18 import sys
  19
  20
  21 def sodepends(include_dirs, filenames, dst):
  22     ok = True
  23     print("# Generated automatically -- do not modify!    "
  24           "-*- buffer-read-only: t -*-")
  25     for toplevel in sorted(filenames):
  26         # Skip names that don't end in .in.
  27         if not toplevel.endswith('.in'):
  28             continue
  29
  30         # Open file.
  31         fn = soutil.find_file(include_dirs, toplevel)
  32         if not fn:
  33             ok = False
  34             continue
  35         try:
  36             outer = open(fn)
  37         except IOError as e:
  38             sys.stderr.write("%s: open: %s\n" % (fn, e.strerror))
  39             ok = False
  40             continue
  41
  42         dependencies = []
  43         while True:
  44             line = outer.readline()
  45             if not line:
  46                 break
  47
  48             name = soutil.extract_include_directive(line)
  49             if name:
  50                 if soutil.find_file(include_dirs, name):
  51                     dependencies.append(name)
  52                 else:
  53                     ok = False
  54
  55         dst.write("\n%s:" % toplevel[:-3])
  56         for s in [toplevel] + sorted(dependencies):
  57             dst.write(' \\\n\t%s' % s)
  58         dst.write('\n')
  59         for s in [toplevel] + sorted(dependencies):
  60             dst.write('%s:\n' % s)
  61     return ok
  62
  63
  64 if __name__ == '__main__':
  65     include_dirs, args = soutil.parse_include_dirs()
  66     error = not sodepends(include_dirs, args, sys.stdout)
  67     sys.exit(1 if error else 0)