python/build/soutil.py

   1 #! /usr/bin/env python
   2
   3 # Copyright (c) 2008, 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 import getopt
  18 import os
  19 import re
  20 import sys
  21
  22
  23 def parse_include_dirs():
  24     include_dirs = []
  25     options, args = getopt.gnu_getopt(sys.argv[1:], 'I:', ['include='])
  26     for key, value in options:
  27         if key in ['-I', '--include']:
  28             include_dirs.append(value)
  29         else:
  30             assert False
  31
  32     include_dirs.append('.')
  33     return include_dirs, args
  34
  35
  36 def find_file(include_dirs, name):
  37     for dir in include_dirs:
  38         file = "%s/%s" % (dir, name)
  39         try:
  40             os.stat(file)
  41             return file
  42         except OSError:
  43             pass
  44     sys.stderr.write("%s not found in: %s\n" % (name, ' '.join(include_dirs)))
  45     return None
  46
  47
  48 so_re = re.compile(r'^\.so (\S+)$')
  49
  50
  51 def extract_include_directive(line):
  52     m = so_re.match(line)
  53     if m:
  54         return m.group(1)
  55     else:
  56         return None