+def swig_version():
+ # It may come on either stdout or stderr, depending on the
+ # version, so read both.
+ i, o, e = os.popen3(SWIG + ' -version', 't')
+ stext = o.read() + e.read()
+ import re
+ match = re.search(r'[0-9]+\.[0-9]+\.[0-9]+$', stext, re.MULTILINE)
+ if not match:
+ raise 'NotFound'
+ SVER = match.group(0)
+ return SVER
+