Merged revisions 82927 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r82927 | stefan.krah | 2010-07-17 13:46:52 +0200 (Sat, 17 Jul 2010) | 4 lines

  Issue #7384: On Gentoo, libreadline.so is a "fake library", so ldd fails.
  In that case, do not attempt to parse stderr output.
........

setup.py

@@ -547,7 +547,8 @@ class PyBuildExt(build_ext):
             tmpfile = os.path.join(self.build_temp, 'readline_termcap_lib')
             if not os.path.exists(self.build_temp):
                 os.makedirs(self.build_temp)
-            os.system("ldd %s > %s" % (do_readline, tmpfile))
+            ret = os.system("ldd %s > %s" % (do_readline, tmpfile))
+            if ret >> 8 == 0:
                 fp = open(tmpfile)
                 for ln in fp:
                     if 'curses' in ln: