sys.stdout.write('Checking for %s ... ' % cc)
source = tempfile.NamedTemporaryFile(suffix='.c', delete=False)
- source.write('#if !(%s)\n#error\n#endif\n' % expr)
+ source.write(('#if !(%s)\n#error\n#endif\n' % expr).encode())
source.close()
# sys.stderr.write('%r %s %s\n' % (env['CC'], cpp_opt, source.name));