bootstrap is slow and issues many warnings

[R. Diez]

> $ ~/development/rtems/4.11/bin/automake --version

> automake (GNU automake) 1.12.6
> 
> What happens if you try this version ?

I am not getting any warnings with automake versions 1.12.6 or 1.13.4.

The process remains rather slow in any case. Is there any way to speed it up?

Thanks,
  rdiez