On Wed, 19 Nov 2008, Massimo Del Fedele wrote:
I've looked into configure and configure.ac and I've seen that configure is quite more recent than configure.ac.... and it seems to have been changed manually. Am I wrong ?
Yes. configure is really not a file that anyone would want to modify manually. It may be regenerated alone from time to time to update it to newer versions of autoconf, but it's definitely not modified manually.