Error Reported During petsc Configuration

Symptom

An error is reported when you run the ./configure command. The error information is similar to the following:

. This script, last modified 2008-01-23, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from
http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD

Key Process and Cause Analysis

The config.guess and config.sub certificate files have expired.

Conclusion and Solution

1. Run the following commands to search for the config.guess and config.sub files:

   find ./ -name config.guess

   find ./ -name config.sub

2. Update the content in the files to the content in the web page.

   config.guess:

   http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD

   config.sub:

   http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD