# Config.guess, config.sub in version control

**URL:** <https://www.ruby-forum.com/t/config-guess-config-sub-in-version-control/97711>\
**Category:** GNU Radio\
**Created:** [July 9, 2006, 9:48pm UTC](https://www.ruby-forum.com/t/config-guess-config-sub-in-version-control/97711 "2006-07-09T21:48:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jconley](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/90ced4/32.png) [@jconley](https://www.ruby-forum.com/u/jconley)\
**Post date:** [July 9, 2006, 9:48pm UTC](https://www.ruby-forum.com/t/config-guess-config-sub-in-version-control/97711/1 "2006-07-09T21:48:41Z")

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Eric–

Why are config.guess and config.sub under version control? Aren’t these  
normally symbolic links to the installed autotools on the local system?

-Johnathan

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**Author:** ![jconley](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/90ced4/32.png) [@jconley](https://www.ruby-forum.com/u/jconley)\
**Post date:** [July 9, 2006, 10:00pm UTC](https://www.ruby-forum.com/t/config-guess-config-sub-in-version-control/97711/2 "2006-07-09T22:00:53Z")

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On Sun, Jul 09, 2006 at 12:48:42PM -0700, Johnathan C. wrote:

> Eric–
> 
> Why are config.guess and config.sub under version control? Aren’t these  
> normally symbolic links to the installed autotools on the local system?
> 
> -Johnathan

Nope. Just prior to building tarballs I fetch the newest versions  
available from their canonical home and copy them to our tree.

This way we’re within 3 months of the latest versions available.  
autoconf and automake don’t get updated that often, and even if they  
did, they’d be fetching them from the same upstream place I do.

Eric