Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




19.6 What is autom4te.cache?

     What is this directory autom4te.cache?  Can I safely remove it?

In the GNU Build System, plays a central role and is read by many tools: autoconf to create configure, autoheader to create, automake to create, autoscan to check the completeness of, autoreconf to check the GNU Build System components that are used. To “read” actually means to compile it with M4, which can be a long process for complex

This is why all these tools, instead of running directly M4, invoke autom4te (see autom4te Invocation) which, while answering to a specific demand, stores additional information in autom4te.cache for future runs. For instance, if you run autoconf, behind the scenes, autom4te also stores information for the other tools, so that when you invoke autoheader or automake etc., reprocessing is not needed. The speed up is frequently of 30%, and is increasing with the size of

But it is and remains being simply a cache: you can safely remove it.

     Can I permanently get rid of it?

The creation of this cache can be disabled from ~/.autom4te.cfg, see Customizing autom4te, for more details. You should be aware that disabling the cache slows down the Autoconf test suite by 40%. The more GNU Build System components are used, the more the cache is useful; for instance running ‘autoreconf -f’ on the Core Utilities is twice slower without the cache although --force implies that the cache is not fully exploited, and eight times slower than without --force.

  Published under the terms of the GNU General Public License Design by Interspire