[Buildroot] autoconf caching
Waldemar Brodkorb
wbx at openadk.org
Fri Jun 6 05:20:17 UTC 2014
Hi,
Dallas Clement wrote,
> Hi All - I have seen posts on this subject before. It looks like things flamed
> out.
>
> http://lists.gnu.org/archive/html/autoconf/2012-11/msg00022.html
>
> I'm getting killed by autoconf. My builds take 1.5 hours even with ccache
> turned on. Most of the cores in my very impressive build machine are sitting
> on their !#@ while autoconf is running. Most of my packages rely on autotools
> and it seems that most of the time spent is running configure scripts.
>
> Can anyone offer some advice on how to speed things up with autoconf? Or is it
> a lost cause?
>
> Many thanks,
There was an interesting discussion about performance on the autoconf
mailinglist:
http://lists.gnu.org/archive/html/autoconf/2014-03/msg00030.html
OpenWrt uses CONFIG_SITE with some global architecture and libc
dependent files, see here:
https://dev.openwrt.org/browser/trunk/include/site
OpenEmbedded uses CONFIG_SITE, too:
http://cgit.openembedded.org/openembedded-core/tree/meta/site
They have a lot of package specific values added to their files.
May be the OpenWrt way with just a few global cached values would be
a benefit for buildroot performance?
best regards
Waldemar
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