Lick the light switch

As it looks like there is some ccache hype lately in Planet Debian, I’ll add some of my own.

I use pbuilder to build my packages and it was a real PITA when some big package like wesnoth or kdesomething failed to build and I’d to restart the build from scratch, so (after several months of procastination) I decided to add ccache powers to my pbuilder setup. In fact, it was quite easy, although a bit “dirty”.

1. Create a directory to store the ccache cache for your pbuilder, for example,
   /var/cache/pbuilder/ccache
2. Create a directory to put the needed pbuilder hooks, for example, ~/debian/pbuilder-hooks/
3. Add an A (run just before starting the build) hook to set up ccache, for example, A01ccache:
   
#!/bin/sh
echo "Setting up ccache"
apt-get install ccache
cd /usr/lib/ccache
for c in *
do
   ln -s /usr/bin/ccache /usr/sbin/$c
done
ln -s /var/cache/pbuilder/ccache /root/.ccache

   This is the dirty bit, as I can’t set $PATH from one of the hooks, I link the ccache stuff into /usr/sbin/ which precedes /usr/bin/ in $PATH, if somebody knows any other clean way (i.e., without modifying the chroot) to do this, please tell me.
4. I’ve two more hooks, to run interactive shells when the package finishes building (or fails building), note that you need to run the shell like this:
   
/bin/bash < /dev/tty > /dev/tty

5. Run pbuilder with the correct options, I’ve a script named wonderbuild to do this:
   
#!/bin/sh
pdebuild -- --bindmounts /var/cache/pbuilder/ccache --hookdir ~/debian/pbuilder-hooks/ $*


I expect this to be useful to somebody else, it works really great for me Any improvement would be welcome.

This entry was posted on Monday, November 28th, 2005 at 8:17 am and is filed under Free Software. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.