[Buildbot-devel] ccache and buildbot (was Re: Buildbot 1.0: The Shimmering Vision)

[Bailey, Darragh]

> -----Original Message-----
> From: buildbot-devel-bounces at lists.sourceforge.net [mailto:buildbot-devel-
> bounces at lists.sourceforge.net] On Behalf Of Charles Lepple
> Sent: 20 August 2008 17:01
> To: Kai Blin
> Cc: buildbot
> Subject: Re: [Buildbot-devel] ccache and buildbot (was Re: Buildbot 1.0:
> The Shimmering Vision)
>
> On Wed, Aug 20, 2008 at 10:55 AM, Kai Blin <kai.blin at gmail.com> wrote:
> > On Wednesday 20 August 2008 02:12:23 Charles Lepple wrote:
> >> On Aug 19, 2008, at 5:53 PM, Kai Blin wrote:
> >> > Wouldn't it make more sense to simply use ccache and do a full
> >> > build every
> >> > time? The samba build farm does that and it performs reasonably well.
> >>
> >> I'm curious, how are you integrating ccache into the build?
> >
> > Not at all so far, but I didn't expect this to be complicated.

I wouldn't worry about trying to integrate ccache into buildbot, just set it up on the slaves to be available so that it's available to use for the buildbot user.

> >> The last time that I tried to set up ccache and buildbot (maybe
> >> around 0.7.6?), I had trouble getting the path changes to propagate
> >> into the buildsteps. (Using a set of symlinks in /usr/lib/ccache, as
> >> provided by Debian/Ubuntu.)
> >
> > Uh, I don't know about your setup, but on my Ubuntu box, I manually do:
> > sudo ln -s /usr/bin/ccache /usr/local/bin/gcc
> > sudo ln -s /usr/bin/ccache /usr/local/bin/g++
> > sudo ln -s /usr/bin/ccache /usr/local/bin/cc
> >
> > and never think about it again. :)
>
> That would work as well, but I usually use the /usr/lib/ccache links
> because it won't automatically interfere with any other compilation
> (in case a build slave is also a developer's box).
>
> I might give that a try, though.

Personally I prefer to have it appear transparently to any users of a system that I decide that should have ccache installed. If they don't want to use it they can set CCACHE_DISABLE in their environment to switch it off.

Add files to /etc/profile.d
ccache.sh
if [ -x "/usr/bin/ccache" -a -d "/usr/lib64/ccache/bin" ]; then
        if ! echo "$PATH" | grep -q /usr/lib64/ccache/bin; then
                PATH="/usr/lib64/ccache/bin:$PATH"
        fi
fi

Symlinks are installed as part of the rpm package, which I build and install locally, under usr/lib64/ccache/bin.

--
Regards,
Darragh Bailey

Systems Software Engineer
Hewlett Packard Galway Ltd.
+353 91 75-4674

Postal Address:    Hewlett Packard Galway Limited, Ballybrit Business Park, Galway
Registered Office: Hewlett Packard Galway Limited, 63-74 Sir John Rogerson's Quay Dublin 2
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