1164614 - Use ccache properly in desktop/android builds in TC

Status: RESOLVED INCOMPLETE

(Release Engineering :: General, defect)

Description

[Dustin J. Mitchell [:dustin] (he/him)]

These tasks currently use /builds/ccache, which does not persist from container to container, so it affords no inter-job caching.

I think this just entails adding another docker-worker:cache:* scope and mount.

Comment 1

[Dustin J. Mitchell [:dustin] (he/him)]

Attachment: MozReview Request: bz://1164614/dustin

/r/9377 - Bug 1164614: run ccache; r=mrrrgn
/r/9379 - Bug 1168592: remove extra directory from tooltool cache mount; r=mrrrgn

Pull down these commits:

hg pull -r c81a69f86c07bcc76fab4873794fff02983d5c1c https://reviewboard-hg.mozilla.org/gecko/

Comment 2

[Morgan Phillips [:mrrrgn]]

Comment on attachment 8610826 [details]
MozReview Request: bz://1164614/dustin

+1

Comment 3

[Dustin J. Mitchell [:dustin] (he/him)]

Ugh, but mozharness overrides that env var:

22:12:38    DEBUG - ENV: CCACHE_DIR is now /builds/ccache

Comment 4

[Dustin J. Mitchell [:dustin] (he/him)]

:mshal points out that it's not clear that ccache is a win anyway, and since this will be complicated to fix (requiring some backflips with special-casing in query_build_env) we should put this off until it's clear that it's useful -- likely sccache will be a better option.