1610494 - Enable PGO builds for Thunderbird

Status: NEW

(Thunderbird :: Build Config, enhancement)

Description

[Rob Lemley [:rjl]]

Attachment: PGO-WIP.patch

While discussing the difference between a "shippable" build and a regular build as seen in Taskcluster, I mentioned that Firefox's shippable builds use PGO, but Thunderbird's do not. The exact history of why that is I do not know, but it's something to get working since it should be an improvement.

A quick initial attempt to bring the configs in from Firefox failed on try. Posting that patch for future reference.

Problems:

• macOS is disabled, I need to talk to Releng about hardware.
• Windows failed because I forgot to add in the Thunderbird version of the tooltool manifest that has the MS MAPI headers
• Need to look at the profile-generate job and adjust some paths from "firefox" to "thunderbird"

Comment 1

[Martin Weinelt]

When trying to build Thunderbird 102 with PGO enabled it starts up Thunderbird and then loops endlessly with the following message:

console.warn: feeds: "downloadFeed: network connection unavailable"

Ideally there would not be any network access required during profiling.