This is apparently a known bug that no-one seems to be able to
track down the cause of. It suddenly started happening to me one
night for every build, even if I changed nothing. Then, just as
suddenly, stopped happening after a couple of hours.
On Mon, Aug 19, 2019 at 05:11:19PM -0700, Dave Townsend wrote:
Thanks to a tip I've tracked this down. This seems to only be the case when
I have sccache enabled. Disabling it gives me nice quick incremental builds
again. Of course that isn't an ideal solution but it will do for now.
On Mon, Aug 19, 2019 at 1:55 PM Dave Townsend <dtowns...@mozilla.com> wrote:
For a couple of weeks now I've seen that any attempt to build Firefox,
even incremental builds seem to rebuild an awful lot of rust code. I found
this in the source which seems to suggest why:
https://searchfox.org/mozilla-central/source/config/makefiles/rust.mk#238.
But, this means that now an incremental build with a couple of code change
that have no impact on rust is taking upwards of 4 minutes to complete in
comparison to around 40 seconds, and the log file is full of cargo output.
I've heard similar comments from other developers.
This is a pretty big increase in the time to compile and test and is
really slowing down my work. Is there any way we can avoid this?
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