On 4/10/2013 1:33 AM, Herbert Dürr wrote:
On 2013/04/10 10:09 AM, Andre Fischer wrote:
tonight we had a build breaker in the windows build: a slot id that is
used in SW had been removed in SVX. The reference in SW had also been
removed, so this change should not be a problem.
But the windows build is still not a full build. Therefore the old SW
slot header files where used and the build broke.
There is an easy fix for situations like this: a clean build.
Incremental build are known to have problems thats why I suggested [1]
to default to a clean build. That didn't receive consensus though and
indeed there are good reasons against it:
The incremental build both tests the dependency system and it reduces
the load when building significantly.
On the already strained buildbot this means a factor of almost five
improvement as clean build takes about 4.5h whereas an incremental
build takes only 0.5-1.0h.
Andrew even had to reschedule the snapshot build away from the weekly
clean build because the buildbot load is a real problem.
[1] http://markmail.org/message/wmlhc5f5zaiiyu2o
[2] http://markmail.org/message/7q64ijlwygdqmwf3
Just to add here, that there are also issues with a clean build. The
clean build fails with some frequency on hung jobs and requires manual
attention.
In reality, breaking changes that require a clean build are pretty
rare. For me, the clean build on the weekend and incremental during the
week seems to be a good compromise.
This may become important in the coming weeks when we have to fix some
bugs in the sidebar (which is about to be merged back into trunk). The
sidebar is implemented in several modules. Without a clean windows
build we will run into build breakers very regularly.
It is possible to force a clean build manually.
I'm cleaning it up now and kicking off a build.
Andrew
Herbert
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