[Haskell-cafe] Become a GHC build slave!
simonmarhaskell at gmail.com
Mon Feb 5 10:28:15 EST 2007
Neil Mitchell wrote:
> Hi Simon,
>> Thanks largely to Ian Lynagh, GHC now has a BuildBot infrastructure to
>> nightly builds on multiple platforms. This replaces the old set of shell
>> scripts that we used to run nightly builds; now adding new clients to
>> the setup
>> is relatively easy, instructions are here:
> Good news! Do you have any idea of how much time a build might take
It depends how much you want to do: as a rough guide, our really-do-everything
builds take about 8 hours on a fast machine, that includes
- 3 compiler stages (only 2 are necessary, the 3rd is a sanity check)
- the "extra libraries"
- all libraries built for profiling and "unregisterised"
- split objects
- a full testsuite run, in all the supported ways
- 5 runs of the nofib benchmark suite, with various flag settings
- build & upload distributions
We can do a "fast" build in much less time: probably about 1 hour for
- 2 compiler stages
- core libraries only
- no profiled libraries
- no split objects
- a "fast" testsuite run
- no benchmarks
You tell us how much time you have, we can keep your machine busy :-)
> As a second point, the Yhc team do a variety of builds - some from
> clean, some from fullclean, some from delete the directory and a
> completely fresh darcs pull etc. We've found that can help catch
> things like interface changes, dependancies etc earlier. If you have
> (or can find) too many Windows/Linux machines etc that might be worth
> doing - and is pretty easy with buildbot.
All our builds start with a fresh checkout right now. There are certainly
things that can go wrong if you don't fully clean the tree and re-configure
after updates (e.g. modifications to the configure.ac files), so I'm not sure it
would be useful to start from an partially-clean tree.
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