7.8 Release Update

Austin Seipp aseipp at pobox.com
Mon Sep 9 02:25:50 UTC 2013


Dynamic should be available with anything, including profiling. This
is probably more an artifact of your mk/build.mk setup.

When you look in there, check carefully which BuildFlavour you have
set. The relevant variable is GhcLibWays. For example,
BuildFlavour=perf will add 'p' which is profiling, and also 'dyn' if
the platform supports shared libraries. BuildFlavour=quick however,
would not set this.

If you have a build tree, you can do:

$ make show VALUE=GhcLibWays

which should print out a string containing the enabled Ways.

On Sun, Sep 8, 2013 at 9:16 PM, Kazu Yamamoto <kazu at iij.ad.jp> wrote:
> Hi Austin,
> I would like to ask about profiling and dynamic linking.
> If I understand correctly, GHC 7.8 with cabal-install 1.18.x.x uses
> dynamic linking by default (except on FreeBSD). But GHC 7.8 provides a
> profile library only for static linking. An example is the base
> library:
>         libHSbase-
>         libHSbase-*
>         libHSbase-
> Profile libraries for dynamic linking are not provided. So, I got
> troubles when I tried to take profile of my programs. I need to
> specify "--disable-shared" explicitly to cabal-install. (This sometime
> fails if Build-Type: is Custom.)
> Is this intentional? Are there any technical reasons to not provide
> dynamic profile libraries?
> --Kazu
>> Friends,
>> After talking with SPJ, we've decided that the cutoff date for the 7.8
>> feature window will essentially start on Monday, the 16th. This is the
>> beginning of the week before ICFP. This is a week from tomorrow.
>> Afterwords, I suspect we will cut the 7.8 branch in early October (my
>> notes tentatively say Oct. 9th.) This will give us a few weeks of
>> straight bugfixing.
>> Don't let this scare you too much. We're doing this at the beginning
>> of the week so we have time to sort things out. Bug fixes will of
>> course continuously be welcome until the 7.8 branch.
>> However, for pending features, I'd like a status update. Everyone
>> mentioned below, please reply to clarify anything:
>>  * Iavor Diatchki and SPJ are working together on the type-nats-simple
>> branch. I believe this will hopefully land in time. Iavor, SPJ - can
>> you comment here?
>>  * Trevor and Iavor are also working on kinds without data. Any word here?
>>  * Geoffrey is currently moving, but he says the SIMD work and new
>> template-haskell work will land by the end of this week, which is
>> great.
>>  * Patrick Palka has a few loose ends to tie off for the parallel
>> compilation driver. I talked to him today, and after Andreas committed
>> his bugfix to base, I believe everything is now working, with the
>> deadlocks sorted out. Patrick, can you confirm? We can get this merged
>> ASAP if so.
>>  * Pedro and Richard - what's the story on propositional equality,
>> etc? This is mentioned on the status page[1] but I'm not sure what
>> else needs to be done. I know Pedro committed the work to make manual
>> Typeable instances an error, which is great.
>>  * Luite and Edsko will be talking about some final changes to the
>> hooks patch, and afterwords it can hopefully be integrated. I'll keep
>> up with them this week.
>>  * I am currently working on integrating the Applicative-Monad
>> warning, but this requires some upstream patches for the build to
>> work. However, we still need to sync several upstream libraries, and
>> this will be happening over the next few weeks. Therefore, I may
>> commit it, and incrementally fix validation errors as time goes on and
>> me and Herbert sync upstreams.
>> IMO, most of these look to be in good shape, I think.
>> If you *do not think you'll make it by the 16th*, please let me know.
>> We can possibly still land it the week of the 16th, provided I know
>> ASAP. But we really really need to know, because many people will be
>> gone the following week.
>> In the following few days, I'm hoping going to finish off everything I
>> can in the patch queue, and fix my remaining bugs, and investigate
>> Dynamic GHCi in particular.
>> Again, if you don't think you can make it on the 16th, but still
>> within the week, we can of discuss it.
>> --
>> Regards,
>> Austin - PGP: 4096R/0x91384671
>> _______________________________________________
>> ghc-devs mailing list
>> ghc-devs at haskell.org
>> http://www.haskell.org/mailman/listinfo/ghc-devs

Austin - PGP: 4096R/0x91384671

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