*BSD support in 6.8.3

[Simon Marlow]

Donn Cave wrote:
> On Mon, 02 Jun 2008 09:36:41 +0100
> Simon Marlow <marlowsd at gmail.com> wrote:
> 
>> Donn Cave wrote:
> ...
>>> 20080531 and NetBSD-amd64 4.0, not so good:
>>>
>>>    GHCi, version 6.8.2.20080531: http://www.haskell.org/ghc/  :? for help
>>>    Loading package base ... linking ... done.
>>>    Bad system call (core dumped)
>>>
>>> SIGSYS appears to happen in select(), is all I could get out of gdb.  Prior
>>> to the patch, it was the usual error.
>> I guess the error in the linker was masking the SIGSYS in select(), because 
>> it occurred first.  So now we need to figure out what is causing this SIGSYS.
> 
> Well, good news and bad news.  The patch works - this was indeed
> a different problem, and with that out of the way ghci comes up
> and works well enough to pass some randomly selected tests from a
> testsuite - ghci, rts.  This is 20080531 plus patch 2013.
> 
> The SIGSYS problem is an awkward issue between GHC and NetBSD,
> which I see has already been reported, #2305.  C code compiled
> from /usr/include/signal.h links to __sigprocmask14, but
> libraries/base/System/Posix/Internals.hs links to sigprocmask
> because it misses out on the __RENAME magic in signal.h.  That's
> a compatibility function that doesn't work out so well for ghci.
> I will take this up with the NetBSD ghc package maintainer.  At
> worst, we can just hard-code the (incompatibility?) function names.

See my update to #2305 - it looks like we need a C wrapper for 
sigprocmask() in the base package.  Would you like to make a ticket for 
this, or better still a patch (it's not too hard, there are plenty of other 
examples of this in base already)?

Cheers,
	Simon