Shared GHC libraries and the runtime system

[Simon Peyton-Jones]

Tyson and others

Would you like to gather some of what you have learned into a user-oriented Wiki page about how to use shared libraries in GHC?  The right place for this is
	http://haskell.org/haskellwiki/GHC
under "Contributed documentation".

You probably have all the material in the email thread, and it's a pity not to get full value from it.

Simon

| -----Original Message-----
| From: glasgow-haskell-users-bounces at haskell.org [mailto:glasgow-haskell-
| users-bounces at haskell.org] On Behalf Of Tyson Whitehead
| Sent: 23 February 2010 03:44
| To: Max Bolingbroke
| Cc: glasgow-haskell-users at haskell.org
| Subject: Re: Shared GHC libraries and the runtime system
| 
| On February 22, 2010 17:00:25 Max Bolingbroke wrote:
| > Hi Tyson,
| >
| > This blog post
| > (/) might help explain the  motivation (actually there are a few relevant
| > posts on the well-typed site).
| >
| > Essentially, I believe that this is done so that you can vary the RTS
| > by changing LD_LIBRARY_PATH. I've never used this facility so I'm
| > unable to say how useful this actually is (or if it actually works at
| > the moment).
| 
| Thanks Max.  Those were good write ups.  I'm pleased to report that I've got
| GHC hooked into Perl as a shared library (i.e., can call my GHC code from
| Perl).  I'm  working on trying to get a reasonable build system solution now.
| 
| So far I've been trying to build a single shared library, but I thinking the
| easiest/intended way might be to just get GHC to just build its own library
| and then specify it as a required shared library to the Perl stub library.
| 
| This way I wouldn't have to mix flags from the build systems in the final
| link.
| 
| (although a shared library of stubs to a shared library seems a bit strange)
| 
| Cheers!  -Tyson
| 
| PS:  Thanks to everyone responsible for getting shared libraries working.