[m-rev.] For review: Shared Mercury libs on Mac OS X

[Julien Fischer]

On Tue, 12 Oct 2004, Ian MACLARTY wrote:

> On Tue, Oct 12, 2004 at 01:57:14AM +1000, Julien Fischer wrote:
> >
> > On Tue, 12 Oct 2004, Ian MacLarty wrote:
> >
> > > On 10 Oct 2004, at 05:08, Julien Fischer wrote:
> > >
> > > > > 	1. The -undefined_suppress linker option doesn't work with two level
> > > > > 		namespaces which is the default on Darwin.  Is the
> > > > > 		--allow-undefined ml option used?  If so should shared libs
> > > > > 		rather use flat namespaces.  Alternatively the ALLOW_UNDEFINED
> > > > > 		configuration variable can be set to "-undefined
> > > > > 		dynamic_lookup", but that'll only work for Mac OS >= 10.3.  I
> > > > > 		didn't get any undefined symbols when compiling the compiler.
> > > > >
> > > > At the moment we should probably just support versions >= 10.3.
> > > >
> > > I guess, but everything seems to work okay without having to use "-undefined
> > > dynamic_lookup", so I don't see the need to resort to this 10.3 specific
> > > feature.  Currently everything should in theory still work on 10.2 and 10.1.
> > >
> > It's probably worth mentioning in README.MacOS that this has not been
> > tested on 10.2 and 10.1.
> >
>
> Index: README.MacOS
> ===================================================================
> RCS file: /home/mercury1/repository/mercury/README.MacOS,v
> retrieving revision 1.6
> diff -u -r1.6 README.MacOS
> --- README.MacOS	4 Oct 2004 06:45:13 -0000	1.6
> +++ README.MacOS	12 Oct 2004 01:39:02 -0000
> @@ -25,6 +25,8 @@
>  The fast.gc and asm_fast.gc grades are not supported on PowerPC.
>
>  The following features are not yet supported on MacOS:
> -	- shared libraries
>  	- interactive queries in mdb
>  	- the `--split-c-files' option to mmc
> +
> +Linking to shared versions of the Mercury libraries works on Mac OS 10.3, but
> +hasn't been tested on previous versions of Mac OS X (although they should).
>
s/although they should/although it should work/

> > > > > Mmake.common.in
> > > > > 	Added variables used for install-name on/off switch and flag name.
> > > > >
> > > > Do you need to make any changes to Mmake.workspace?
> > > >
> > > I don't know.  tools/lmc seems to work, although it only seems to
> > > statically link in the mercury libraries.  --mercury-linkage may not be an
> > > option lmc recognises.
> > >
> > I think it's meant to do that.
> >
> Well then I don't think any changes need to be make to Mmake.workspace - do
> you agree?
>
Yes.

Julien.
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