readline on macs
Christian.Maeder at dfki.de
Mon Jan 7 09:55:52 EST 2008
Judah Jacobson wrote:
> On Jan 5, 2008 10:29 AM, Thorkil Naur <naur at post11.tele.dk> wrote:
>> On Friday 04 January 2008 12:03, Christian Maeder wrote:
>> I understand that there are problems in this area, but I am not convinced that
>> they could not be solved without the renamed and/or modified readline
>> library. I am sorry if you have done that already elsewhere, but I don't
>> recall having seen any details about your difficulties. Would you be kind
>> enough to supply some details? Thanks a lot.
I'm against a further (renamed or modified) readline library (and I've
done nothing in that direction).
>>> The alternative is to use static linking of gmp (as suggested by chak)
>>> _and_ readline (version 5), so that user programs are also statically
>>> linked with these libs.
I just have succeeded in linking ghc-6.8.2 statically with libreadline.a
and libncurses.a in the compiler directory by setting:
SRC_HC_OPTS += -optl-Xlinker -optl-search_paths_first
This option prevents linking against the wrong dynamic library
>> Again, I am not convinced that this is the only alternative.
I don't see an advantage of a renamed or modified readline library
(it'll be even more version confusion).
> There is another alternative (which I think we talked about before):
yes in http://hackage.haskell.org/trac/ghc/ticket/1798
> Have ghc manually search for frameworks in the standard folders
> (rather than letting gcc do it automatically). Then if we found e.g.
> /Library/Frameworks/GNUreadline.framework, we would pass the following
It's not even necessary to specify a version. Enough is:
or in $HOME:
> In that case, we would not need modified readline headers.
This way I wanted to go before (saving some -F trouble for some -I
trouble), but proper mac frameworks should also have proper mac
> However, I really don't like the above, since we're reimplenting
> something gcc gives us for free. And if we *do* rely on gcc's
> standard searching (as is the case now), then I agree with Christian
> that modified headers are necessary for GNUreadline to work as a
With static linking the whole framework issue may become obsolete.
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