Re: ghc-7.0.2 on macports wanted

On 11/03/11 11:01, Christian Maeder wrote:

Am 11.03.2011 11:32, schrieb Max Bolingbroke:

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On 10 March 2011 17:51, Christian Maeder wrote:

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Why does the base package depend on iconv only on macs? iconv is not needed under linux or solaris (unless you install haskeline, which is not in the platform.

I don't have access to a Linux box to check, but according to the source code iconv should be required on any platform except Win32.

Maybe it is statically linked into the base package

No, iconv is part of libc on Linux.

And maybe this could be done on Macs with a locally installed static iconv lib?

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Could we do something here to make GHC compatible with either iconv? For example, on OS X we could weakly link base against both iconv_* and libiconv_* and then have the hs_iconv_* functions dispatch to the first non-null function of the two.

No idea.

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Alternatively, perhaps it would be sufficient to have bases' "extra-lib-dirs" include /usr/lib/? I guess this would only work if GHC arranges to put -L/usr/lib at the very front of the link line, though.

It did not help to just add "/usr/lib" to library-dirs or "-L/usr/lib" to ld-options of base's package.conf file.

Maybe it would help to add /usr/lib to those packages that add /opt/local/lib?

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Some sort of solution here would eliminate a lot of pain and suffering on the part of OS X GHC users :-)

I agree, C.

We'd be happy to apply any suitable workaround. Cheers, Simon