Glasgow-haskell-users Digest, Vol 212, Issue 5

[George Colpitts]

Hi David

I've also used ghc for years on Mac OS and have also never seen this
problem. I don't use nix. Currently I am on ghc 9.0.1. and Mac OS 11.6. I
installed from

    https://downloads.haskell.org/ghc/9.0.1/

More specifically ghc-9.0.1-x86_64-apple-darwin.tar.xz
<https://downloads.haskell.org/ghc/9.0.1/ghc-9.0.1-x86_64-apple-darwin.tar.xz>


Are any of the following env variables defined on your system?

       LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, and DYLD_FALLBACK_LIBRARY_PATH

None are defined on my system which I think is normal.

When you type

  iconv --version

What output do you get? I get

 iconv --version
iconv (GNU libiconv 1.11)
Copyright (C) 2000-2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Bruno Haible.


Not sure if my questions will help but I think there is something unusual
about your system configuration.

Cheers
George



On Mon, Oct 11, 2021 at 9:38 AM Dominic Steinitz <dominic at steinitz.org>
wrote:

> Hi David
>
> I am a long time user of ghc on OSX. I have seen that problem but never on
> native OSX only when using nix (and then I added it explicitly).
>
> Two things spring to mind:
>
>    1. Add it explicitly on the compile command `-liconv`
>    2. Use nix and then you can control the build environment in a totally
>    controllable and reproducible manner. This is actually easier than it
>    sounds: `curl https://nixos.org/nix/install | sh` and `nix-env -I
>    ghc`. If you get the same error with that then we can try adding `iconv`
>    explicitly.
>
>  Dominic Steinitz
> dominic at steinitz.org
> http://idontgetoutmuch.org
> Twitter: @idontgetoutmuch
>
>
> I have a conundrum on which advice would be appreciate. Does
> anyone know how to successfully install ghc on OSX
> I've tried various binary instalation routes:
> macports, brew, direct binary downloads from haskel.org
> All have the same result. when I try to compile a basic hello world program
> I get
>
> Undefined symbols for architecture x86_64:
>  "_iconv", referenced from:
>
>
> I've triedgiong  through ghcup
>
> 8.8.4
> 8.6.5.
> 8.10.2
> 8.10.7
> 9.0.1
>
> all have the same problem.
> I'd be happy to build from source. Small problem: what Haskell compiler do
> I use?
>
> Any advice on installs that works along with any changes to paths to avoid
> the iconv problems would be appreciated as currently my Haskell-related
> activities have come to a grinding halt. Switchig to a different OS would
> be nice but its not a
> feasible option a at present.Writing a compiler is starting to look
> attractive..
>
> thanks
> David
>
> --
> David Duke
> Emeritus Professor of Computer Science
> School of Computing University of Leeds UK
> E:duke.j.david at gmail.com
> W:https://engineering.leeds.ac.uk/staff/334/Professor_David_Duke
>
>
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>
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