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
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@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@gmail.com W:https://engineering.leeds.ac.uk/staff/334/Professor_David_Duke
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