Thanks Dominic George for that. I had env var set. iconv --version gives GNU libiconv 1.16I created a clean shell so env vars set other than PATH and installed using the tarball on the link George provided.It appeared to install okay . However trying to compile throws up:cannot satisfy -package-id ghc-9.0.1
compiling with -v:
Loaded package environment from /Users/scsdjd/.ghc/x86_64-darwin-9.0.1/environments/default
Glasgow Haskell Compiler, Version 9.0.1, stage 2 booted by GHC version 8.8.4
*** initializing unit database:
There is no package.cache in /usr/local/lib/ghc-9.0.1/package.conf.d, checking if the database is empty
There are no .conf files in /usr/local/lib/ghc-9.0.1/package.conf.d, treating package database as empty
Using binary package database: /Users/scsdjd/.cabal/store/ghc-9.0.1/package.db/package.cache
package flags [-package-id ghc-9.0.1{unit ghc-9.0.1 True ([])},
regards,DavidOn Mon, Oct 11, 2021 at 3:52 PM George Colpitts <george.colpitts@gmail.com> wrote:Hi DavidI'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.xzAre any of the following env variables defined on your system?LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, and DYLD_FALLBACK_LIBRARY_PATHNone are defined on my system which I think is normal.When you typeiconv --versionWhat output do you get? I geticonv --versioniconv (GNU libiconv 1.11)Copyright (C) 2000-2006 Free Software Foundation, Inc.This is free software; see the source for copying conditions. There is NOwarranty; 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.CheersGeorge_______________________________________________On Mon, Oct 11, 2021 at 9:38 AM Dominic Steinitz <dominic@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:
- Add it explicitly on the compile command `-liconv`
- 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.
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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--David DukeEmeritus Professor of Computer ScienceSchool of Computing University of Leeds UK