Never met this issue myself (with currently osx 10.14.6 Mojave, and a few previous versions), I guess macports/homebrew or some other pieces aren't playing nicely with some others in your machine.

Checkout https://newbedev.com/libiconv-or-iconv-undefined-symbol-on-mac-osx maybe helpful.

On 2021-10-11, at 17:00, David Duke <duke.j.david@gmail.com> wrote:

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:
      _hs_iconv in libHSbase-4.14.3.0.a(iconv.o)
     (maybe you meant: _base_GHCziIOziEncodingziIconv_iconvEncoding1_closure, _base_GHCziIOziEncodingziIconv_iconvEncoding1_info , _base_GHCziIOziEncodingziIconv_iconvEncoding4_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding15_info , _base_GHCziIOziEncodingziIconv_iconvEncoding4_info , _base_GHCziIOziEncodingziIconv_iconvEncoding7_info , _base_GHCziIOziEncodingziIconv_iconvEncoding6_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding6_info , _base_GHCziIOziEncodingziIconv_iconvEncoding8_info , _hs_iconv_open , _base_GHCziIOziEncodingziIconv_iconvEncoding9_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding12_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding11_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding9_info , _base_GHCziIOziEncodingziIconv_iconvEncoding12_info , _base_GHCziIOziEncodingziIconv_iconvEncoding13_info , _base_GHCziIOziEncodingziIconv_iconvEncoding11_info , _base_GHCziIOziEncodingziIconv_iconvEncoding7_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding_info , _base_GHCziIOziEncodingziIconv_iconvEncoding13_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding2_info , _base_GHCziIOziEncodingziIconv_iconvEncoding14_bytes , _base_GHCziIOziEncodingziIconv_iconvEncoding15_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding3_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding8_closure , _base_GHCziIOziEncodingziIconv_iconvEncoding2_closure , _hs_iconv , _base_GHCziIOziEncodingziIconv_iconvEncoding10_bytes , _hs_iconv_close , _base_GHCziIOziEncodingziIconv_iconvEncoding5_closure )
  "_iconv_open", referenced from:
      _hs_iconv_open in libHSbase-4.14.3.0.a(iconv.o)
     (maybe you meant: _hs_iconv_open)
  "_iconv_close", referenced from:
      _hs_iconv_close in libHSbase-4.14.3.0.a(iconv.o)
     (maybe you meant: _hs_iconv_close)
  "_locale_charset", referenced from:
      _localeEncoding in libHSbase-4.14.3.0.a(PrelIOUtils.o)
ld: symbol(s) not found for architecture x86_64

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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