Thanks! I've not had the problem with other software. To check I reinstalled iconv with macports brew, and building and installing it direct from GNU sources. however the problem does not seem to be libiconv per se, but libHSbase, and its unclear how to fix that _hs_iconv in libHSbase-4.14.3.0.a(iconv.o) There have been longstanding issues with this library [iconv] int the Haskell ecosystem, cf https://stackoverflow.com/questions/43359289/architecture-x86-64-while-runni... I was hoping there had been progress with binary releases On Mon, Oct 11, 2021 at 10:12 AM YueCompl wrote:

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 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 _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users

-- 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

i would make sure you're using the ghc version you *think* you're using i've never had that problem with a self managed style install (which should be equiv to using ghcup's setup). i'm at 8.10.7 at the moment. whats the output of `which -a ghc` and `which ghc`? mixing several ghc installs of the same version can be a problem. ghcup should just match the official builds generally On Mon, Oct 11, 2021 at 9:55 PM Steven Smith wrote:

I’m a maintainer of the MacPorts ghc port. The MacPorts installations do not have this issue, whether installed from the buildbot binaries or compiled from source, that all work on multiple macOS versions 10.9–11. Here’s the build recipe: https://github.com/macports/macports-ports/blob/master/lang/ghc/Portfile

The iconv symbol issue is known, https://gitlab.haskell.org/ghc/ghc/-/issues/18752, and packages like MacPorts must build around it.

This looks like something specific to your configuration.

If you believe that there is an issue outside your system, please initiate a trac ticket at https://trac.macports.org.

On Oct 11, 2021, at 5:00 AM, David Duke 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

_______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users

Maybe you'd like to install a virtual instance of OSX and test things from clean scratch, I'd expect any routine installation of GHC should work, then add macports/homebrew etc. to bisect the culprit. Free VirtualBox should do, VMWare Fusion or Parallel Desktop can offer even smoother experience at some fees/cost.

On 2021-10-13, at 19:56, David Duke wrote:

Thanks Steven. Looks like it might be something with my system. I reinstalled from macports 8.10.7 @ Carter yes I've been carefully check the compiler version on each trial. However trying to compile a Haskell source gives the same libHSbase error

ndefined symbols for architecture x86_64: "_iconv", referenced from: _hs_iconv in libHSbase-4.14.3.0.a(iconv.o

On Tue, Oct 12, 2021 at 2:54 AM Steven Smith mailto:steve.t.smith@gmail.com> wrote: I’m a maintainer of the MacPorts ghc port. The MacPorts installations do not have this issue, whether installed from the buildbot binaries or compiled from source, that all work on multiple macOS versions 10.9–11. Here’s the build recipe: https://github.com/macports/macports-ports/blob/master/lang/ghc/Portfile https://github.com/macports/macports-ports/blob/master/lang/ghc/Portfile

The iconv symbol issue is known, https://gitlab.haskell.org/ghc/ghc/-/issues/18752 https://gitlab.haskell.org/ghc/ghc/-/issues/18752, and packages like MacPorts must build around it.

This looks like something specific to your configuration.

If you believe that there is an issue outside your system, please initiate a trac ticket at https://trac.macports.org https://trac.macports.org/.

...

On Oct 11, 2021, at 5:00 AM, David Duke mailto: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 http://haskel.org/

-- David Duke Emeritus Professor of Computer Science School of Computing University of Leeds UK E:duke.j.david@gmail.com mailto:E%3Aduke.j.david@gmail.com W:https://engineering.leeds.ac.uk/staff/334/Professor_David_Duke https://engineering.leeds.ac.uk/staff/334/Professor_David_Duke_______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org mailto:Glasgow-haskell-users@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users

The issue would be macports. It uses its own version of the iconv lib and that always gets headaches if the ghc touches anything else. if you’re using macports you have to make sure everything is Mac ports only for ghc linking. Else you have to make sure you don’t touch any macports c Libs via ghc. On Wed, Oct 13, 2021 at 7:57 AM David Duke wrote:

Thanks Steven. Looks like it might be something with my system. I reinstalled from macports 8.10.7 @ Carter yes I've been carefully check the compiler version on each trial. However trying to compile a Haskell source gives the same libHSbase error

ndefined symbols for architecture x86_64:

"_iconv", referenced from:

_hs_iconv in libHSbase-4.14.3.0.a(iconv.o

On Tue, Oct 12, 2021 at 2:54 AM Steven Smith wrote:

...

I’m a maintainer of the MacPorts ghc port. The MacPorts installations do not have this issue, whether installed from the buildbot binaries or compiled from source, that all work on multiple macOS versions 10.9–11. Here’s the build recipe: https://github.com/macports/macports-ports/blob/master/lang/ghc/Portfile

The iconv symbol issue is known, https://gitlab.haskell.org/ghc/ghc/-/issues/18752, and packages like MacPorts must build around it.

This looks like something specific to your configuration.

If you believe that there is an issue outside your system, please initiate a trac ticket at https://trac.macports.org.

On Oct 11, 2021, at 5:00 AM, David Duke 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

-- 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 _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users