MacOS tar.gz bundle: playground fails on libiconv

[wmannis]

Crystal version: 0.31.1 (also tested 0.31.0, which fails, too).
MacOS version: 10.14.6.

I am able to compile simple Crystal programs (I'm trying it for the first time today). However, when I try to run the playground with crystal play, once I connect to the URL the spinning start/stop button eventually announces a disconnect, and I get this in the terminal —

Listening on http://127.0.0.1:8080
Undefined symbols for architecture x86_64:
  "_iconv", referenced from:
      _*Iconv#convert<Pointer(Pointer(UInt8)), Pointer(UInt64), Pointer(Pointer(UInt8)), Pointer(UInt64)>:UInt64 in I-conv.o
  "_iconv_close", referenced from:
      _*Iconv#close:Nil in I-conv.o
  "_iconv_open", referenced from:
      _*Iconv#initialize<String, String, (Symbol | Nil)>:Nil in I-conv.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: execution of command failed with code: 1: `cc "${@}" -o '/Users/xxxxx/.cache/crystal/crystal-run-play-1-1.tmp'  -rdynamic  -lz `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libssl || printf %s '-lssl -lcrypto'` `command -v pkg-config > /dev/null && pkg-config --libs --silence-errors libcrypto || printf %s '-lcrypto'` -lpcre /Users/xxxxx/local/pkg/crystal-0.31.1-1/embedded/lib/libgc.a -lpthread /Users/xxxxx/local/pkg/crystal-0.31.1-1/src/ext/libcrystal.a -levent -liconv -ldl -L/Users/xxxxx/local/pkg/crystal-0.31.1-1/embedded/lib -L/usr/lib -L/usr/local/lib`

There is a libiconv.2.dylib in /usr/lib, so I'm not entirely sure where the error is.

[jhass]

I needed a export LIBRARY_PATH=/usr/local/Cellar/openssl/1.0.2t/lib but afterwards I couldn't reproduce on 10.15.1.

Do you use Homebrew? Does the Homebrew version work for you?

[wmannis]

Do you use Homebrew? Does the Homebrew version work for you?

I do not, and was hoping not to just to do some testing.

[rdp]

I tried the tarball with a few dependencies installed via homebrew (libevent, pkg-config, openssl)
and it seemed to work OK here 10.14.6

$ pwd
/Users/packrd/dev/downloads/crystal-0.31.1-1
$ ./bin/crystal play
Listening on http://127.0.0.1:8080
...

I assume the right symbols are there?

$ nm -a /usr/lib/libiconv.2.4.0.dylib | grep iconv
0000000000002360 T _iconv
...
0000000000002382 T _iconv_close
...

Possibly multiple versions of iconv around? #7789