macOS High Sierra 10.13 (beta) breaks linker

[beanieboi]

After upgrading from 10.12 to 10.13 (public beta 2) crystal does not compile my code anymore. I reinstalled crystal after the upgrade and crystal itself compiles fine on 10.13 via homebrew.
This seems like a general issue with the linker and not specific to my code. Just in case the code is open source (https://github.com/beanieboi/weltreise-log)

Command: crystal build -s --verbose src/weltreise_log.cr

Log

Parse:                             00:00:00.0008050 (   0.25MB)
Semantic (top level):              00:00:00.3232630 (  44.08MB)
Semantic (new):                    00:00:00.0021460 (  44.08MB)
Semantic (type declarations):      00:00:00.0271950 (  44.08MB)
Semantic (abstract def check):     00:00:00.0008200 (  44.08MB)
Semantic (ivars initializers):     00:00:00.0069600 (  44.08MB)
Semantic (cvars initializers):     00:00:00.0039810 (  52.08MB)
Semantic (main):                   00:00:00.6393420 ( 140.52MB)
Semantic (cleanup):                00:00:00.0008860 ( 140.52MB)
Semantic (recursive struct check): 00:00:00.0009780 ( 140.52MB)
Codegen (crystal):                 00:00:00.7411230 ( 188.52MB)
Codegen (bc+obj):                  00:00:00.2387010 ( 188.52MB)
cc "${@}" -o '/Users/ben/Development/com.abwesend.weltreise.log/weltreise_log'  -rdynamic  -lz `command -v pkg-config > /dev/null && pkg-config --libs libssl || printf %s '-lssl -lcrypto'` `command -v pkg-config > /dev/null && pkg-config --libs libcrypto || printf %s '-lcrypto'` -lpcre -lgc -lpthread /usr/local/Cellar/crystal-lang/0.23.1/src/ext/libcrystal.a -levent -liconv -ldl -L/usr/lib -L/usr/local/lib _main.o A-rray40S-tring41.o P-ointer40S-tring41.o C-allS-tack.o A-rgumentE-rror.o A-rray40P-ointer40V-oid4141.o P-ointer40P-ointer40V-oid4141.o E-xception.o P-ointer40L-ibU-nwind5858E-xception41.o U-I-nt64.o S-taticA-rray40I-nt8443225641.o P-ointer40I-nt841.o P-ointer40V-oid41.o F-iber.o T-hread.o S-et40T-hread41.o H-ash40T-hread4432N-il41.o P-ointer40H-ash58-5c8fd5776cf345ec94b91bf7a5f7e50f.o A-rray40I-nt3241.o S-tring5858B-uilder.o S-tring.o G-C-.o S-lice40T-41.o S-lice40U-I-nt841.o I-O-5858E-ncoder.o I-conv.o M-ath.o I-nt32.o P-ointer40U-I-nt841.o I-ndexE-rror.o E-rrno.o 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Package libssl was not found in the pkg-config search path.
Perhaps you should add the directory containing `libssl.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libssl' found
Package libcrypto was not found in the pkg-config search path.
Perhaps you should add the directory containing `libcrypto.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libcrypto' found
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: execution of command failed with code: 1: `cc "${@}" -o '/Users/ben/Development/com.abwesend.weltreise.log/weltreise_log'  -rdynamic  -lz `command -v pkg-config > /dev/null && pkg-config --libs libssl || printf %s '-lssl -lcrypto'` `command -v pkg-config > /dev/null && pkg-config --libs libcrypto || printf %s '-lcrypto'` -lpcre -lgc -lpthread /usr/local/Cellar/crystal-lang/0.23.1/src/ext/libcrystal.a -levent -liconv -ldl -L/usr/lib -L/usr/local/lib`

[faustinoaq]

I think you need to install openssl.

https://github.com/crystal-lang/crystal/wiki/All-required-libraries#mac-osx-with-homebrew

On Linux openssl is required, MacOS don't mention it but I think openssl is required on Mac too

[beanieboi]

@faustinoaq thank you for looking into this. I have openssl installed. Crystal was working fine before the upgrade. Maybe some paths changed with related to the ssl libs. there is also a thread on homebrew and I think It might be related Homebrew/homebrew-core#14418

[sdogruyol]

This is more like an OS X issue, can we close this?

[RX14]

This may well actually be a homebrew issue. Please reopen once there is more info.

[gokmen]

as a side note, it works well after adding openssl to pkg-config's path

λ ~/ echo $PKG_CONFIG_PATH
/usr/local/opt/openssl/lib/pkgconfig

since it's (openssl) not default anymore on macOS High Sierra (switched to LibreSSL instead)

[paulcsmith]

@gokmen I added this to my .zshrc (.bashrc if you're using bash) after installing openssl with brew install openssl and it worked great! Thanks

export PKG_CONFIG_PATH=/usr/local/opt/openssl/lib/pkgconfig

[akzhan]

See also #4676.

[robacarp]

for fish shells, just run: set -U -x PKG_CONFIG_PATH /usr/local/opt/openssl/lib/pkgconfig.