libor-crypto.a linker error on MacOS with enable-debug flag

[riordant]

Steps to reproduce:
./configure --enable-debug
make

output:

Undefined symbols for architecture x86_64:
  "_libscrypt_scrypt", referenced from:
      _secret_to_key_compute_key in libor-crypto.a(crypto_s2k.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

On MacOS 10.13.4

[psolstice]

Works fine for me on 10.14.3, latest Xcode

$ brew list
autoconf	cabextract	icu4c		libtool		openssl		protobuf	qrencode	sphinx-doc	winetricks
automake	cmake		iperf		makedepend	p7zip		python		qt		sqlite		xz
berkeley-db@4	coreutils	libevent	miniupnpc	pcre		python3		readline	unrar		zsh
boost		gdbm		libpng		ncurses		pkg-config	python@2	smartmontools	wine

[riordant]

Was a system-specific issue.
I'm not sure what the exact cause was, but removing and reinstalling brew fixed it for me.