Building RNAz on MacOS Having trouble building RNAz 2.1 on MacOS. Following instructions at https://www.tbi.univie.ac.at/software/RNAz/

tar -xzf RNAz-2.1-tar.gz
cd RNAz-2.1
./configure
make


make fails with 

/usr/bin/clang++ -o RNAz RNAz.o rnaz_utils.o svm_helper.o zscore.o cmdline.o strand.o svm.o -L../librna -lRNA -lm 
Undefined symbols for architecture x86_64:
  "_HairpinE", referenced from:
      _alifold in libRNA.a(alifold.o)
      _fill_arrays in libRNA.a(fold.o)
      _backtrack in libRNA.a(fold.o)
      _stack_energy in libRNA.a(fold.o)
  "_LoopEnergy", referenced from:
      _alifold in libRNA.a(alifold.o)
      _fill_arrays in libRNA.a(fold.o)
      _backtrack in libRNA.a(fold.o)
      _stack_energy in libRNA.a(fold.o)
ld: symbol(s) not found for architecture x86_64


Thinking that compiling for 32-bit might work I tried setting 

CXXFLAGS = -m32
LDFLAGS = -m32


without success (same result). Same result with gmake.

Configure
Configure checks for gcc

...
checking for gcc... gcc
checking whether the C compiler works... yes
...


Makefile

Makefile specifies the following:

CC = gcc
CCDEPMODE = depmode=gcc3
CFLAGS = -g -O2
CPP = gcc -E
CPPFLAGS = 
CXX = g++
CXXDEPMODE = depmode=gcc3
CXXFLAGS = -g -O2


Compiler

Apple LLVM version 10.0.0 (clang-1000.11.45.5)

Target: x86_64-apple-darwin18.2.0

Thread model: posix

InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

Has anyone built this successfully on MacOS? Or perhaps suggestions as to how I might build this successfully? I'm at a loss.
Compile with gcc or remove inline from librna/fold.c:776 and librna/fold.c:846.