install issue grandunwrap on Mac Catalina

[amyh101]

I am looking to install grandunwrap on Mac v10.15.4 (Catalina) and running into an error using gcc. I have worked through suggestions online including this symlink solution to no avail. I have pasted the reported error. Any suggestions?

error: Command "gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/opt/miniconda3/include -arch x86_64 -I/opt/miniconda3/include -arch x86_64 -I/Users/amplmember/.local/lib/python3.7/site-packages/numpy/core/include -I/Users/amplmember/.local/lib/python3.7/site-packages/numpy/core/include -I/opt/miniconda3/include/python3.7m -c gradunwarp/core/interp3_ext.c -o build/temp.macosx-10.9-x86_64-3.7/gradunwarp/core/interp3_ext.o -MMD -MF build/temp.macosx-10.9-x86_64-3.7/gradunwarp/core/interp3_ext.o.d -O3" failed with exit status 1