I just cloned samtools and tried to compile it on Mac 10.15, and got this error:

Error: htscodecs submodule files not present.
Try running:
    git submodule update --init --recursive
and then re-run make.

After running this command (within the samtools directory) and re-running make I get the error:
make: *** No rule to make target '../htslib/htscodecs/htscodecs/arith_dynamic.c', needed by '../htslib/hts-object-files'. Stop.

I have htslib cloned at ../htslib

Suggestions?