make fail

Undefined symbols for architecture x86_64:
  "_f16_add", referenced from:
      _u3qes_add in rh.o
      _u3wes_add in rh.o
  "_f16_div", referenced from:
      _u3qes_div in rh.o
      _u3wes_div in rh.o
  "_f16_eq", referenced from:
      _u3qes_add in rh.o
      _u3wes_add in rh.o
      _u3qes_sub in rh.o
      _u3wes_sub in rh.o
      _u3qes_mul in rh.o
      _u3wes_mul in rh.o
      _u3qes_div in rh.o
      ...
  "_f16_le", referenced from:
      _u3qes_lte in rh.o
      _u3wes_lte in rh.o
      _u3qes_gte in rh.o
      _u3wes_gte in rh.o
  "_f16_lt", referenced from:
      _u3qes_lth in rh.o
      _u3wes_lth in rh.o
      _u3qes_gth in rh.o
      _u3wes_gth in rh.o
  "_f16_mul", referenced from:
      _u3qes_mul in rh.o
      _u3wes_mul in rh.o
  "_f16_mulAdd", referenced from:
      _u3qes_fma in rh.o
  "_f16_sqrt", referenced from:
      _u3qes_sqt in rh.o
      _u3wes_sqt in rh.o
  "_f16_sub", referenced from:
      _u3qes_sub in rh.o
      _u3wes_sub in rh.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [bin/urbit] Error 1