....../bin/ld: minibash.o: in function `main':
/..../src/minibash.c:309:(.text+0x2c): 
    undefined reference to `tommy_hashdyn_init'
....../bin/ld: /.../src/minibash.c:383:(.text+0x606): 
    undefined reference to `tommy_hashdyn_foreach'
....../bin/ld: /.../src/minibash.c:384:(.text+0x615): 
    undefined reference to `tommy_hashdyn_done'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:29: minibash] Error 1