can't go get

``` bash
# github.com/dutchcoders/gossdeep
Undefined symbols for architecture x86_64:
"_fuzzy_clone", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_clone in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_clone)
"_fuzzy_compare", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_compare in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_compare)
"_fuzzy_digest", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_digest in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_digest)
"_fuzzy_free", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_free in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_free)
"_fuzzy_hash_buf", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_hash_buf in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_hash_buf)
"_fuzzy_hash_filename", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_hash_filename in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_hash_filename)
"_fuzzy_new", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_new in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_new)
"_fuzzy_update", referenced from:
__cgo_8aab6a90c889_Cfunc_fuzzy_update in ssdeep.cgo2.o
(maybe you meant: __cgo_8aab6a90c889_Cfunc_fuzzy_update)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```