Undefined symbols for architecture x86_64:
  "_SHA1_Final", referenced from:
      digest_file(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in asdcp-util.o
  "_SHA1_Init", referenced from:
      digest_file(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in asdcp-util.o
  "_SHA1_Update", referenced from:
      digest_file(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in asdcp-util.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[2]: *** [asdcp-util] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1