Doesn't compile on Debian GNU/Linux i686... says something about -Werror

[janicez]

Parameter lists without types are only allowed in function definitions. Your code for sha2 is broken.

[hhm0]

Setting LDFLAGS=-lbsd and using the -k flag for bmake (and maybe using CC=clang) helps compile more executables; find . -executable -type f can show which executables were generated.