On macOS:
% clang -g -o crock -DCURSES -DHASSLEEP -DHASTIME -DHASEXIT crock.c
Compiled and ran with just a few warnings. (from a tweet by @larsbrinkhoff)
% clang -g -o crock -DCURSES -DHASSLEEP -DHASTIME -DHASEXIT crock.c
Compiled and ran with just a few warnings. (from a tweet by @larsbrinkhoff)