make failure on macOS
I get the following build errors when trying to compile MKCL 1.1.10 and HEAD (at db99a9d9) on macOS 10.12.2:
mkcc.c:290:3: error: Incomplete mkcc_set_self_context();
# error Incomplete mkcc_set_self_context();
^
mkcc.c:298:31: error: use of undeclared identifier 'os_self'
char * true_self = realpath(os_self, NULL);
^
2 errors generated.
Full logs: https://gist.github.com/dunn/2e9e1ee8fe2fb0f3cc14c7504f23d4b0#file-02-make-L18-L24
Let me know if there's anything else you need for debugging.