macOS / OS X: has someone managed to make & install it?

[JayBrown]

Has someone managed to make & install it on OS X? I'm on 10.11.6, and I'm getting 3 warnings and 2 errors:

/usr/bin/cc -fstack-protector -W -Wall -Wformat=2 -Wshadow -g -O2   -c -o main.o main.c
In file included from main.c:33:
./lib/compat_sha1.h:38:2: error: "No SHA-1 calculation function available!"
#error "No SHA-1 calculation function available!"
 ^
main.c:134:22: error: variable has incomplete type 'struct compat_sha1'
  struct compat_sha1 sha1_ctx;
                     ^
main.c:134:10: note: forward declaration of 'struct compat_sha1'
  struct compat_sha1 sha1_ctx;
         ^
main.c:144:5: warning: implicit declaration of function 'compat_sha1_init' is invalid in C99 [-Wimplicit-function-declaration]
    compat_sha1_init(&sha1_ctx);
    ^
main.c:159:9: warning: implicit declaration of function 'compat_sha1_update' is invalid in C99 [-Wimplicit-function-declaration]
        compat_sha1_update(&sha1_ctx, data, (size_t) ret);
        ^
main.c:171:5: warning: implicit declaration of function 'compat_sha1_final' is invalid in C99 [-Wimplicit-function-declaration]
    compat_sha1_final(&sha1_ctx, sha1);
    ^
3 warnings and 2 errors generated.
make[1]: *** [main.o] Error 1
make: *** [bitter] Error 2