XCode and Dynamic Linking

I'm totally new to XCode and I can't for the life of me figure out how
to get my binary to link against a dynamlic library. I have a very
simple ncurses program:

#include <ncurses.h>

int main() {
initscr();
addch('o');
refresh();
getch();
endwin();
return0;
}

I've trieded adding -lncurses or -ncures to OTHER_LDFAGS under the
options menu for building, but I still keep getting errors about
missing symbols at runtime (which is another odd thing, the app does
acutally compile, but it I get missing symbol errors at runtime).

What should I do?