When trying to Make, I get the following error:
In file included from lclib.c:13:
lcintl.h:14:21: error: libintl.h: No such file or directory
lclib.c: In function 'current_month':
lclib.c:18: warning: incompatible implicit declaration of built-in
function 'gettext'
make[1]: *** [lclib.o] Error 1
make: *** [install-recursive] Error 1
I'm on OS X 10.4.3.
libintl.h is part of gettext. gettext is not part of Mac OS X so you'll have to install it separately.