building on Mac OS 10.3

Mac OS 10.3 has an automake (1.6.3) too old for the recent grep changes:

hydrogen:~/Projects/$ make
cd . && /bin/sh /Users/elliotth/Projects/ --run aclocal
aclocal: 96: macro `AM_GNU_GETTEXT' not found in library
aclocal: 104: macro `AM_SEP' not found in library
make: *** [aclocal.m4] Error 1

presumably other Unixes ship with an automake that's too old, and we're happy saying that anyone wanting to build grep has to build their own automake first?

(i don't much care; i'm just pointing this out in case it's not well known that Mac OS has fairly old versions of stuff like make and automake. and grep.)