I was bitten by this many times in the past, and finally found
	the reason.  I just would like to 

	NetBSD pkgsrc/x11/gtk installs gtk.m4, which is a macro file to be
	used with automake, into /usr/X11R6/share/aclocal not
	/usr/pkgsrc/share/aclocal.
	Many third-party automake input file (configure.in) refers to
	AM_PATH_GTK macro in gtk.m4, and aclocal fails to find gtk.m4 and
	automake fials.

	Is it okay, if we add "@exec ln -s" clause into
	pkgsrc/x11/gtk/pkg/PLIST?  This is the easiest workaround.

itojun