gtkdoc-rebase error installing pango-1.24.1 on Darwin 10.4.11

["Mark E. Perkins" <perkinsm%bway.net@localhost>]

Greetings,

My pkgsrc is from HEAD as of about two days ago, but I get the following
error updating devel/pango:

> -- Installing ./html/up.png
> /bin/sh: line 22: gtkdoc-rebase: command not found
> gmake[3]: *** [install-data-local] Error 127
> gmake[3]: Leaving directory `/usr/pkgsrc/devel/pango/work/pango-1.24.1/docs'
> gmake[2]: *** [install-am] Error 2
> gmake[2]: Leaving directory `/usr/pkgsrc/devel/pango/work/pango-1.24.1/docs'
> gmake[1]: *** [install] Error 2
> gmake[1]: Leaving directory `/usr/pkgsrc/devel/pango/work/pango-1.24.1/docs'
> gmake: *** [install-recursive] Error 1
> *** Error code 2
> 
> Stop.
> bmake: stopped in /usr/pkgsrc/devel/pango
> *** Error code 1

I see that Makefile for devel/glib2 includes a workaround:

> # Workaround for Bug#562310
> .if ${OPSYS} == "Darwin" || ${OPSYS} == "SunOS"
> TOOLS_NOOP+=            gtkdoc-rebase
> .endif

This also works for me with pango, but is there a better way?

Thanks,
Mark