problems building firefox

[Mike Hunter]

Hi guys,

I have a feeling the answer to my question is "use portupgrade!" but
portupgrade is really broken on my machine.

I'm trying to build the latest version of firefox (DISTVERSION=1.5,
PORTREVISION=5, PORTEPOCH=1), but I am having issues:

---------------------------------------------------------------
gmake[2]: Entering directory `/usr/ports/www/firefox/work/mozilla/modules/libimg'
gmake[2]: *** No rule to make target `png/Makefile.in', needed by `png/Makefile'.  Stop.
gmake[2]: Leaving directory `/usr/ports/www/firefox/work/mozilla/modules/libimg'
gmake[1]: *** [tier_9] Error 2
gmake[1]: Leaving directory `/usr/ports/www/firefox/work/mozilla'
gmake: *** [default] Error 2
*** Error code 2

Stop in /usr/ports/www/firefox.

---------------------------------------------------------------

I've tried upgrading libimg and gnu-autotools but I have not had success.

I have a fresh cvsup of ports and I'm using FreeBSD 5.4-STABLE.

Any help would be greatly appreciated!

Mike