openGL update available on mac ADC site was Re: tiff doesn't build on leopard

[CHENG Gao]

> i was facing this problem earlier today - i simply downloaded the official source tarball from the libtiff website, untarred
> in the work dir of the package and installed away.. If you dont care about the ports registry you could compile directly; it
> worked fine for me
Maybe a better way is
download source
uncompress to work dir
do ./configure and make
then do sudo port install libtiff

thus it'll be put into registry correctly.

I did this for some package  (forgot its name) in this way since
mysteriously it can not be installed by "port install" directly.