BCMath -> gmp?

The licence situation with the BCMath extension is quite annoying. To me, it seems that binary distributions of PHP including BCMath is not allowed. I wonder if the same functionality could be achieved with the gmp (GNU multiple precision arithmetic library)? According to gmp's documentation (info gmp), gmp has the LGPL licence which would enable linking to it from PHP. Although I'm not a good C-programmer, I consider taking a shot at creating PHP gmp extension. However, before I start, I'd like to hear if 1) someone is already working on it 2) someone has comments on the idea -- Greetings from Troels Arvin, Copenhagen, Denmark