Firefox 11.0 compiling seems to silently fail while still going on Debian Squeeze O_O
 

No errors displayed on the terminal, but config.log has major errors and thus surprised it didn't show on the terminal!

What in the world is going on?

It appeared that it was still broken, even when it looked like it was fixed, on the terminal before.

Folks, the problem has been solved.

Just do:

./configure

then

make

The other methods are a bunch of bull.

why are you compiling Firefox? just download, extract, create shortcut, launch.