Problems installing treelang

[Leonardo]

Hello to all,
my name is Leonardo and I'm new to this list.
I would like to play with treelang, but I can't compile it.
this is my config line:

./configure --prefix=/tmp/gcc-4.2.2 --enable-languages="c,c++,treelang"

configure and make are ok, but "make install" doesn't install treelang.

I tried to compile hello.tree but gcc doesn't recognize it:
/usr/bin/ld:hello.tree: file format not recognized; treating as linker script

Am I forgetting some steps?

thanks in advance,
leo