Building (cross) gcc 3.3 on AMD64 fails

[engel at Mathematik.Uni-Marburg.de]

Hi,

I'm running FreeBSD 5.2.1RC on an Athlon 64 3000+
machine (Gigabyte GA-K8VT800 with VIA 8T800 chipset).

When I try to build a gcc/g++ cross compiler (3.3.2/3.3.3)
on the machine for a mips64el-elf target, the build fails
with the following error (in configure after
"checking for main in -lunwind... no"):

*** Configuration amd64-unknown-freebsd5.2.1 not supported

When I try to build the native compiler /usr/ports/lang/gcc33,
I get the equivalent message. Are there any patches required
to compile gcc 3.3 on AMD64?

regards,
    Michael Engel