HP-UX Chicken/Egg with binutils?

[Andrew Fabbro]

So to build gcc on HP-UX, I need to build binutils first, as the GNU
docs say gas is required for HP-UX + itanium.  So I go to
compile binutils-2.9.1...and I can't get it to recognize my host...?

> ./configure

Config.guess failed to determine the host type.  You need to specify
one.
> ./configure --host=ia64-hp-hpux11

Invalid configuration `ia64-hp-hpux11': machine `ia64-hp' not
recognized
Invalid configuration `ia64-hp-hpux11': machine `ia64-hp' not
recognized
Unrecognized host system name ia64-hp-hpux11.

> grep ia64 *

Looking through config.guess, it appears to branch based on uname, but
I can't find any place where it would match uname -m's "ia64" on HP-UX
itanium.

So...does binutils support ia64 on HP-UX?  GCC's requirement would
seem to imply yes since it's required, but how to build it?

Thanks.