Another Debian developer's efforts to build cross-gcc packages are here: http://www.speedblue.org/cross_compilation/ I started using these to cross-compile kernels when I could no longer use toolchain-source for GCC 4.0. Perhaps his packaging ideas would be useful to you.
-- Eric Cooper e c c @ c m u . e d u -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]