crosscompiling a crosscompiler ?

[Tobi]

hello everybody,

i'd like to build a compiler running on cygwin with target
i586-unknown-linux-gnu.
is it possible to build a toolchain like this with a linux->cygwin
crosscompiler (already running on my linux box) ?
how can i tell crosstool to use a crosscompiler ?

i tried setting HOST=i686-pc-cygwin and  CC=i686-pc-cygwin-gcc
but it fails with

checking whether the C compiler works... configure: error: cannot run C
compiled programs.

thanks for your help.

tobi

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