general cygwin cross compiling question

[Nils Roeder]

Hi there,

apologies if my question is already answered in some faq,
i did search but could not find anything. If something exists i 
appreciate if someone helps me to find it.

I am wondering about the general concept of a cygwin hosted cross 
compiler to linux targets :
build=cygwin
host=cygwin
target=armxscale-linux,ppc-linux, etc

As far as i can see crosstools are using binutils,cygwin and gcc to
attempt to create such compilers... ?
I understand the necessity of the cygwin headers for the HOST part
of the compiler but what code are the binaries running under linux
build with if no TARGET glibc/newlin/uClibc is available ?
Would i not need to create a HOST cross compiler part with cygwin and
a TARGET crosscompiler part with e.g. glibc under cygwin ?
(And if so, i admit i would not have a clear idea how to approach this).

Cheers,
  Nils

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