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Force Unwind required


Hi,

I'm trying to build my crosscompiler.
I'm new in crosscompiling and, so, I have some question.

1) Is there a place that I could find some generic information about
building a toolchain? 
Saying better, I need some information about what kind of tasks each
component of toolchain does (binutils, gcc, glibc, newlib)
There is many differences between tutorials from version to version, so
I'm a little confuse, principally about "--host", "--target" and
"--build" parameters.

2) Newlib and Glibc are totally independents? Could I use only one of
these?

3) My Glibc is requesting FORCED UNWIND. How I can enable this feature
in my compiler?

Thanks in advise.

Yuri Ribeiro


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