Building a cross toolchain : about newlib and sysroot option.

[Paul Chavent <paul.chavent@xxxxxxxx>]

Hello.
I try to build a cross-compile toolchain for arm. I would like to use 
binutils-2.15, gcc-3.4.3 and newlib-1.13.0.
I have two questions :

1) About newlib. I configure gcc with the option '--with-newilb'. So 
should i put the newlib directory in gcc sources ? For example :
  $ cp -R src/newlib-1.13.0/newlib src/gcc-3.4.3
Or/And should i put the newlib include dir in a specific directory ? For 
example :
  $ cp src/newlib-1.13.0/newlib/libc/include arm-thumb-elf/sys-include
Or anything else.


2) About the sysroot option : is it usefull if i specify '--with-newlib' 
and that i copy the newlib sources in the gcc ones ?
The sysroot seem to be in the $(PREFIX)/$(TARGET)/sys-root directory... 
but if i want to compile a cross toolchain with newlib, what should i 
put in this directory ?


I'am new to this kind of operations, so escuse me if my question are stupid.

Thanks you.

Happy new year.

Paul.