[Bug libgcc/101655] canadian compile of libgcc uses native cc as the compiler instead of the target cross compiler

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101655

--- Comment #10 from Andreas Schwab <sch...@linux-m68k.org> ---
In a canadian cross, you don't compile the target libraries.  They are already
built while building the cross compiler.