[Bug 3193] Need to use CFI_ wrappers to build NPTL with gcc 4.2.1/binutils 2.17

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3193

--- Comment #4 from Bernhard Reutner-Fischer <aldot at uclibc.org>  ---
We have a GCC_PREREQ() macro, but this does of course not handle the assembler
and you could in theory run gcc-old with a binutils-new so this is not a real
option.
So we really need to use some assembler macro to be on the safe side..

Rob, can you put some sed to turn off CFI in your build scripts?

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