modyfing cross toolchain compilation

[Aleksander]

hello!

Few days ago, when playing with linux-ppc, I have identified a bug with
PowerPC toolchain. It turns out that PowerPC e500 core is not compilant
with generic ppc ISA - it lacks of 'lwsync' instruction. This instruction
is used in libstdc++.so library, so I need to modify toolchain build
process by adding -me500v2 option, when building  libraries. Can you tell
me how to do it, so I can test this potential soluton?

-- 
regards
aleek