There are at least two bugs in the linker from Xcode 3.1
which will prevent gcc43 from building. The first one manifests
itself as a duplicate symbol in both tree-inline.o and libbackend.a
(which contains tree-inline.o already) when linking cc1plus-dummy.
This can be hacked around by removing the extra instance of
tree-inline.o from gcc/cp/Make-lang.in. However this shouldn't
be required since a unix linker should ignore duplicate symbols
from a static library. Even with this workaround the build will
fail later when linking parts of libjava. For now if you need gcc43
and the iPhoneSDK, I would revert to Xcode 3.0, build gcc43
and then reinstall the iPhoneSDK. Beware though that the Xcode
3.1 linker definitely has issues.
Jack
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