Hey Ralf! Saw your message about updating gcc/src to current auto tools, in favor. But, it looks like the autoconf 2.64 release is not out, last I see is 2.63b at the end of March. This and confirmation of --with-build-sysroot working seem to be the only open issues standing in the way of the conversion of the GCC source repository.
What's the eta for the 2.64 autoconf release? How is this to be timed with the end of GCC Stage 1? If autoconf 2.64 is not out by the end of July, does it make sense to use autoconf 2.63 instead? -benjamin