On Saturday, March 05, 2011 14:08:04 H.J. Lu wrote:
> Many x32 bugs are fixed in kernel, glibc, binutils and GCC:
> 
> https://sites.google.com/site/x32abi/
> 
> The major remaining issues are glibc/gcc testsuite failures,
> kernel core dump and signal handler unwind.

are you getting a unique host tuple for this ?  or are you extending x86_64-
linux-gnu ?  so the only way of knowing which ABI is to check for the output 
of the compiler+compiler flags ?
-mike