Hi Madhu, > However with binutils-2.29, calling `as --64' results in > Fatal error: no compiled in support for x86_64 > > Doesn't the enable-targets=all include support for x86_64 in a 32bit > gas? No. You need to add --enable-64-bit-bfd to the configure command line to get this support. (When using --enable-targets=all). Cheers Nick