ARM toolchain for ubuntu Error while compiling?

A Google-search on the "machine `x86_64-unknown' not recognized" error message indicates that this can happen if the config. Guess and config. Sub files in the program you're building are too old to recognize the machine type for 64-bit linux.

I expect that's your problem. You can fix that by replacing the ones in your GCC source tree with newer versions; your system should have some in the usr/share/libtool directory that will work. Alternately, compile in a 32-bit Linux installation, or with "--build=i686-pc-linux-gnu --host=i686-pc-linux-gnu" configure options.

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