Autoconf fails to recognise microblaze-xilinx-linux-gnu toolchain
When integrating an application or library that uses the GNU autoconf into PetaLinux 2012.12, it fails to recognise the microblaze-xilinx-linux-gnu prefix
On upgrading to Petalinux v12.12, you may receive an error similar to the following while building an application or library you've ported from outside Petalinux which utilises autoconf:
checking host system type... Invalid configuration `microblaze-xilinx-linux-gnu': machine `microblaze-xilinx' not recognized configure: error: /bin/sh ../libtestautoconf-0.1/config.sub microblaze-xilinx-linux-gnu failed
An out of date config.sub in your application or library is unable to recognise 'microblaze-xilinx' as a valid architecture-vendor pairing.
Replace the outdated config.sub in your application or library with either the version included in
or the latest from upstream (http://savannah.gnu.org/projects/config) and rebuild.