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Make sure to fetch the org.openembedded.dev submodule:
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$ git submodule update --init





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To start building, make sure that you have installed all required software:





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http://wiki.openembedded.net/index.php/Required_software





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Also check:





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http://wiki.openembedded.net/index.php/OEandYourDistro





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Make sure to use at least bitbake version 1.8.18





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Then source the setup script:





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$ source setup-oe.sh targets/dss11





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Finally start building:





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$ bitbake dss-image





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You will find the kernel and the rootfs images in:





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angstrom-build/deploy/glibc/images/at91sam9g20ek