The recipes-rt recipes provide package and image recipes for using and testing
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the PREEMPT_RT kernel. The core-image-rt*.bb images are minimal images with
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a couple extra packages, including rt-tests. In order to build the image with
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the linux-yocto-rt kernel, be sure to include the following line in your
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local.conf, bblayers.conf, or your $MACHINE.conf.
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PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-rt"
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If you are creating a new BSP which should use linux-yocto-rt by default,
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use the line above in the $MACHINE.conf in your BSP layer, and specify the
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following in a linux-yocto-rt bbappend recipe:
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COMPATIBLE_MACHINE_$MACHINE = $MACHINE
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