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@@ -1,3 +1,21 @@
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ROOTFS_BOOTSTRAP_INSTALL = ""
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IMAGE_TYPES_MASKED += "container"
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IMAGE_TYPEDEP_container = "tar.bz2"
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+
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+python __anonymous() {
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+ if "container" in d.getVar("IMAGE_FSTYPES") and \
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+ d.getVar("IMAGE_CONTAINER_NO_DUMMY") != "1" and \
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+ "linux-dummy" not in d.getVar("PREFERRED_PROVIDER_virtual/kernel"):
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+ msg = '"container" is in IMAGE_FSTYPES, but ' \
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+ 'PREFERRED_PROVIDER_virtual/kernel is not "linux-dummy". ' \
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+ 'Unless a particular kernel is needed, using linux-dummy will ' \
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+ 'prevent a kernel from being built, which can reduce ' \
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+ 'build times. If you don\'t want to use "linux-dummy", set ' \
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+ '"IMAGE_CONTAINER_NO_DUMMY" to "1".'
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+
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+ # Raising skip recipe was Paul's clever idea. It causes the error to
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+ # only be shown for the recipes actually requested to build, rather
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+ # than bb.fatal which would appear for all recipes inheriting the
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+ # class.
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+ raise bb.parse.SkipRecipe(msg)
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+}
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