linux: simplify adding new extensions
Curently, all three linux extensions follow the same layout: - test if the extension is enabled - add itself to linux' patch-dependencies - declare a macro, added as the pre-patch hook Except for the macro, all can be commonalised. Add a simple infrastructure for that: - extensions declare themselves in the list of extensions - extensions define their macro - the infra adds them to the patch-dependencies and pre-patch hooks as appropriate Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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@ -327,6 +327,13 @@ endef
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# included here *must* be in the same directory!
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include $(sort $(wildcard linux/linux-ext-*.mk))
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LINUX_PATCH_DEPENDENCIES += $(foreach ext,$(LINUX_EXTENSIONS),\
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$(if $(BR2_LINUX_KERNEL_EXT_$(call UPPERCASE,$(ext))),$(ext)))
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LINUX_PRE_PATCH_HOOKS += $(foreach ext,$(LINUX_EXTENSIONS),\
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$(if $(BR2_LINUX_KERNEL_EXT_$(call UPPERCASE,$(ext))),\
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$(call UPPERCASE,$(ext))_PREPARE_KERNEL))
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$(eval $(kconfig-package))
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# Support for rebuilding the kernel after the cpio archive has
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