################################################################################
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#
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# Patch the linux kernel with RTAI extension
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#
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################################################################################
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LINUX_EXTENSIONS += rtai
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ifeq ($(KERNEL_ARCH),i386)
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RTAI_ARCH = x86
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else ifeq ($(KERNEL_ARCH),x86_64)
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RTAI_ARCH = x86
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else ifeq ($(KERNEL_ARCH),powerpc)
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RTAI_ARCH = ppc
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else
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RTAI_ARCH = $(KERNEL_ARCH)
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endif
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# Prepare kernel patch
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define RTAI_PREPARE_KERNEL
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kver=`$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelversion` ; \
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if test -f $(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/hal-linux-$${kver}-*patch ; then \
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$(APPLY_PATCHES) $(LINUX_DIR) \
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$(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/ \
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hal-linux-$${kver}-*patch ; \
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else \
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echo "No RTAI patch for your kernel version" ; \
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exit 1 ; \
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fi
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endef
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