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##################################################
# Linux RTAI extensions
#
# Patch the linux kernel with RTAI extension
##################################################
ifeq ($(BR2_LINUX_KERNEL_EXT_RTAI),y)
# Add dependency to RTAI (user-space) which provide kernel patches
LINUX_DEPENDENCIES += rtai-patch
RTAI_PATCH = $(call qstrip,$(BR2_LINUX_KERNEL_EXT_RTAI_PATCH))
ifeq ($(KERNEL_ARCH),i386)
RTAI_ARCH = x86
else ifeq ($(KERNEL_ARCH),x86_64)
RTAI_ARCH = x86
else ifeq ($(KERNEL_ARCH),powerpc)
RTAI_ARCH = ppc
else
RTAI_ARCH = $(KERNEL_ARCH)
endif
# Prepare kernel patch
ifeq ($(RTAI_PATCH),)
define RTAI_PREPARE_KERNEL
kver=`$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelversion` ; \
if test -f $(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/hal-linux-$${kver}-*patch ; then \
support/script/apply-patches.sh $(LINUX_DIR) \
$(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/ \
hal-linux-$${kver}-*patch ; \
else \
echo "No RTAI patch for your kernel version" ; \
exit 1 ; \
fi
endef
else
define RTAI_PREPARE_KERNEL
support/script/apply-patches.sh \
$(LINUX_DIR) \
$(dir $(RTAI_PATCH)) \
$(notdir $(RTAI_PATCH))
endef
endif
LINUX_PRE_PATCH_HOOKS += RTAI_PREPARE_KERNEL
endif #BR2_LINUX_EXT_RTAI
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