Commit 9af0ee86 authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Peter Korsgaard
Browse files

linux: convert to the GENTARGETS infrastructure 



Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent af52661d

linux/linux.mk

+61 −65
Original line number Diff line number Diff line
@@ -7,16 +7,18 @@ LINUX_VERSION=$(call qstrip,$(BR2_LINUX_KERNEL_VERSION)) 


# Compute LINUX_SOURCE and LINUX_SITE from the configuration

ifeq ($(LINUX_VERSION),custom)

LINUX_TARBALL:=$(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))

LINUX_SITE:=$(dir $(LINUX_TARBALL))

LINUX_SOURCE:=$(notdir $(LINUX_TARBALL))

LINUX_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))

LINUX_SITE = $(dir $(LINUX_TARBALL))

LINUX_SOURCE = $(notdir $(LINUX_TARBALL))

else

LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2

LINUX_SITE:=$(BR2_KERNEL_MIRROR)/linux/kernel/v2.6/

LINUX_SOURCE = linux-$(LINUX_VERSION).tar.bz2

LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6/

endif



LINUX_DIR:=$(BUILD_DIR)/linux-$(LINUX_VERSION)

LINUX_PATCH=$(call qstrip,$(BR2_LINUX_KERNEL_PATCH))

LINUX_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))



LINUX_INSTALL_IMAGES = YES

LINUX_DEPENDENCIES  += host-module-init-tools



LINUX_MAKE_FLAGS = \

	HOSTCC="$(HOSTCC)" \
@@ -74,27 +76,17 @@ LINUX_IMAGE_PATH=$(KERNEL_ARCH_PATH)/boot/$(LINUX_IMAGE_NAME) 
endif

endif # BR2_LINUX_KERNEL_VMLINUX



# Download

$(LINUX_DIR)/.stamp_downloaded:

	@$(call MESSAGE,"Downloading kernel")

	$(call DOWNLOAD,$(LINUX_SITE),$(LINUX_SOURCE))

	$(foreach patch,$(filter ftp://% http://%,$(LINUX_PATCH)),\

define LINUX_DOWNLOAD_PATCHES

	$(if $(LINUX_PATCHES),

		@$(call MESSAGE,"Download additional patches"))

	$(foreach patch,$(filter ftp://% http://%,$(LINUX_PATCHES)),\

		$(call DOWNLOAD,$(dir $(patch)),$(notdir $(patch)))$(sep))

	mkdir -p $(@D)

	touch $@



# Extraction

$(LINUX_DIR)/.stamp_extracted: $(LINUX_DIR)/.stamp_downloaded

	@$(call MESSAGE,"Extracting kernel")

	mkdir -p $(@D)

	$(Q)$(INFLATE$(suffix $(LINUX_SOURCE))) $(DL_DIR)/$(LINUX_SOURCE) | \

		tar -C $(@D) $(TAR_STRIP_COMPONENTS)=1 $(TAR_OPTIONS) -

	$(Q)touch $@

endef



LINUX_POST_DOWNLOAD_HOOKS += LINUX_DOWNLOAD_PATCHES



# Patch

$(LINUX_DIR)/.stamp_patched: $(LINUX_DIR)/.stamp_extracted

	@$(call MESSAGE,"Patching kernel")

	for p in $(LINUX_PATCH) ; do \

define LINUX_APPLY_PATCHES

	for p in $(LINUX_PATCHES) ; do \

		if echo $$p | grep -q -E "^ftp://|^http://" ; then \

			toolchain/patch-kernel.sh $(@D) $(DL_DIR) `basename $$p` ; \

		elif test -d $$p ; then \
@@ -103,64 +95,66 @@ $(LINUX_DIR)/.stamp_patched: $(LINUX_DIR)/.stamp_extracted 
			toolchain/patch-kernel.sh $(@D) `dirname $$p` `basename $$p` ; \

		fi \

	done

	$(Q)touch $@

endef



LINUX_POST_PATCH_HOOKS += LINUX_APPLY_PATCHES





# Configuration

$(LINUX_DIR)/.stamp_configured: $(LINUX_DIR)/.stamp_patched

	@$(call MESSAGE,"Configuring kernel")

ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)

	$(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) $(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig

KERNEL_SOURCE_CONFIG = $(KERNEL_ARCH_PATH)/configs/$(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig

else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)

	cp $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE) $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig

KERNEL_SOURCE_CONFIG = $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)

endif



define LINUX_CONFIGURE_CMDS

	cp $(KERNEL_SOURCE_CONFIG) $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig

	$(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) buildroot_defconfig

	rm $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig

endif

ifeq ($(BR2_ARM_EABI),y)

	$(call KCONFIG_ENABLE_OPT,CONFIG_AEABI,$(@D)/.config)

else

	$(call KCONFIG_DISABLE_OPT,CONFIG_AEABI,$(@D)/.config)

endif

ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)

	$(if $(BR2_ARM_EABI),

		$(call KCONFIG_ENABLE_OPT,CONFIG_AEABI,$(@D)/.config),

		$(call KCONFIG_DISABLE_OPT,CONFIG_AEABI,$(@D)/.config))

	# As the kernel gets compiled before root filesystems are

	# built, we create a fake initramfs file list. It'll be

	# replaced later by the real list, and the kernel will be

	# rebuilt using the linux26-rebuild-with-initramfs target.

	$(if $(BR2_TARGET_ROOTFS_INITRAMFS),

		touch $(BINARIES_DIR)/rootfs.initramfs

		$(call KCONFIG_ENABLE_OPT,CONFIG_BLK_DEV_INITRD,$(@D)/.config)

		$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_SOURCE,\"$(BINARIES_DIR)/rootfs.initramfs\",$(@D)/.config)

		$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_UID,0,$(@D)/.config)

		$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_GID,0,$(@D)/.config)

		$(call KCONFIG_DISABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_NONE,$(@D)/.config)

	$(call KCONFIG_ENABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_GZIP,$(@D)/.config)

endif

ifneq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)

		$(call KCONFIG_ENABLE_OPT,CONFIG_INITRAMFS_COMPRESSION_GZIP,$(@D)/.config))

	$(if $(BR2_ROOTFS_DEVICE_CREATION_STATIC),,

		$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS,$(@D)/.config)

	$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS_MOUNT,$(@D)/.config)

endif

ifeq ($(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV),y)

	$(call KCONFIG_SET_OPT,CONFIG_UEVENT_HELPER_PATH,\"/sbin/mdev\",$(@D)/.config)

endif

	$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) oldconfig

	$(Q)touch $@

		$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS_MOUNT,$(@D)/.config))

	$(if $(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV),

		$(call KCONFIG_SET_OPT,CONFIG_UEVENT_HELPER_PATH,\"/sbin/mdev\",$(@D)/.config))

	yes '' | $(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) oldconfig

endef



# Compilation. We make sure the kernel gets rebuilt when the

# configuration has changed.

$(LINUX_DIR)/.stamp_compiled: $(LINUX_DIR)/.stamp_configured $(LINUX_DIR)/.config

	@$(call MESSAGE,"Compiling kernel")

define LINUX_BUILD_CMDS

	$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_IMAGE_NAME)

	@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then 	\

		$(TARGET_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) modules ;	\

	fi

	$(Q)touch $@

endef





# Installation

$(LINUX_DIR)/.stamp_installed: $(LINUX_DIR)/.stamp_compiled

	@$(call MESSAGE,"Installing kernel")

ifeq ($(BR2_LINUX_KERNEL_INSTALL_TARGET),y)

define LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET

	install -m 0644 -D $(LINUX_IMAGE_PATH) $(TARGET_DIR)/boot/$(LINUX_IMAGE_NAME)

endef

endif



define LINUX_INSTALL_IMAGES_CMDS

	cp $(LINUX_IMAGE_PATH) $(BINARIES_DIR)

endef



define LINUX_INSTALL_TARGET_CMDS

	$(LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET)

	# Install modules and remove symbolic links pointing to build

	# directories, not relevant on the target

	@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then 	\
@@ -169,17 +163,18 @@ endif 
		rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/build ;		\

		rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/source ;	\

	fi

	$(Q)touch $@

endef



linux linux26: host-module-init-tools $(LINUX_DEPENDENCIES) $(LINUX_DIR)/.stamp_installed

$(eval $(call GENTARGETS,,linux))



linux-menuconfig linux-xconfig linux-gconfig linux-nconfig linux26-menuconfig linux26-xconfig linux26-gconfig linux26-nconfig: dirs $(LINUX_DIR)/.stamp_configured

	$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) \

		$(subst linux-,,$(subst linux26-,,$@))

	rm -f $(LINUX_DIR)/.stamp_{built,target_installed,images_installed}



# Support for rebuilding the kernel after the initramfs file list has

# been generated in $(BINARIES_DIR)/rootfs.initramfs.

$(LINUX_DIR)/.stamp_initramfs_rebuilt: $(LINUX_DIR)/.stamp_installed $(BINARIES_DIR)/rootfs.initramfs

$(LINUX_DIR)/.stamp_initramfs_rebuilt: $(LINUX_DIR)/.stamp_target_installed $(LINUX_DIR)/.stamp_images_installed $(BINARIES_DIR)/rootfs.initramfs

	@$(call MESSAGE,"Rebuilding kernel with initramfs")

	# Remove the previously generated initramfs which was empty,

	# to make sure the kernel will actually regenerate it.
@@ -194,6 +189,7 @@ $(LINUX_DIR)/.stamp_initramfs_rebuilt: $(LINUX_DIR)/.stamp_installed $(BINARIES_ 
# after it generated the initramfs list of files.

linux-rebuild-with-initramfs linux26-rebuild-with-initramfs: $(LINUX_DIR)/.stamp_initramfs_rebuilt





ifeq ($(BR2_LINUX_KERNEL),y)

TARGETS+=linux

endif