linux: convert to the GENTARGETS infrastructure

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/linux/linux.mk b/linux/linux.mk
index 6dfd558c2c3f3d51ae87e893da636fb2537846d0..f8eac6fb435630a8b6da459e0977257ec49d0d84 100644 (file)
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -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.
-       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)
-       $(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS,$(@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 $@
+       $(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))
+       $(if $(BR2_ROOTFS_DEVICE_CREATION_STATIC),,
+               $(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS,$(@D)/.config)
+               $(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS_MOUNT,$(@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