1 | # |
2 | # Copyright (C) 2006-2011 OpenWrt.org |
3 | # |
4 | # This is free software, licensed under the GNU General Public License v2. |
5 | # See /LICENSE for more information. |
6 | # |
7 | |
8 | KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ |
9 | CROSS_COMPILE="$(KERNEL_CROSS)" \ |
10 | ARCH="$(LINUX_KARCH)" \ |
11 | KBUILD_HAVE_NLS=no \ |
12 | CONFIG_SHELL="$(BASH)" |
13 | |
14 | ifdef CONFIG_STRIP_KERNEL_EXPORTS |
15 | KERNEL_MAKEOPTS += \ |
16 | EXTRA_LDSFLAGS="-I$(KERNEL_BUILD_DIR) -include symtab.h" |
17 | endif |
18 | |
19 | INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt |
20 | |
21 | ifneq (,$(KERNEL_CC)) |
22 | KERNEL_MAKEOPTS += CC="$(KERNEL_CC)" |
23 | endif |
24 | |
25 | export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include |
26 | |
27 | # defined in quilt.mk |
28 | Kernel/Patch:=$(Kernel/Patch/Default) |
29 | ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"") |
30 | ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"") |
31 | define Kernel/Prepare/Default |
32 | bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS) |
33 | $(Kernel/Patch) |
34 | touch $(LINUX_DIR)/.quilt_used |
35 | endef |
36 | else |
37 | ifeq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"") |
38 | define Kernel/Prepare/Default |
39 | git clone $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR) |
40 | endef |
41 | else |
42 | define Kernel/Prepare/Default |
43 | git clone --reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY) $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR) |
44 | endef |
45 | endif |
46 | endif |
47 | else |
48 | define Kernel/Prepare/Default |
49 | mkdir -p $(KERNEL_BUILD_DIR) |
50 | if [ -d $(LINUX_DIR) ]; then \ |
51 | rmdir $(LINUX_DIR); \ |
52 | fi |
53 | ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR) |
54 | endef |
55 | endif |
56 | |
57 | ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y) |
58 | define Kernel/SetInitramfs |
59 | mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old |
60 | grep -v -e INITRAMFS -e CONFIG_RD_ -e CONFIG_BLK_DEV_INITRD $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config |
61 | echo 'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR)/.config |
62 | echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config |
63 | echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config |
64 | echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config |
65 | echo "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR)/.config |
66 | echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),CONFIG_INITRAMFS_COMPRESSION_GZIP=y\nCONFIG_RD_GZIP=y,# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set\n# CONFIG_RD_GZIP is not set)" >> $(LINUX_DIR)/.config |
67 | echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),CONFIG_INITRAMFS_COMPRESSION_BZIP2=y\nCONFIG_RD_BZIP2=y,# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set\n# CONFIG_RD_BZIP2 is not set)" >> $(LINUX_DIR)/.config |
68 | echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),CONFIG_INITRAMFS_COMPRESSION_LZMA=y\nCONFIG_RD_LZMA=y,# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set\n# CONFIG_RD_LZMA is not set)" >> $(LINUX_DIR)/.config |
69 | echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),CONFIG_INITRAMFS_COMPRESSION_LZO=y\nCONFIG_RD_LZO=y,# CONFIG_INITRAMFS_COMPRESSION_LZO is not set\n# CONFIG_RD_LZO is not set)" >> $(LINUX_DIR)/.config |
70 | echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),CONFIG_INITRAMFS_COMPRESSION_XZ=y\nCONFIG_RD_XZ=y,# CONFIG_INITRAMFS_COMPRESSION_XZ is not set\n# CONFIG_RD_XZ is not set)" >> $(LINUX_DIR)/.config |
71 | endef |
72 | else |
73 | define Kernel/SetInitramfs |
74 | mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old |
75 | grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config |
76 | echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config |
77 | endef |
78 | endif |
79 | |
80 | define Kernel/Configure/Default |
81 | $(LINUX_CONF_CMD) > $(LINUX_DIR)/.config.target |
82 | # copy CONFIG_KERNEL_* settings over to .config.target |
83 | awk '/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR)/.config >> $(LINUX_DIR)/.config.target |
84 | echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target |
85 | echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target |
86 | echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target |
87 | $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override |
88 | $(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config |
89 | $(call Kernel/SetInitramfs) |
90 | -$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts |
91 | rm -rf $(KERNEL_BUILD_DIR)/modules |
92 | endef |
93 | |
94 | define Kernel/CompileModules/Default |
95 | rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map |
96 | +$(MAKE) $(KERNEL_MAKEOPTS) modules |
97 | endef |
98 | |
99 | OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id |
100 | |
101 | define Kernel/CompileImage/Default |
102 | $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init) |
103 | +$(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME) |
104 | $(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL) |
105 | $(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf |
106 | endef |
107 | |
108 | define Kernel/Clean/Default |
109 | rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured |
110 | rm -f $(LINUX_KERNEL) |
111 | $(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean |
112 | endef |
113 | |
114 | |
115 | |