build: use busybox gzip compatible force option
[openwrt/staging/chunkeey.git] / include / kernel-defaults.mk
1 #
2 # Copyright (C) 2006-2015 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 ifdef CONFIG_STRIP_KERNEL_EXPORTS
9 KERNEL_MAKEOPTS += \
10 EXTRA_LDSFLAGS="-I$(KERNEL_BUILD_DIR) -include symtab.h"
11 endif
12
13 INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt
14
15 ifneq (,$(KERNEL_CC))
16 KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
17 endif
18
19 export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include
20
21 # defined in quilt.mk
22 Kernel/Patch:=$(Kernel/Patch/Default)
23
24 ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"")
25 ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"")
26 define Kernel/Prepare/Default
27 xzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
28 $(Kernel/Patch)
29 $(if $(QUILT),touch $(LINUX_DIR)/.quilt_used)
30 endef
31 else
32 define Kernel/Prepare/Default
33 xzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
34 endef
35 endif
36 else
37 define Kernel/Prepare/Default
38 mkdir -p $(KERNEL_BUILD_DIR)
39 if [ -d $(LINUX_DIR) ]; then \
40 rmdir $(LINUX_DIR); \
41 fi
42 ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR)
43 endef
44 endif
45
46 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
47 ifeq ($(strip $(CONFIG_EXTERNAL_CPIO)),"")
48 define Kernel/SetInitramfs/PreConfigure
49 grep -v -e INITRAMFS -e CONFIG_RD_ -e CONFIG_BLK_DEV_INITRD $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
50 echo 'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR)/.config
51 echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
52 endef
53 else
54 define Kernel/SetInitramfs/PreConfigure
55 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
56 echo 'CONFIG_INITRAMFS_SOURCE="$(call qstrip,$(CONFIG_EXTERNAL_CPIO))"' >> $(LINUX_DIR)/.config
57 endef
58 endif
59
60 define Kernel/SetInitramfs
61 rm -f $(LINUX_DIR)/.config.prev
62 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
63 $(call Kernel/SetInitramfs/PreConfigure)
64 echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
65 echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
66 echo "$(if $(CONFIG_TARGET_INITRAMFS_FORCE),CONFIG_INITRAMFS_FORCE=y,# CONFIG_INITRAMFS_FORCE is not set)" >> $(LINUX_DIR)/.config
67 echo "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR)/.config
68 echo -e "$(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)" >> $(LINUX_DIR)/.config
69 echo -e "$(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)" >> $(LINUX_DIR)/.config
70 echo -e "$(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)" >> $(LINUX_DIR)/.config
71 echo -e "$(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)" >> $(LINUX_DIR)/.config
72 echo -e "$(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)" >> $(LINUX_DIR)/.config
73 echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZ4),CONFIG_INITRAMFS_COMPRESSION_LZ4=y\nCONFIG_RD_LZ4=y,# CONFIG_INITRAMFS_COMPRESSION_LZ4 is not set\n# CONFIG_RD_LZ4 is not set)" >> $(LINUX_DIR)/.config
74 endef
75 else
76 endif
77
78 define Kernel/SetNoInitramfs
79 mv $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.old
80 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config.set
81 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config.set
82 echo '# CONFIG_INITRAMFS_FORCE is not set' >> $(LINUX_DIR)/.config.set
83 endef
84
85 define Kernel/Configure/Default
86 rm -f $(LINUX_DIR)/localversion
87 $(LINUX_CONF_CMD) > $(LINUX_DIR)/.config.target
88 # copy CONFIG_KERNEL_* settings over to .config.target
89 awk '/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR)/.config >> $(LINUX_DIR)/.config.target
90 echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target
91 echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target
92 echo "CONFIG_KALLSYMS_UNCOMPRESSED=y" >> $(LINUX_DIR)/.config.target
93 $(SCRIPT_DIR)/package-metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config $(KERNEL_PATCHVER) > $(LINUX_DIR)/.config.override
94 $(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config.set
95 $(call Kernel/SetNoInitramfs)
96 rm -rf $(KERNEL_BUILD_DIR)/modules
97 cmp -s $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev || { \
98 cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config; \
99 cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev; \
100 }
101 $(_SINGLE) [ -d $(LINUX_DIR)/user_headers ] || $(KERNEL_MAKE) INSTALL_HDR_PATH=$(LINUX_DIR)/user_headers headers_install
102 grep '=[ym]' $(LINUX_DIR)/.config.set | LC_ALL=C sort | mkhash md5 > $(LINUX_DIR)/.vermagic
103 endef
104
105 define Kernel/Configure/Initramfs
106 $(call Kernel/SetInitramfs)
107 endef
108
109 define Kernel/CompileModules/Default
110 rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
111 +$(KERNEL_MAKE) modules
112 endef
113
114 OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id
115
116 # AMD64 shares the location with x86
117 ifeq ($(LINUX_KARCH),x86_64)
118 IMAGES_DIR:=../../x86/boot
119 endif
120
121 define Kernel/CopyImage
122 cmp -s $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).debug || { \
123 $(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)$(1); \
124 $(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).elf; \
125 $(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).debug; \
126 $(foreach k, \
127 $(if $(KERNEL_IMAGES),$(KERNEL_IMAGES),$(filter-out vmlinux dtbs,$(KERNELNAME))), \
128 $(CP) $(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/$(IMAGES_DIR)/$(k) $(KERNEL_BUILD_DIR)/$(k)$(1); \
129 ) \
130 }
131 endef
132
133 define Kernel/CompileImage/Default
134 rm -f $(TARGET_DIR)/init
135 +$(KERNEL_MAKE) $(if $(KERNELNAME),$(KERNELNAME),all) modules
136 $(call Kernel/CopyImage)
137 endef
138
139 ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
140 define Kernel/CompileImage/Initramfs
141 $(call Kernel/Configure/Initramfs)
142 $(CP) $(GENERIC_PLATFORM_DIR)/other-files/init $(TARGET_DIR)/init
143 rm -rf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/usr/initramfs_data.cpio*
144 +$(KERNEL_MAKE) $(if $(KERNELNAME),$(KERNELNAME),all) modules
145 $(call Kernel/CopyImage,-initramfs)
146 endef
147 else
148 define Kernel/CompileImage/Initramfs
149 endef
150 endif
151
152 define Kernel/Clean/Default
153 rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
154 rm -f $(LINUX_KERNEL)
155 $(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
156 endef
157
158