build: use busybox gzip compatible force option
[openwrt/staging/chunkeey.git] / include / kernel.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 ifneq ($(filter check,$(MAKECMDGOALS)),)
9 CHECK:=1
10 DUMP:=1
11 endif
12
13 ifneq ($(SOURCE_DATE_EPOCH),)
14 ifndef DUMP
15 KBUILD_BUILD_TIMESTAMP:=$(shell perl -e 'print scalar gmtime($(SOURCE_DATE_EPOCH))')
16 endif
17 endif
18
19 ifeq ($(__target_inc),)
20 ifndef CHECK
21 include $(INCLUDE_DIR)/target.mk
22 endif
23 endif
24
25 ifeq ($(DUMP),1)
26 KERNEL?=<KERNEL>
27 BOARD?=<BOARD>
28 LINUX_VERSION?=<LINUX_VERSION>
29 LINUX_VERMAGIC?=<LINUX_VERMAGIC>
30 else
31 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
32 export GCC_HONOUR_COPTS=s
33 endif
34
35 LINUX_KMOD_SUFFIX=ko
36
37 ifneq (,$(findstring uml,$(BOARD)))
38 KERNEL_CC?=$(HOSTCC)
39 KERNEL_CROSS?=
40 else
41 KERNEL_CC?=$(TARGET_CC)
42 KERNEL_CROSS?=$(TARGET_CROSS)
43 endif
44
45 ifeq ($(TARGET_BUILD),1)
46 PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
47 FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)")
48 endif
49 KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
50 LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
51 LINUX_UAPI_DIR=uapi/
52 LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
53 LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
54
55 LINUX_UNAME_VERSION:=$(KERNEL_BASE)
56 ifneq ($(findstring -rc,$(LINUX_VERSION)),)
57 LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
58 endif
59
60 LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
61
62 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
63 TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
64 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
65 LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x$(TESTING)
66 else
67 LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release 2>/dev/null))
68 endif
69
70 MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
71 TARGET_MODULES_DIR:=$(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
72
73 ifneq ($(TARGET_BUILD),1)
74 PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
75 endif
76 endif
77
78 ifneq (,$(findstring uml,$(BOARD)))
79 LINUX_KARCH=um
80 else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
81 LINUX_KARCH := arm64
82 else ifneq (,$(findstring $(ARCH) , arceb ))
83 LINUX_KARCH := arc
84 else ifneq (,$(findstring $(ARCH) , armeb ))
85 LINUX_KARCH := arm
86 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
87 LINUX_KARCH := mips
88 else ifneq (,$(findstring $(ARCH) , powerpc64 ))
89 LINUX_KARCH := powerpc
90 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
91 LINUX_KARCH := sh
92 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
93 LINUX_KARCH := x86
94 else
95 LINUX_KARCH := $(ARCH)
96 endif
97
98 KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS)
99
100 KERNEL_MAKE_FLAGS := \
101 HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
102 CROSS_COMPILE="$(KERNEL_CROSS)" \
103 ARCH="$(LINUX_KARCH)" \
104 KBUILD_HAVE_NLS=no \
105 KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
106 KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
107 KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \
108 KBUILD_BUILD_VERSION="0" \
109 HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
110 CONFIG_SHELL="$(BASH)" \
111 $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
112 $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) \
113 cmd_syscalls=
114
115 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
116 KERNEL_MAKE_FLAGS += \
117 KERNELRELEASE=$(LINUX_VERSION)
118 endif
119
120 KERNEL_MAKEOPTS := -C $(LINUX_DIR) $(KERNEL_MAKE_FLAGS)
121
122 ifdef CONFIG_USE_SPARSE
123 KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
124 endif
125
126 PKG_EXTMOD_SUBDIRS ?= .
127
128 define populate_module_symvers
129 @mkdir -p $(PKG_INFO_DIR)
130 cat /dev/null > $(PKG_INFO_DIR)/$(PKG_NAME).symvers; \
131 for subdir in $(PKG_EXTMOD_SUBDIRS); do \
132 cat $(PKG_INFO_DIR)/*.symvers 2>/dev/null > $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers; \
133 done
134 endef
135
136 define collect_module_symvers
137 for subdir in $(PKG_EXTMOD_SUBDIRS); do \
138 grep -F $$$$(readlink -f $(PKG_BUILD_DIR)) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \
139 done; \
140 sort -u $(PKG_BUILD_DIR)/Module.symvers.tmp > $(PKG_BUILD_DIR)/Module.symvers; \
141 mv $(PKG_BUILD_DIR)/Module.symvers $(PKG_INFO_DIR)/$(PKG_NAME).symvers
142 endef
143
144 define KernelPackage/hooks
145 ifneq ($(PKG_NAME),kernel)
146 Hooks/Compile/Pre += populate_module_symvers
147 Hooks/Compile/Post += collect_module_symvers
148 endif
149 define KernelPackage/hooks
150 endef
151 endef
152
153 define KernelPackage/Defaults
154 FILES:=
155 AUTOLOAD:=
156 MODPARAMS:=
157 PKGFLAGS+=nonshared
158 endef
159
160 # 1: name
161 # 2: install prefix
162 # 3: module priority prefix
163 # 4: required for boot
164 # 5: module list
165 define ModuleAutoLoad
166 $(if $(5), \
167 mkdir -p $(2)/etc/modules.d; \
168 ($(foreach mod,$(5), \
169 echo "$(mod)$(if $(MODPARAMS.$(mod)), $(MODPARAMS.$(mod)),$(if $(MODPARAMS), $(MODPARAMS)))"; )) > $(2)/etc/modules.d/$(3)$(1); \
170 $(if $(4), \
171 mkdir -p $(2)/etc/modules-boot.d; \
172 ln -sf ../modules.d/$(3)$(1) $(2)/etc/modules-boot.d/;))
173 endef
174
175 ifeq ($(DUMP)$(TARGET_BUILD),)
176 -include $(LINUX_DIR)/.config
177 endif
178
179 define KernelPackage/depends
180 $(STAMP_BUILT): $(LINUX_DIR)/.config
181 define KernelPackage/depends
182 endef
183 endef
184
185 define KernelPackage
186 NAME:=$(1)
187 $(eval $(call Package/Default))
188 $(eval $(call KernelPackage/Defaults))
189 $(eval $(call KernelPackage/$(1)))
190 $(eval $(call KernelPackage/$(1)/$(BOARD)))
191 $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
192
193 define Package/kmod-$(1)
194 TITLE:=$(TITLE)
195 SECTION:=kernel
196 CATEGORY:=Kernel modules
197 DESCRIPTION:=$(DESCRIPTION)
198 EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
199 VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
200 PKGFLAGS:=$(PKGFLAGS)
201 $(call KernelPackage/$(1))
202 $(call KernelPackage/$(1)/$(BOARD))
203 $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
204 endef
205
206 ifdef KernelPackage/$(1)/conffiles
207 define Package/kmod-$(1)/conffiles
208 $(call KernelPackage/$(1)/conffiles)
209 endef
210 endif
211
212 ifdef KernelPackage/$(1)/description
213 define Package/kmod-$(1)/description
214 $(call KernelPackage/$(1)/description)
215 endef
216 endif
217
218 ifdef KernelPackage/$(1)/config
219 define Package/kmod-$(1)/config
220 $(call KernelPackage/$(1)/config)
221 endef
222 endif
223
224 $(call KernelPackage/depends)
225 $(call KernelPackage/hooks)
226
227 ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
228 define Package/kmod-$(1)/install
229 @for mod in $$(call version_filter,$$(FILES)); do \
230 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
231 echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
232 elif [ -e $$$$$$$$mod ]; then \
233 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
234 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
235 else \
236 echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
237 exit 1; \
238 fi; \
239 done;
240 $(call ModuleAutoLoad,$(1),$$(1),$(filter-out 0-,$(word 1,$(AUTOLOAD))-),$(filter-out 0,$(word 2,$(AUTOLOAD))),$(wordlist 3,99,$(AUTOLOAD)))
241 $(call KernelPackage/$(1)/install,$$(1))
242 endef
243 $(if $(CONFIG_PACKAGE_kmod-$(1)),
244 else
245 compile: $(1)-disabled
246 $(1)-disabled:
247 @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
248
249 define Package/kmod-$(1)/install
250 true
251 endef
252 )
253 endif
254 $$(eval $$(call BuildPackage,kmod-$(1)))
255
256 $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
257 endef
258
259 version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
260
261 # 1: priority (optional)
262 # 2: module list
263 # 3: boot flag
264 define AutoLoad
265 $(if $(1),$(1),0) $(if $(3),1,0) $(call version_filter,$(2))
266 endef
267
268 # 1: module list
269 # 2: boot flag
270 define AutoProbe
271 $(call AutoLoad,,$(1),$(2))
272 endef
273
274 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
275 kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) ))
276
277 ifdef DUMP
278 kernel_version_cmp=
279 else
280 kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
281 endif
282
283 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
284
285 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
286 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
287 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
288 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
289 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
290