speed up the build system by including include/shell.sh on shell commands only where...
[openwrt.git] / include / kernel.mk
1
2 # Copyright (C) 2006 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 ifeq ($(__target_inc),)
9   include $(INCLUDE_DIR)/target.mk
10 endif
11
12 ifeq ($(DUMP),1)
13   KERNEL?=<KERNEL>
14   BOARD?=<BOARD>
15   LINUX_VERSION?=<LINUX_VERSION>
16 else
17   export GCC_HONOUR_COPTS=s
18
19   LINUX_KMOD_SUFFIX=ko
20
21   ifneq (,$(findstring uml,$(BOARD)))
22     KERNEL_CC?=$(HOSTCC)
23     KERNEL_CROSS?=
24   else
25     KERNEL_CC?=$(TARGET_CC)
26     KERNEL_CROSS?=$(TARGET_CROSS)
27   endif
28
29   ifeq ($(TARGET_BUILD),1)
30     PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
31     FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
32   endif
33   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
34   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
35
36   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
37   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
38
39   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
40
41   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
42   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
43   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE)),)
44     LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
45   endif
46
47   ifneq ($(TARGET_BUILD),1)
48     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
49   endif
50 endif
51
52 ifneq (,$(findstring uml,$(BOARD)))
53   LINUX_KARCH=um
54 else
55   ifeq (,$(LINUX_KARCH))
56     LINUX_KARCH=$(strip $(subst i386,x86,$(subst armeb,arm,$(subst mipsel,mips,$(subst mips64,mips,$(subst mips64el,mips,$(subst sh2,sh,$(subst sh3,sh,$(subst sh4,sh,$(ARCH))))))))))
57   endif
58 endif
59
60
61 define KernelPackage/Defaults
62   FILES:=
63   AUTOLOAD:=
64 endef
65
66 define ModuleAutoLoad
67         $(SH_FUNC) \
68         export modules=; \
69         add_module() { \
70                 mkdir -p $(2)/etc/modules.d; \
71                 ( \
72                         [ "$$$$$$$$3" = "1" ] && { \
73                                 echo '# May be required for rootfs' ; \
74                         } ; \
75                         for mod in $$$$$$$$2; do \
76                                 getvar mod; \
77                         done \
78                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
79                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
80         }; \
81         $(3) \
82         if [ -n "$$$$$$$$modules" ]; then \
83                 mkdir -p $(2)/etc/modules.d; \
84                 mkdir -p $(2)/CONTROL; \
85                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
86                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
87                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
88                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
89                 chmod 0755 $(2)/CONTROL/postinst; \
90         fi
91 endef
92
93 ifeq ($(DUMP)$(TARGET_BUILD),)
94   -include $(LINUX_DIR)/.config
95 endif
96
97 define KernelPackage/depends
98   $(STAMP_BUILT): $(LINUX_DIR)/.config
99   define KernelPackage/depends
100   endef
101 endef
102
103 define KernelPackage
104   NAME:=$(1)
105   $(eval $(call Package/Default))
106   $(eval $(call KernelPackage/Defaults))
107   $(eval $(call KernelPackage/$(1)))
108   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
109   $(eval $(call KernelPackage/$(1)/$(BOARD)))
110
111   define Package/kmod-$(1)
112     TITLE:=$(TITLE)
113     SECTION:=kernel
114     CATEGORY:=Kernel modules
115     DESCRIPTION:=$(DESCRIPTION)
116     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
117     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
118     $(call KernelPackage/$(1))
119     $(call KernelPackage/$(1)/$(KERNEL))
120     $(call KernelPackage/$(1)/$(BOARD))
121   endef
122
123   ifdef KernelPackage/$(1)/description
124     define Package/kmod-$(1)/description
125 $(call KernelPackage/$(1)/description)
126     endef
127   endif
128
129   ifdef KernelPackage/$(1)/config
130     define Package/kmod-$(1)/config
131 $(call KernelPackage/$(1)/config)
132     endef
133   endif
134
135   $(call KernelPackage/depends)
136
137   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
138     ifneq ($(strip $(FILES)),)
139       define Package/kmod-$(1)/install
140                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
141                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
142                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
143                   $(call KernelPackage/$(1)/install,$$(1))
144       endef
145     endif
146   $(if $(CONFIG_PACKAGE_kmod-$(1)),
147     else
148       compile: kmod-$(1)-unavailable
149       kmod-$(1)-unavailable:
150                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
151   )
152   endif
153   $$(eval $$(call BuildPackage,kmod-$(1)))
154
155   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
156 endef
157
158 define AutoLoad
159   add_module $(1) "$(2)" $(3);
160 endef
161
162 ifdef DUMP
163   CompareKernelPatchVer=0
164 else
165   define CompareKernelPatchVer
166     $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
167   endef
168 endif
169