This patch makes kernel modules check if config is defined and creates a config
[openwrt-10.03/.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   ifeq ($(KERNEL),2.6)
20     LINUX_KMOD_SUFFIX=ko
21   else
22     LINUX_KMOD_SUFFIX=o
23   endif
24
25   ifneq (,$(findstring uml,$(BOARD)))
26     KERNEL_CC?=$(HOSTCC)
27     KERNEL_CROSS?=
28   else
29     KERNEL_CC?=$(TARGET_CC)
30     KERNEL_CROSS?=$(TARGET_CROSS)
31   endif
32
33   PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
34   FILES_DIR ?= ./files$(shell [ -d "./files-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
35   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
36   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
37
38   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
39   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
40
41   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
42
43   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
44   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
45   LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING) \
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 (,$(LINUX_KARCH))
56     LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
57           -e 's/mipsel/mips/' \
58           -e 's/mipseb/mips/' \
59           -e 's/sh[234]/sh/' \
60           -e 's/armeb/arm/' \
61     )
62   endif
63 endif
64
65
66 define KernelPackage/Defaults
67   FILES:=
68   AUTOLOAD:=
69 endef
70
71 define ModuleAutoLoad
72         export modules=; \
73         add_module() { \
74                 mkdir -p $(2)/etc/modules.d; \
75                 ( \
76                         for mod in $$$$$$$$2; do \
77                                 getvar mod; \
78                         done \
79                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
80                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
81         }; \
82         $(3) \
83         if [ -n "$$$$$$$$modules" ]; then \
84                 mkdir -p $(2)/etc/modules.d; \
85                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
86                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
87                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
88                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
89                 chmod 0755 $(2)/CONTROL/postinst; \
90         fi
91 endef
92
93 ifeq ($(DUMP)$(TARGET_BUILD),)
94   -include $(LINUX_DIR)/.config
95 endif
96
97 define KernelPackage
98   NAME:=$(1)
99   $(eval $(call Package/Default))
100   $(eval $(call KernelPackage/Defaults))
101   $(eval $(call KernelPackage/$(1)))
102   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
103   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
104
105   define Package/kmod-$(1)
106     TITLE:=$(TITLE)
107     SECTION:=kernel
108     CATEGORY:=Kernel modules
109     DESCRIPTION:=$(DESCRIPTION)
110     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
111     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
112     $(call KernelPackage/$(1))
113     $(call KernelPackage/$(1)/$(KERNEL))
114     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
115   endef
116
117   ifdef KernelPackage/$(1)/description
118     define Package/kmod-$(1)/description
119 $(call KernelPackage/$(1)/description)
120     endef
121   endif
122
123   ifdef KernelPackage/$(1)/config
124     define Package/kmod-$(1)/config
125 $(call KernelPackage/$(1)/config)
126     endef
127   endif
128
129   ifneq ($(if $(KCONFIG),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
130     ifneq ($(strip $(FILES)),)
131       define Package/kmod-$(1)/install
132                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
133                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
134                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
135                   $(call KernelPackage/$(1)/install,$$(1))
136       endef
137     endif
138   $(if $(CONFIG_PACKAGE_kmod-$(1)),
139     else
140       compile: kmod-$(1)-unavailable
141       kmod-$(1)-unavailable:
142                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
143   )
144   endif
145   $$(eval $$(call BuildPackage,kmod-$(1)))
146
147   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
148 endef
149
150 define AutoLoad
151   add_module $(1) "$(2)";
152 endef
153
154 define CompareKernelPatchVer
155   $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
156 endef
157