1# 
2# Copyright (C) 2006-2009 OpenWrt.org
3#
4# This is free software, licensed under the GNU General Public License v2.
5# See /LICENSE for more information.
6#
7include $(TOPDIR)/rules.mk
8
9KERNEL_BUILD_DIR := $(BUILD_DIR_TOOLCHAIN)
10BUILD_DIR := $(KERNEL_BUILD_DIR)
11
12override QUILT:=
13override HOST_QUILT:=
14
15include $(INCLUDE_DIR)/kernel.mk
16
17PKG_NAME:=linux
18PKG_VERSION:=$(LINUX_VERSION)
19PKG_SOURCE:=$(LINUX_SOURCE)
20PKG_SOURCE_URL:=$(LINUX_SITE)
21HOST_BUILD_DIR:=$(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
22PKG_MD5SUM:=$(LINUX_KERNEL_MD5SUM)
23LINUX_DIR := $(HOST_BUILD_DIR)
24FILES_DIR := 
25PATCH_DIR := ./patches$(if $(wildcard ./patches-$(LINUX_VERSION)),-$(LINUX_VERSION))
26
27include $(INCLUDE_DIR)/toolchain-build.mk
28include $(INCLUDE_DIR)/kernel-defaults.mk
29
30ifeq ($(strip $(BOARD)),uml)
31  LINUX_KARCH:=$(subst x86_64,x86,$(subst i386,x86,$(ARCH)))
32endif
33
34HOST_EXTRACFLAGS=
35
36LINUX_HAS_HEADERS_INSTALL:=y
37
38KMAKE := $(MAKE) -C $(HOST_BUILD_DIR) \
39	HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
40	ARCH=$(LINUX_KARCH) \
41	CC="$(KERNEL_CC)" \
42	CFLAGS="$(TARGET_CFLAGS)" \
43	CROSS_COMPILE=$(TARGET_CROSS) \
44	KBUILD_HAVE_NLS=no \
45	CONFIG_SHELL=$(BASH)
46
47define Host/Configure/all
48	mkdir -p $(BUILD_DIR_TOOLCHAIN)/linux-dev
49	$(KMAKE) \
50		INSTALL_HDR_PATH="$(BUILD_DIR_TOOLCHAIN)/linux-dev/" \
51		headers_install
52endef
53
54# XXX: the following is needed to build lzma-loader
55ifneq ($(CONFIG_mips)$(CONFIG_mipsel),)
56  define Host/Configure/lzma
57	$(CP) \
58		$(HOST_BUILD_DIR)/arch/mips/include/asm/asm.h \
59		$(HOST_BUILD_DIR)/arch/mips/include/asm/regdef.h \
60		$(HOST_BUILD_DIR)/arch/mips/include/asm/asm-eva.h \
61		$(BUILD_DIR_TOOLCHAIN)/linux-dev/include/asm/
62  endef
63endif
64
65define Host/Configure/post/mips
66	$(call Host/Configure/lzma)
67endef
68
69define Host/Configure/post/mipsel
70	$(call Host/Configure/lzma)
71endef
72
73define Host/Prepare
74	$(call Kernel/Prepare/Default)
75	ln -sf linux-$(LINUX_VERSION) $(BUILD_DIR_TOOLCHAIN)/linux
76	$(SED) 's/@expr length/@-expr length/' $(HOST_BUILD_DIR)/Makefile
77endef
78
79define Host/Configure
80	env
81	yes '' | $(KMAKE) oldconfig
82	$(call Host/Configure/all)
83	$(call Host/Configure/post/$(ARCH))
84endef
85
86define Host/Compile
87endef
88
89define Host/Install
90	$(CP) $(BUILD_DIR_TOOLCHAIN)/linux-dev/* $(TOOLCHAIN_DIR)/
91endef
92
93define Host/Clean
94	rm -rf \
95		$(HOST_BUILD_DIR) \
96		$(BUILD_DIR_TOOLCHAIN)/linux \
97		$(BUILD_DIR_TOOLCHAIN)/linux-dev
98endef
99
100$(eval $(call HostBuild))
101