| 1 | # |
| 2 | # Copyright (C) 2006-2007 OpenWrt.org |
| 3 | # |
| 4 | # This is free software, licensed under the GNU General Public License v2. |
| 5 | # See /LICENSE for more information. |
| 6 | # |
| 7 | include $(INCLUDE_DIR)/host.mk |
| 8 | include $(INCLUDE_DIR)/prereq.mk |
| 9 | |
| 10 | ifneq ($(DUMP),1) |
| 11 | all: compile |
| 12 | endif |
| 13 | |
| 14 | export QUILT=1 |
| 15 | STAMP_PREPARED:=$(LINUX_DIR)/.prepared |
| 16 | STAMP_CONFIGURED:=$(LINUX_DIR)/.configured |
| 17 | include $(INCLUDE_DIR)/download.mk |
| 18 | include $(INCLUDE_DIR)/quilt.mk |
| 19 | include $(INCLUDE_DIR)/kernel-defaults.mk |
| 20 | |
| 21 | define Kernel/Prepare |
| 22 | $(call Kernel/Prepare/Default) |
| 23 | endef |
| 24 | |
| 25 | define Kernel/Configure |
| 26 | $(call Kernel/Configure/Default) |
| 27 | endef |
| 28 | |
| 29 | define Kernel/CompileModules |
| 30 | $(call Kernel/CompileModules/Default) |
| 31 | endef |
| 32 | |
| 33 | define Kernel/CompileImage |
| 34 | $(call Kernel/CompileImage/Default) |
| 35 | endef |
| 36 | |
| 37 | define Kernel/Clean |
| 38 | $(call Kernel/Clean/Default) |
| 39 | endef |
| 40 | |
| 41 | define Download/kernel |
| 42 | URL:=$(LINUX_SITE) |
| 43 | FILE:=$(LINUX_SOURCE) |
| 44 | MD5SUM:=$(LINUX_KERNEL_MD5SUM) |
| 45 | endef |
| 46 | |
| 47 | ifdef CONFIG_COLLECT_KERNEL_DEBUG |
| 48 | define Kernel/CollectDebug |
| 49 | rm -rf $(KERNEL_BUILD_DIR)/debug |
| 50 | mkdir -p $(KERNEL_BUILD_DIR)/debug/modules |
| 51 | $(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/debug/ |
| 52 | -$(CP) \ |
| 53 | $(STAGING_DIR_ROOT)/lib/modules/$(LINUX_VERSION)/* \ |
| 54 | $(KERNEL_BUILD_DIR)/debug/modules/ |
| 55 | $(FIND) $(KERNEL_BUILD_DIR)/debug -type f | $(XARGS) $(KERNEL_CROSS)strip --only-keep-debug |
| 56 | $(TAR) c -C $(KERNEL_BUILD_DIR) debug | bzip2 -c -9 > $(BIN_DIR)/kernel-debug.tar.bz2 |
| 57 | endef |
| 58 | endif |
| 59 | |
| 60 | define BuildKernel |
| 61 | $(if $(QUILT),$(Build/Quilt)) |
| 62 | $(if $(LINUX_SITE),$(call Download,kernel)) |
| 63 | |
| 64 | $(STAMP_PREPARED): $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE)) |
| 65 | -rm -rf $(KERNEL_BUILD_DIR) |
| 66 | -mkdir -p $(KERNEL_BUILD_DIR) |
| 67 | $(Kernel/Prepare) |
| 68 | touch $$@ |
| 69 | |
| 70 | $(KERNEL_BUILD_DIR)/symtab.txt: FORCE |
| 71 | find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \ |
| 72 | xargs $(TARGET_CROSS)nm | \ |
| 73 | awk '$$$$1 == "U" { print $$$$2 } ' | \ |
| 74 | sort -u > $$@ |
| 75 | |
| 76 | $(KERNEL_BUILD_DIR)/symtab.h: $(KERNEL_BUILD_DIR)/symtab.txt |
| 77 | ( \ |
| 78 | echo '#define SYMTAB_KEEP \'; \ |
| 79 | cat $(KERNEL_BUILD_DIR)/symtab.txt | \ |
| 80 | awk '{print "*(__ksymtab." $$$$1 ") \\" }'; \ |
| 81 | echo; \ |
| 82 | echo '#define SYMTAB_KEEP_GPL \'; \ |
| 83 | cat $(KERNEL_BUILD_DIR)/symtab.txt | \ |
| 84 | awk '{print "*(__ksymtab_gpl." $$$$1 ") \\" }'; \ |
| 85 | echo; \ |
| 86 | echo '#define SYMTAB_KEEP_STR \'; \ |
| 87 | cat $(KERNEL_BUILD_DIR)/symtab.txt | \ |
| 88 | awk '{print "*(__ksymtab_strings." $$$$1 ") \\" }'; \ |
| 89 | echo; \ |
| 90 | ) > $$@ |
| 91 | |
| 92 | $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config |
| 93 | $(Kernel/Configure) |
| 94 | touch $$@ |
| 95 | |
| 96 | $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE |
| 97 | $(Kernel/CompileModules) |
| 98 | touch $$@ |
| 99 | |
| 100 | $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE |
| 101 | $(Kernel/CompileImage) |
| 102 | $(Kernel/CollectDebug) |
| 103 | touch $$@ |
| 104 | |
| 105 | mostlyclean: FORCE |
| 106 | $(Kernel/Clean) |
| 107 | |
| 108 | define BuildKernel |
| 109 | endef |
| 110 | |
| 111 | download: $(DL_DIR)/$(LINUX_SOURCE) |
| 112 | prepare: $(STAMP_CONFIGURED) |
| 113 | compile: $(LINUX_DIR)/.modules |
| 114 | $(MAKE) -C image compile TARGET_BUILD= |
| 115 | |
| 116 | oldconfig menuconfig nconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE |
| 117 | rm -f $(STAMP_CONFIGURED) |
| 118 | $(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config |
| 119 | $(_SINGLE)$(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $$@ |
| 120 | $(LINUX_RECONF_DIFF) $(LINUX_DIR)/.config > $(LINUX_RECONFIG_TARGET) |
| 121 | |
| 122 | install: $(LINUX_DIR)/.image |
| 123 | +$(MAKE) -C image compile install TARGET_BUILD= |
| 124 | |
| 125 | clean: FORCE |
| 126 | rm -rf $(KERNEL_BUILD_DIR) |
| 127 | |
| 128 | image-prereq: |
| 129 | @+$(NO_TRACE_MAKE) -s -C image prereq TARGET_BUILD= |
| 130 | |
| 131 | prereq: image-prereq |
| 132 | |
| 133 | endef |
| 134 | |
