1 files changed, 144 insertions, 0 deletions
diff --git a/include/kernel-build.mk b/include/kernel-build.mk
new file mode 100644
index 0000000..9abfd54
--- /dev/null
+++ b/include/kernel-build.mk
@@ -0,0 +1,144 @@
+#
+# Copyright (C) 2006-2007 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(INCLUDE_DIR)/host.mk
+include $(INCLUDE_DIR)/prereq.mk
+
+ifneq ($(DUMP),1)
+  all: compile
+endif
+
+export QUILT=1
+STAMP_PREPARED:=$(LINUX_DIR)/.prepared
+STAMP_CONFIGURED:=$(LINUX_DIR)/.configured
+include $(INCLUDE_DIR)/download.mk
+include $(INCLUDE_DIR)/quilt.mk
+include $(INCLUDE_DIR)/kernel-defaults.mk
+
+define Kernel/Prepare
+	$(call Kernel/Prepare/Default)
+endef
+
+define Kernel/Configure
+	$(call Kernel/Configure/Default)
+endef
+
+define Kernel/CompileModules
+	$(call Kernel/CompileModules/Default)
+endef
+
+define Kernel/CompileImage
+	$(call Kernel/CompileImage/Default)
+	$(call Kernel/CompileImage/Initramfs)
+endef
+
+define Kernel/Clean
+	$(call Kernel/Clean/Default)
+endef
+
+define Download/kernel
+  URL:=$(LINUX_SITE)
+  FILE:=$(LINUX_SOURCE)
+  MD5SUM:=$(LINUX_KERNEL_MD5SUM)
+endef
+
+ifdef CONFIG_COLLECT_KERNEL_DEBUG
+  define Kernel/CollectDebug
+	rm -rf $(KERNEL_BUILD_DIR)/debug
+	mkdir -p $(KERNEL_BUILD_DIR)/debug/modules
+	$(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/debug/
+	-$(CP) \
+		$(STAGING_DIR_ROOT)/lib/modules/$(LINUX_VERSION)/* \
+		$(KERNEL_BUILD_DIR)/debug/modules/
+	$(FIND) $(KERNEL_BUILD_DIR)/debug -type f | $(XARGS) $(KERNEL_CROSS)strip --only-keep-debug
+	$(TAR) c -C $(KERNEL_BUILD_DIR) debug | bzip2 -c -9 > $(BIN_DIR)/kernel-debug.tar.bz2
+  endef
+endif
+
+define BuildKernel
+  $(if $(QUILT),$(Build/Quilt))
+  $(if $(LINUX_SITE),$(call Download,kernel))
+
+  .NOTPARALLEL:
+
+  $(STAMP_PREPARED): $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
+	-rm -rf $(KERNEL_BUILD_DIR)
+	-mkdir -p $(KERNEL_BUILD_DIR)
+	$(Kernel/Prepare)
+	touch $$@
+
+  $(KERNEL_BUILD_DIR)/symtab.h: FORCE
+	rm -f $(KERNEL_BUILD_DIR)/symtab.h
+	touch $(KERNEL_BUILD_DIR)/symtab.h
+	+$(MAKE) $(KERNEL_MAKEOPTS) vmlinux
+	find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \
+		xargs $(TARGET_CROSS)nm | \
+		awk '$$$$1 == "U" { print $$$$2 } ' | \
+		sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt
+	$(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep ' [rR] __ksymtab' | sed -e 's,........ [rR] __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt
+	grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt
+	grep -Fvf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt
+	( \
+		echo '#define SYMTAB_KEEP \'; \
+		cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
+			awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \
+		echo; \
+		echo '#define SYMTAB_KEEP_GPL \'; \
+		cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
+			awk '{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \
+		echo; \
+		echo '#define SYMTAB_DISCARD \'; \
+		cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
+			awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \
+		echo; \
+		echo '#define SYMTAB_DISCARD_GPL \'; \
+		cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
+			awk '{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \
+		echo; \
+	) > $$@
+
+  $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config
+	$(Kernel/Configure)
+	touch $$@
+
+  $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE
+	$(Kernel/CompileModules)
+	touch $$@
+
+  $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE
+	$(Kernel/CompileImage)
+	$(Kernel/CollectDebug)
+	touch $$@
+	
+  mostlyclean: FORCE
+	$(Kernel/Clean)
+
+  define BuildKernel
+  endef
+
+  download: $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
+  prepare: $(STAMP_CONFIGURED)
+  compile: $(LINUX_DIR)/.modules
+	$(MAKE) -C image compile TARGET_BUILD=
+
+  oldconfig menuconfig nconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE
+	rm -f $(STAMP_CONFIGURED)
+	$(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config
+	$(_SINGLE)$(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $$@
+	$(LINUX_RECONF_DIFF) $(LINUX_DIR)/.config > $(LINUX_RECONFIG_TARGET)
+
+  install: $(LINUX_DIR)/.image
+	+$(MAKE) -C image compile install TARGET_BUILD=
+
+  clean: FORCE
+	rm -rf $(KERNEL_BUILD_DIR)
+
+  image-prereq:
+	@+$(NO_TRACE_MAKE) -s -C image prereq TARGET_BUILD=
+
+  prereq: image-prereq
+
+endef