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-rw-r--r--include/kernel-build.mk144
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