X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=blobdiff_plain;f=include%2Fkernel-defaults.mk;h=ae0255605836add854fdd14a8447aec597588a51;hp=24d26308b129b5202afa6bca61fbd3806ea6d916;hb=b3f7902a0687dced523f49a0430757ac68f6467d;hpb=3ec7ccf50187a402fea21253972796549e256f9f

diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 24d26308b1..ae02556058 100644
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -10,8 +10,11 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
 	CROSS_COMPILE="$(KERNEL_CROSS)" \
 	ARCH="$(LINUX_KARCH)" \
 	KBUILD_HAVE_NLS=no \
+	KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
+	KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
 	CONFIG_SHELL="$(BASH)" \
-	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='')
+	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
+	$(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID))
 
 ifdef CONFIG_STRIP_KERNEL_EXPORTS
   KERNEL_MAKEOPTS += \
@@ -79,6 +82,7 @@ ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
   endif
 
   define Kernel/SetInitramfs
+	rm -f $(LINUX_DIR)/.config.prev
 	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
 	$(call Kernel/SetInitramfs/PreConfigure)
 	echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
@@ -95,9 +99,9 @@ else
 endif
 
 define Kernel/SetNoInitramfs
-	mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
-	grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
-	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
+	mv $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.old
+	grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config.set
+	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config.set
 endef
 
 define Kernel/Configure/Default
@@ -108,11 +112,15 @@ define Kernel/Configure/Default
 	echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target
 	echo "# CONFIG_KALLSYMS_UNCOMPRESSED is not set" >> $(LINUX_DIR)/.config.target
 	$(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config $(KERNEL_PATCHVER) > $(LINUX_DIR)/.config.override
-	$(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
+	$(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config.set
 	$(call Kernel/SetNoInitramfs)
 	rm -rf $(KERNEL_BUILD_DIR)/modules
+	cmp -s $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev || { \
+		cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config; \
+		cp $(LINUX_DIR)/.config.set $(LINUX_DIR)/.config.prev; \
+	}
 	$(_SINGLE) [ -d $(LINUX_DIR)/user_headers ] || $(MAKE) $(KERNEL_MAKEOPTS) INSTALL_HDR_PATH=$(LINUX_DIR)/user_headers headers_install
-	$(SH_FUNC) grep '=[ym]' $(LINUX_DIR)/.config | LC_ALL=C sort | md5s > $(LINUX_DIR)/.vermagic
+	$(SH_FUNC) grep '=[ym]' $(LINUX_DIR)/.config.set | LC_ALL=C sort | md5s > $(LINUX_DIR)/.vermagic
 endef
 
 define Kernel/Configure/Initramfs
@@ -132,13 +140,15 @@ IMAGES_DIR:=../../x86/boot
 endif
 
 define Kernel/CopyImage
-	$(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)$(1)
-	$(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).elf
-	$(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.debug
-	$(foreach k, \
-		$(if $(KERNEL_IMAGES),$(KERNEL_IMAGES),$(filter-out dtbs,$(KERNELNAME))), \
-		$(CP) $(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/$(IMAGES_DIR)/$(k) $(KERNEL_BUILD_DIR)/$(k)$(1); \
-	)
+	cmp -s $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).debug || { \
+		$(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)$(1); \
+		$(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).elf; \
+		$(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux$(1).debug; \
+		$(foreach k, \
+			$(if $(KERNEL_IMAGES),$(KERNEL_IMAGES),$(filter-out dtbs,$(KERNELNAME))), \
+			$(CP) $(LINUX_DIR)/arch/$(LINUX_KARCH)/boot/$(IMAGES_DIR)/$(k) $(KERNEL_BUILD_DIR)/$(k)$(1); \
+		) \
+	}
 endef
 
 define Kernel/CompileImage/Default