[RFC PATCH 06/35] Add vmlinuz build target.

[Chris Wright <chrisw@sous-sol.org>]

The vmlinuz image is a stripped and compressed kernel image, it is
smaller than the vmlinux image and the Xen domain builder supports
loading compressed images directly.

Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 arch/i386/Makefile      |    5 +++--
 arch/i386/boot/Makefile |   10 +++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

--- linus-2.6.orig/arch/i386/Makefile
+++ linus-2.6/arch/i386/Makefile
@@ -108,15 +108,16 @@ CPPFLAGS += $(mflags-y)
 boot := arch/i386/boot
 
 PHONY += zImage bzImage compressed zlilo bzlilo \
-         zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
+         zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install vmlinuz
 
 all: bzImage
 
 # KBUILD_IMAGE specify target image being built
                     KBUILD_IMAGE := $(boot)/bzImage
 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
+vmlinuz:            KBUILD_IMAGE := $(boot)/vmlinuz
 
-zImage bzImage: vmlinux
+zImage bzImage vmlinuz: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 
 compressed: zImage
--- linus-2.6.orig/arch/i386/boot/Makefile
+++ linus-2.6/arch/i386/boot/Makefile
@@ -26,7 +26,7 @@ SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
 #RAMDISK := -DRAMDISK=512
 
 targets		:= vmlinux.bin bootsect bootsect.o \
-		   setup setup.o zImage bzImage
+		   setup setup.o zImage bzImage vmlinuz
 subdir- 	:= compressed
 
 hostprogs-y	:= tools/build
@@ -128,5 +128,13 @@ zlilo: $(BOOTIMAGE)
 	cp System.map $(INSTALL_PATH)/
 	if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
 
+$(obj)/vmlinuz: $(obj)/vmlinux-stripped FORCE
+	$(call if_changed,gzip)
+	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+
+$(obj)/vmlinux-stripped: OBJCOPYFLAGS := -g --strip-unneeded
+$(obj)/vmlinux-stripped: vmlinux FORCE
+	$(call if_changed,objcopy)
+
 install:
 	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"

--
-
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