Skip to contentSkip to conversation

ARM Makefile cleanup

PATCH-RFC Sam Ravnborg 2 participants 2 messages Nov 2, 2002 – Nov 4, 2002 Arm (32-bit)

lore
Share & tools
lore

Sam Ravnborg

author
#0 lore raw

Hi Russell.

This is a cleanup of the ARM makefiles.
They looked pretty OK before, but I have updated then to use the new make clean infrastructure, and deleted inclusion of Rules.make when I touched a file that included that file.
I also converted a lot of ifeq (...) to use the more space saving xxx-$() approach.

I never managed to find a config that was compileable on i386, so this is unfortunately untested.
I have looked through the diff a couple of times and expect it to be mostly OK.

Diffstat output:

 Makefile                 |  164 +++++++++++++++--------------------------------
 boot/Makefile            |  146 ++++++++++++-----------------------------
 boot/bootp/Makefile      |    4 -
 boot/compressed/Makefile |    9 --
 4 files changed, 100 insertions(+), 223 deletions(-)

As you can see I deleted more than I added.
Let me know if this is troublesome.

Sam

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas:
# ChangeSet 1.872 -> 1.873
# arch/arm/boot/Makefile 1.17 -> 1.18
# arch/arm/boot/compressed/Makefile 1.11 -> 1.12
# arch/arm/Makefile 1.27 -> 1.28
# arch/arm/boot/bootp/Makefile 1.6 -> 1.7
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/11/02 [email protected] 1.873
# [ARM] Makefile tidy-up

# o Use new make clean infrastructure
# o More compact assignments
# o Avoid inclusion of Rules.make
# --------------------------------------------
#
diff -Nru a/arch/arm/Makefile b/arch/arm/Makefile
--- a/arch/arm/Makefile	Sat Nov  2 23:50:48 2002
+++ b/arch/arm/Makefile	Sat Nov  2 23:50:48 2002
@@ -33,14 +33,12 @@
 # Note that GCC is lame - it doesn't numerically define an
 # architecture version macro, but instead defines a whole
 # series of macros.
-arch-y				:=
 arch-$(CONFIG_CPU_32v3)		:=-D__LINUX_ARM_ARCH__=3 -march=armv3
 arch-$(CONFIG_CPU_32v4)		:=-D__LINUX_ARM_ARCH__=4 -march=armv4
 arch-$(CONFIG_CPU_32v5)		:=-D__LINUX_ARM_ARCH__=5 -march=armv5
 arch-$(CONFIG_CPU_XSCALE)	:=-D__LINUX_ARM_ARCH__=5 -march=armv4 -Wa,-mxscale #-march=armv5te

# This selects how we optimise for the processor.
-tune-y :=
tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610
tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
@@ -57,121 +55,67 @@
CFLAGS +=$(apcs-y) $(arch-y) $(tune-y) -mshort-load-bytes -msoft-float -Wa,-mno-fpu
AFLAGS +=$(apcs-y) $(arch-y) -mno-fpu -msoft-float -Wa,-mno-fpu

+
+# Default value
+DATAADDR := .
+
+
ifeq ($(CONFIG_CPU_26),y)
PROCESSOR := armo
HEAD := arch/arm/mach-arc/head.o arch/arm/kernel/init_task.o
ifeq ($(CONFIG_ROM_KERNEL),y)

     DATAADDR	 = 0x02080000

- TEXTADDR = 0x03800000
+ textaddr-y := 0x03800000
else
- TEXTADDR = 0x02080000
+ textaddr-y := 0x02080000
endif
endif

ifeq ($(CONFIG_CPU_32),y)
PROCESSOR = armv
HEAD := arch/arm/kernel/head.o arch/arm/kernel/init_task.o
-TEXTADDR = 0xC0008000
-endif
-
-ifeq ($(CONFIG_ARCH_ARCA5K),y)
-MACHINE = arc
-endif
-
-ifeq ($(CONFIG_ARCH_RPC),y)
-MACHINE = rpc
-endif
-
-ifeq ($(CONFIG_ARCH_EBSA110),y)
-MACHINE = ebsa110
-endif
-
-ifeq ($(CONFIG_ARCH_CLPS7500),y)
-MACHINE = clps7500
-INCDIR = cl7500
-endif
-
-ifeq ($(CONFIG_FOOTBRIDGE),y)
-MACHINE = footbridge
-INCDIR = ebsa285
-endif
-
-ifeq ($(CONFIG_ARCH_CO285),y)
-TEXTADDR = 0x60008000
-MACHINE = footbridge
-INCDIR = ebsa285
-endif
-
-ifeq ($(CONFIG_ARCH_FTVPCI),y)
-MACHINE = ftvpci
-INCDIR = nexuspci
-endif
-
-ifeq ($(CONFIG_ARCH_TBOX),y)
-MACHINE = tbox
-endif
-
-ifeq ($(CONFIG_ARCH_SHARK),y)
-MACHINE = shark
+textaddr-y := 0xC0008000
endif

+ machine-$(CONFIG_ARCH_ARCA5K) := arc
+ machine-$(CONFIG_ARCH_RPC) := rpc

+ machine-$(CONFIG_ARCH_EBSA110)	   := ebsa110
+ machine-$(CONFIG_ARCH_CLPS7500)   := clps7500
+  incdir-$(CONFIG_ARCH_CLPS7500)   := cl7500
+ machine-$(CONFIG_FOOTBRIDGE)	   := footbridge
+  incdir-$(CONFIG_FOOTBRIDGE)	   := ebsa285
+textaddr-$(CONFIG_ARCH_CO285)	   := 0x60008000
+ machine-$(CONFIG_ARCH_CO285)	   := footbridge
+  incdir-$(CONFIG_ARCH_CO285)	   := ebsa285

+ machine-$(CONFIG_ARCH_FTVPCI) := ftvpci
+ incdir-$(CONFIG_ARCH_FTVPCI) := nexuspci
+ machine-$(CONFIG_ARCH_TBOX) := tbox
+ machine-$(CONFIG_ARCH_SHARK) := shark
+ machine-$(CONFIG_ARCH_SA1100) := sa1100
ifeq ($(CONFIG_ARCH_SA1100),y)
-ifeq ($(CONFIG_SA1111),y)
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
-TEXTADDR = 0xc0208000
-endif
-MACHINE = sa1100
+textaddr-$(CONFIG_SA1111) := 0xc0208000
endif
-
-ifeq ($(CONFIG_ARCH_PXA),y)
-MACHINE = pxa
-endif
-
-ifeq ($(CONFIG_ARCH_L7200),y)
-MACHINE = l7200
-endif
-
-ifeq ($(CONFIG_ARCH_INTEGRATOR),y)
-MACHINE = integrator
-endif
-
-ifeq ($(CONFIG_ARCH_CAMELOT),y)
-MACHINE = epxa10db
-endif
-
-ifeq ($(CONFIG_ARCH_CLPS711X),y)
-TEXTADDR = 0xc0028000
-MACHINE = clps711x
-endif
-
-ifeq ($(CONFIG_ARCH_FORTUNET),y)
-TEXTADDR = 0xc0008000
-endif
-
-ifeq ($(CONFIG_ARCH_ANAKIN),y)
-MACHINE = anakin
-endif
-
-ifeq ($(CONFIG_ARCH_IOP310),y)
-MACHINE = iop310
-endif
-
-ifeq ($(CONFIG_ARCH_ADIFCC),y)
-MACHINE = adifcc
+ machine-$(CONFIG_ARCH_PXA) := pxa
+ machine-$(CONFIG_ARCH_L7200) := l7200
+ machine-$(CONFIG_ARCH_INTEGRATOR) := integrator

+ machine-$(CONFIG_ARCH_CAMELOT)	   := epxa10db
+textaddr-$(CONFIG_ARCH_CLPS711X)   := 0xc0028000
+ machine-$(CONFIG_ARCH_CLPS711X)   := clps711x
+textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
+ machine-$(CONFIG_ARCH_ANAKIN)	   := anakin
+ machine-$(CONFIG_ARCH_IOP310)	   := iop310
+ machine-$(CONFIG_ARCH_ADIFCC)	   := adifcc

+
+MACHINE := $(machine-y)
+TEXTADDR := $(textaddr-y)
+ifeq ($(incdir-y),)
+incdir-y := $(MACHINE)
endif
+INCDIR := $(incdir-y)

export MACHINE PROCESSOR TEXTADDR GZFLAGS CFLAGS_BOOT

-# Only set INCDIR if its not already defined above
-# Grr, ?= doesn't work as all the other assignment operators do. Make bug? -ifeq ($(origin INCDIR), undefined)
-INCDIR :=$(MACHINE)
-endif
-
-ifeq ($(origin DATAADDR), undefined)
-DATAADDR := .
-endif
-
# Do we have FASTFPE?
FASTFPE :=arch/arm/fastfpe
ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
@@ -191,7 +135,7 @@

libs-y += arch/arm/lib/

-makeboot = $(call descend,arch/arm/boot,$(1))
+makeboot = $(Q)$(MAKE) -f scripts/Makefile.build obj=arch/arm/boot $(1)

# Update machine arch and proc symlinks if something which affects
# them changed. We use .arch and .proc to indicate when they were
@@ -214,13 +158,13 @@
.PHONY: maketools FORCE
maketools: include/asm-arm/.arch include/asm-arm/.proc \
include/asm-arm/constants.h include/linux/version.h FORCE
- +@$(call descend,arch/arm/tools, include/asm-arm/mach-types.h)
+ $(Q)$(MAKE) -f scripts/Makefile.build obj=arch/arm/tools include/asm-arm/mach-types.h

zImage Image bootpImage: vmlinux
- +@$(call makeboot,arch/arm/boot/$@)
+ $(call makeboot,arch/arm/boot/$@)

bzImage zinstall install: vmlinux
- +@$(call makeboot,$@)
+ $(call makeboot,$@)

MRPROPER_FILES += \
include/asm-arm/arch include/asm-arm/.arch \
@@ -230,15 +174,15 @@

# We use MRPROPER_FILES and CLEAN_FILES now
archmrproper:
-archclean: FORCE
- +@$(call makeboot,clean)
+archclean:
+ $(Q)$(MAKE) -f scripts/Makefile.clean obj=arch/arm/boot

# My testing targets (that short circuit a few dependencies)
-zImg:; +@$(call makeboot, zImage)
-Img:; +@$(call makeboot, Image)
-i:; +@$(call makeboot, install)
-zi:; +@$(call makeboot, zinstall)
-bp:; +@$(call makeboot, bootpImage)
+zImg:; $(call makeboot, zImage)
+Img:; $(call makeboot, Image)
+i:; $(call makeboot, install)
+zi:; $(call makeboot, zinstall)
+bp:; $(call makeboot, bootpImage)

#
# Configuration targets. Use these to select a
@@ -259,9 +203,7 @@
arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
include/config/MARKER

-include/asm-$(ARCH)/constants.h.tmp: arch/$(ARCH)/kernel/asm-offsets.s
- @$(generate-asm-offsets.h) < $< > $@
-
-include/asm-$(ARCH)/constants.h: include/asm-$(ARCH)/constants.h.tmp +include/asm-$(ARCH)/constants.h: arch/$(ARCH)/kernel/asm-offsets.s
@echo -n ' Generating $@'
+ @$(generate-asm-offsets.h) < $< > [email protected]
@$(update-if-changed)

arch/arm/boot/Makefile +45 -101
diff -Nru a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
@@ -13,116 +13,62 @@
 #   PARAMS_PHYS must be with 4MB of ZRELADDR
 #   INITRD_PHYS must be in RAM
 
-ifeq ($(CONFIG_CPU_26),y)
-ZRELADDR	 = 0x02080000
-PARAMS_PHYS	 = 0x0207c000
-INITRD_PHYS	 = 0x02180000
-endif
-
-ifeq ($(CONFIG_ARCH_RPC),y)
-ZRELADDR	 = 0x10008000
-PARAMS_PHYS	 = 0x10000100
-INITRD_PHYS	 = 0x18000000
-endif
-
-ifeq ($(CONFIG_ARCH_CLPS7500),y)
-ZRELADDR	 = 0x10008000
-endif
-
-ifeq ($(CONFIG_ARCH_EBSA110),y)
-ZRELADDR	 = 0x00008000
-PARAMS_PHYS	 = 0x00000400
-INITRD_PHYS	 = 0x00800000
-endif
-
-ifeq ($(CONFIG_ARCH_SHARK),y)
-ZTEXTADDR	 = 0x08508000
-ZRELADDR	 = 0x08008000
-endif
-
-ifeq ($(CONFIG_FOOTBRIDGE),y)
-ZRELADDR	 = 0x00008000
-PARAMS_PHYS	 = 0x00000100
-INITRD_PHYS	 = 0x00800000
-endif
-
-ifeq ($(CONFIG_ARCH_INTEGRATOR),y)
-ZRELADDR	 = 0x00008000
-PARAMS_PHYS	 = 0x00000100
-INITRD_PHYS	 = 0x00800000
-endif
-
-ifeq ($(CONFIG_ARCH_CAMELOT),y)
-ZRELADDR	 = 0x00008000
-endif
-
-ifeq ($(CONFIG_ARCH_NEXUSPCI),y)
-ZRELADDR	 = 0x40008000
-endif
-
-ifeq ($(CONFIG_ARCH_L7200),y)
-ZRELADDR	 = 0xf0008000
-endif
-
+   zreladdr-$(CONFIG_CPU_26)		:= 0x02080000 
+params_phys-$(CONFIG_CPU_26)		:= 0x0207c000
+initrd_phys-$(CONFIG_CPU_26)		:= 0x02180000
+   zreladdr-$(CONFIG_ARCH_RPC)		:= 0x10008000
+params_phys-$(CONFIG_ARCH_RPC)		:= 0x10000100
+initrd_phys-$(CONFIG_ARCH_RPC)		:= 0x18000000
+   zreladdr-$(CONFIG_ARCH_CLPS7500)	:= 0x10008000
+   zreladdr-$(CONFIG_ARCH_CLPS7500)	:= 0x10008000
+   zreladdr-$(CONFIG_ARCH_EBSA110)	:= 0x00008000
+params_phys-$(CONFIG_ARCH_EBSA110)	:= 0x00000400
+initrd_phys-$(CONFIG_ARCH_EBSA110)	:= 0x00800000
+  ztextaddr-$(CONFIG_ARCH_SHARK)	:= 0x08508000
+   zreladdr-$(CONFIG_ARCH_SHARK)	:= 0x08008000
+   zreladdr-$(CONFIG_FOOTBRIDGE)	:= 0x00008000
+params_phys-$(CONFIG_FOOTBRIDGE)	:= 0x00000100
+initrd_phys-$(CONFIG_FOOTBRIDGE)	:= 0x00800000
+   zreladdr-$(CONFIG_ARCH_INTEGRATOR)	:= 0x00008000
+params_phys-$(CONFIG_ARCH_INTEGRATOR)	:= 0x00000100
+initrd_phys-$(CONFIG_ARCH_INTEGRATOR)	:= 0x00800000
+   zreladdr-$(CONFIG_ARCH_CAMELOT)	:= 0x00008000
+   zreladdr-$(CONFIG_ARCH_NEXUSPCI)	:= 0x40008000
+   zreladdr-$(CONFIG_ARCH_L7200)	:= 0xf0008000
 # The standard locations for stuff on CLPS711x type processors
-ifeq ($(CONFIG_ARCH_CLPS711X),y)
-ZRELADDR	 = 0xc0028000
-PARAMS_PHYS	 = 0xc0000100
-endif
-
+   zreladdr-$(CONFIG_ARCH_CLPS711X)	:= 0xc0028000 
+params_phys-$(CONFIG_ARCH_CLPS711X)	:= 0xc0000100
 # Should probably have some agreement on these...
-ifeq ($(CONFIG_ARCH_P720T),y)
-INITRD_PHYS	 = 0xc0400000
-endif
-ifeq ($(CONFIG_ARCH_CDB89712),y)
-INITRD_PHYS	 = 0x00700000
-endif
-
+initrd_phys-$(CONFIG_ARCH_P720T)	:= 0xc0400000
+initrd_phys-$(CONFIG_ARCH_CDB89712)	:= 0x00700000
+   zreladdr-$(CONFIG_ARCH_SA1100)	:= 0xc0008000
 ifeq ($(CONFIG_ARCH_SA1100),y)
-ZRELADDR	 = 0xc0008000
-# No defconfig file to move this into...
-#ifeq ($(CONFIG_SA1100_YOPY),y)
-#  ZTEXTADDR      = 0x00080000
-#  ZBSSADDR       = 0xc0200000
-#endif
-ifeq ($(CONFIG_SA1111),y)
-  ZRELADDR	 = 0xc0208000
-endif
-endif
-
-ifeq ($(CONFIG_ARCH_PXA),y)
-ZRELADDR	 = 0xa0008000
-endif
-
-ifeq ($(CONFIG_ARCH_ANAKIN),y)
-ZRELADDR	 = 0x20008000
-endif
-
-ifeq ($(CONFIG_ARCH_IQ80310),y)
-ZRELADDR	 = 0xa0008000
+   zreladdr-$(CONFIG_SA1111)		:= 0xc0208000
 endif
-
-ifeq ($(CONFIG_ARCH_ADIFCC),y)
-ZRELADDR	 = 0xc0008000
-endif
-
+  zreladdr-$(CONFIG_ARCH_PXA)		:= 0xa0008000
+  zreladdr-$(CONFIG_ARCH_ANAKIN)	:= 0x20008000
+  zreladdr-$(CONFIG_ARCH_IQ80310)	:= 0xa0008000
+  zreladdr-$(CONFIG_ARCH_ADIFCC)	:= 0xc0008000
+
+ZRELADDR    := $(zreladdr-y)
+ZTEXTADDR   := $(ztextaddr-y)
+PARAMS_PHYS := $(params_phys-y)
+INITRD_PHYS := $(initrd_phys-y)
 #
 # We now have a PIC decompressor implementation.  Decompressors running
 # from RAM should not define ZTEXTADDR.  Decompressors running directly
 # from ROM or Flash must define ZTEXTADDR (preferably via the config)
 #
 ifeq ($(CONFIG_ZBOOT_ROM),y)
-ZTEXTADDR	=$(CONFIG_ZBOOT_ROM_TEXT)
-ZBSSADDR	=$(CONFIG_ZBOOT_ROM_BSS)
+ZTEXTADDR	:= $(CONFIG_ZBOOT_ROM_TEXT)
+ZBSSADDR	:= $(CONFIG_ZBOOT_ROM_BSS)
 else
-ZTEXTADDR	=0
-ZBSSADDR	=ALIGN(4)
+ZTEXTADDR	:= 0
+ZBSSADDR	:= ALIGN(4)
 endif
 
 export	ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS PARAMS_PHYS
 
-include $(TOPDIR)/Rules.make
-
 $(obj)/Image: vmlinux FORCE
 	$(call if_changed,objcopy)
 

@@ -135,10 +81,10 @@
 	$(call if_changed,objcopy)
 
 $(obj)/compressed/vmlinux: vmlinux FORCE
-	+@$(call descend,arch/arm/boot/compressed, $(obj)/compressed/vmlinux)
+	$(Q)$(MAKE) -f scripts/Makefile.build obj=$(dir $@) $@
 
 $(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
-	+@$(call descend,arch/arm/boot/bootp, $(obj)/bootp/bootp)
+	$(Q)$(MAKE) -f scripts/Makefile.build obj=$(dir $@) $@
 
 .PHONY: initrd
 initrd:

@@ -157,10 +103,8 @@
 	$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) \
 	$(obj)/zImage System.map "$(INSTALL_PATH)"
 
-clean:
-	$(RM) $(addprefix $(obj)/,Image zImage bootpImage)
-	+@$(call descend,arch/arm/boot/bootp, clean)
-	+@$(call descend,arch/arm/boot/compressed, clean)
+clean-files := $(addprefix $(obj)/,Image zImage bootpImage)
+subdir-	    := bootp/ compressed/
 
 archhelp:
 	@echo  '* bzImage/zImage- Compressed kernel image (arch/$(ARCH)/boot/zImage)'
arch/arm/boot/bootp/Makefile +0 -4
diff -Nru a/arch/arm/boot/bootp/Makefile b/arch/arm/boot/bootp/Makefile
@@ -9,8 +9,6 @@
 
 EXTRA_TARGETS := bootp
 
-include $(TOPDIR)/Rules.make
-
 # Note that bootp.lds picks up kernel.o and initrd.o
 $(obj)/bootp:	$(addprefix $(obj)/,init.o kernel.o initrd.o bootp.lds)
 		$(LD) $(ZLDFLAGS) -o $@ $(obj)/init.o

@@ -22,5 +20,3 @@
 		$(LD) -r -s -o $@ -b binary $(INITRD)
 
 .PHONY:		$(INITRD) $(ZSYSTEM)
-
-clean:;		$(RM) $(obj)/bootp
arch/arm/boot/compressed/Makefile +2 -7
diff -Nru a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
@@ -63,15 +63,12 @@
 OBJS		+= head-xscale.o
 endif
 
-SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/LOAD_ADDR/$(ZRELADDR)/;\
-s/BSS_START/$(ZBSSADDR)/;s#OBJ#$(obj)#
+SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/LOAD_ADDR/$(ZRELADDR)/;s/BSS_START/$(ZBSSADDR)/
 
 EXTRA_TARGETS := vmlinux piggy.o font.o head.o $(OBJS)
 EXTRA_CFLAGS  := $(CFLAGS_BOOT) -fpic
 EXTRA_AFLAGS  := -traditional
 
-include $(TOPDIR)/Rules.make
-
 LDFLAGS_vmlinux := -p -X \
 	$(shell $(CC) $(CFLAGS) --print-libgcc-file-name) -T
 

@@ -93,9 +90,7 @@
 $(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in Makefile arch/arm/boot/Makefile .config
 	@sed "$(SEDFLAGS)" < $< > $@
 
-.PHONY:	clean
-clean:
-	rm -f $(addprefix $(obj)/,vmlinux core piggy* vmlinux.lds)
+clean-files := $(addprefix $(obj)/,vmlinux piggy* vmlinux.lds)
 
 $(obj)/misc.o: $(obj)/misc.c include/asm/arch/uncompress.h lib/inflate.c
#1 lore raw
Quoted 3 lines · Sam Ravnborg

They looked pretty OK before, but I have updated then to use the new make clean infrastructure, and deleted inclusion of Rules.make when I touched a file that included that file.

Unfortunately it breaks:

Generating build number
Generating include/linux/compile.h (updated)
arm-linux-gcc -Wp,-MD,init/.version.o.d -D__KERNEL__ -Iinclude -Wall -Wstrict-prototypes -Wno-trigraphs -Os -mapcs -mno-sched-prolog -fno-strict-aliasing -fno-common -mapcs-32 -D__LINUX_ARM_ARCH__=4 -march=armv4 -mtune=strongarm1100 -mshort-load-bytes -msoft-float -Wa,-mno-fpu -nostdinc -iwithprefix include -DKBUILD_BASENAME=version -c -o init/version.o init/version.c
arm-linux-ld -r -o init/built-in.o init/main.o init/version.o init/do_mounts.o init/initramfs.o
arm-linux-ld -p -X -T arch/arm/vmlinux.lds.s arch/arm/kernel/head.o arch/arm/kernel/init_task.o init/built-in.o --start-group usr/built-in.o arch/arm/mach-sa1100/built-in.o arch/arm/kernel/built-in.o arch/arm/mm/built-in.o arch/arm/nwfpe/built-in.o kernel/built-in.o mm/built-in.o fs/built-in.o ipc/built-in.o security/built-in.o crypto/built-in.o lib/lib.a arch/arm/lib/lib.a drivers/built-in.o sound/built-in.o net/built-in.o --end-group -o vmlinux
make -f scripts/Makefile.build obj=arch/arm/boot arch/arm/boot/zImage
make -f scripts/Makefile.build obj=arch/arm/boot/compressed/ arch/arm/boot/compressed/vmlinux
make[2]: Nothing to be done for `arch/arm/boot/compressed/vmlinux'.
arm-linux-objcopy -O binary -R .note -R .comment -S arch/arm/boot/compressed/vmlinux arch/arm/boot/zImage

I did a make clean without telling make ARCH=arm just prior, so arch/arm/boot/compressed contains some stale files. It looks like there's a missing dependency on the top level vmlinux file:

-rwxrwxr-x    1 rmk      rmk       1822788 Nov  4 15:37 arch/arm/boot/compressed/piggy
-rwxrwxr-x    1 rmk      rmk       2283887 Nov  4 21:18 vmlinux

but oddly, arch/arm/boot/compressed/Makefile contains:

$(obj)/piggy: vmlinux; $(call if_changed,objcopy)

Signature · 2 lines
Russell King ([email protected])                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html