Merge mars.ravnborg.org:/home/sam/bk/kbuild-mm2

into mars.ravnborg.org:/home/sam/bk/kbuild

Documentation/kbuild/makefiles.txt

@@ -938,6 +938,37 @@ When kbuild executes the following steps are followed (roughly):
 	will be displayed with "make KBUILD_VERBOSE=0".
 	
 
+--- 6.8 Preprocessing linker scripts
+
+	When the vmlinux image is build the linker script:
+	arch/$(ARCH)/kernel/vmlinux.lds is used.
+	The script is a preprocessed variant of the file vmlinux.lds.S
+	located in the same directory.
+	kbuild knows .lds file and includes a rule *lds.S -> *lds.
+	
+	Example:
+		#arch/i386/kernel/Makefile
+		always := vmlinux.lds
+	
+		#Makefile
+		export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
+		
+	The assigment to $(always) is used to tell kbuild to build the
+	target: vmlinux.lds.
+	The assignment to $(CPPFLAGS_vmlinux.lds) tell kbuild to use the
+	specified options when building the target vmlinux.lds.
+	
+	When building the *.lds target kbuild used the variakles:
+	CPPFLAGS	: Set in top-level Makefile
+	EXTRA_CPPFLAGS	: May be set in the kbuild makefile
+	CPPFLAGS_$(@F)  : Target specific flags.
+	                  Note that the full filename is used in this
+	                  assignment.
+
+	The kbuild infrastructure for *lds file are used in several
+	architecture specific files.
+
+
 === 7 Kbuild Variables
 
 The top Makefile exports the following variables:

Makefile

@@ -545,7 +545,7 @@ endef
 quiet_cmd_sysmap = SYSMAP 
       cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
 		   
-LDFLAGS_vmlinux += -T arch/$(ARCH)/kernel/vmlinux.lds.s
+LDFLAGS_vmlinux += -T arch/$(ARCH)/kernel/vmlinux.lds
 
 #	Generate section listing all symbols and add it into vmlinux
 #	It's a three stage process:
@@ -591,13 +591,13 @@ cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) $(foreach x,$(CONFIG_KALLSYMS_ALL),--al
 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
 	$(call cmd,kallsyms)
 
-.tmp_vmlinux1: $(vmlinux-objs) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
+.tmp_vmlinux1: $(vmlinux-objs) arch/$(ARCH)/kernel/vmlinux.lds FORCE
 	$(call if_changed_rule,vmlinux__)
 
-.tmp_vmlinux2: $(vmlinux-objs) .tmp_kallsyms1.o arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
+.tmp_vmlinux2: $(vmlinux-objs) .tmp_kallsyms1.o arch/$(ARCH)/kernel/vmlinux.lds FORCE
 	$(call if_changed_rule,vmlinux__)
 
-.tmp_vmlinux3: $(vmlinux-objs) .tmp_kallsyms2.o arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
+.tmp_vmlinux3: $(vmlinux-objs) .tmp_kallsyms2.o arch/$(ARCH)/kernel/vmlinux.lds FORCE
 	$(call if_changed_rule,vmlinux__)
 
 endif
@@ -618,13 +618,13 @@ define rule_vmlinux
 	$(rule_verify_kallsyms)
 endef
 
-vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/kernel/vmlinux.lds.s FORCE
+vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/kernel/vmlinux.lds FORCE
 	$(call if_changed_rule,vmlinux)
 
 #	The actual objects are generated when descending, 
 #	make sure no implicit rule kicks in
 
-$(sort $(vmlinux-objs)) arch/$(ARCH)/kernel/vmlinux.lds.s: $(vmlinux-dirs) ;
+$(sort $(vmlinux-objs)) arch/$(ARCH)/kernel/vmlinux.lds: $(vmlinux-dirs) ;
 
 # Handle descending into subdirectories listed in $(vmlinux-dirs)
 # Preset locale variables to speed up the build process. Limit locale
@@ -682,7 +682,7 @@ prepare-all: prepare0 prepare
 #	Leave this as default for preprocessing vmlinux.lds.S, which is now
 #	done in arch/$(ARCH)/kernel/Makefile
 
-export AFLAGS_vmlinux.lds.o += -P -C -U$(ARCH)
+export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
 
 # Single targets
 # ---------------------------------------------------------------------------

arch/alpha/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y		:= head.o vmlinux.lds.s
+extra-y		:= head.o vmlinux.lds
 EXTRA_AFLAGS	:= $(CFLAGS)
 EXTRA_CFLAGS	:= -Werror -Wno-sign-compare
 

arch/arm/Makefile

@@ -9,7 +9,7 @@
 
 LDFLAGS_vmlinux	:=-p --no-undefined -X
 LDFLAGS_BLOB	:=--format binary
-AFLAGS_vmlinux.lds.o = -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
+CPPFLAGS_vmlinux.lds = -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
 OBJCOPYFLAGS	:=-O binary -R .note -R .comment -S
 GZFLAGS		:=-9
 #CFLAGS		+=-pipe

arch/arm/kernel/Makefile

@@ -26,7 +26,7 @@ endif
 head-y			:= head.o
 obj-$(CONFIG_DEBUG_LL)	+= debug.o
 
-extra-y := $(head-y) init_task.o vmlinux.lds.s
+extra-y := $(head-y) init_task.o vmlinux.lds
 
 # Spell out some dependencies that aren't automatically figured out
 $(obj)/entry-armv.o: 	$(obj)/entry-header.S include/asm-arm/constants.h

arch/arm26/Makefile

@@ -9,7 +9,7 @@
 
 LDFLAGS_vmlinux	:=-p -X
 LDFLAGS_BLOB	:=--format binary
-AFLAGS_vmlinux.lds.o = -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
+CPPFLAGS_vmlinux.lds = -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
 OBJCOPYFLAGS	:=-O binary -R .note -R .comment -S
 GZFLAGS		:=-9
 

arch/arm26/kernel/Makefile

@@ -14,5 +14,5 @@ obj-y		:= compat.o dma.o entry.o irq.o   \
 obj-$(CONFIG_FIQ)		+= fiq.o
 obj-$(CONFIG_MODULES)		+= armksyms.o
 
-extra-y := init_task.o vmlinux.lds.s
+extra-y := init_task.o vmlinux.lds
 

arch/cris/Makefile

@@ -29,7 +29,7 @@ LDFLAGS_BLOB	:= --format binary --oformat elf32-cris \
 
 OBJCOPYFLAGS := -O binary -R .note -R .comment -S
 
-AFLAGS_vmlinux.lds.o = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE)
+CPPFLAGS_vmlinux.lds = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE)
 AFLAGS += -mlinux
 
 CFLAGS := $(CFLAGS) -mlinux -march=$(arch-y) -pipe

arch/cris/kernel/Makefile

@@ -3,7 +3,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y	:= vmlinux.lds.s
+extra-y	:= vmlinux.lds
 
 obj-y   := process.o traps.o irq.o ptrace.o setup.o \
 	   time.o sys_cris.o semaphore.o

arch/h8300/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y := vmlinux.lds.s
+extra-y := vmlinux.lds
 
 obj-y := process.o traps.o ptrace.o ints.o \
 	 sys_h8300.o time.o semaphore.o signal.o \

arch/i386/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y := head.o init_task.o vmlinux.lds.s
+extra-y := head.o init_task.o vmlinux.lds
 
 obj-y	:= process.o semaphore.o signal.o entry.o traps.o irq.o vm86.o \
 		ptrace.o i8259.o ioport.o ldt.o setup.o time.o sys_i386.o \

arch/ia64/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y	:= head.o init_task.o vmlinux.lds.s
+extra-y	:= head.o init_task.o vmlinux.lds
 
 obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o	\
 	 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o		\
@@ -21,25 +21,25 @@ obj-$(CONFIG_IA64_CYCLONE)	+= cyclone.o
 # The gate DSO image is built using a special linker script.
 targets += gate.so gate-syms.o
 
-extra-y += gate.so gate-syms.o gate.lds.s gate.o
+extra-y := gate.so gate-syms.o gate.lds gate.o
 
 # fp_emulate() expects f2-f5,f16-f31 to contain the user-level state.
 CFLAGS_traps.o  += -mfixed-range=f2-f5,f16-f31
 
-AFLAGS_gate.lds.o += -P -C -U$(ARCH)
+CPPFLAGS_gate.lds := -P -C -U$(ARCH)
 
 quiet_cmd_gate = GATE $@
       cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
 
 GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1
-$(obj)/gate.so: $(obj)/gate.lds.s $(obj)/gate.o FORCE
+$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
 	$(call if_changed,gate)
 
 $(obj)/built-in.o: $(obj)/gate-syms.o
 $(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
 
 GATECFLAGS_gate-syms.o = -r
-$(obj)/gate-syms.o: $(src)/gate.lds.s $(obj)/gate.o FORCE
+$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
 	$(call if_changed,gate)
 
 # gate-data.o contains the gate DSO image as data in section .data.gate.

arch/m68k/kernel/Makefile

@@ -7,7 +7,7 @@ ifndef CONFIG_SUN3
 else
   extra-y := sun3-head.o
 endif
-extra-y	+= vmlinux.lds.s
+extra-y	+= vmlinux.lds
 
 obj-y		:= entry.o process.o traps.o ints.o signal.o ptrace.o \
 			sys_m68k.o time.o semaphore.o setup.o m68k_ksyms.o

arch/m68knommu/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for arch/m68knommu/kernel.
 #
 
-extra-y := vmlinux.lds.s
+extra-y := vmlinux.lds
 
 obj-y += dma.o entry.o init_task.o m68k_ksyms.o process.o ptrace.o semaphore.o \
 	 setup.o signal.o syscalltable.o sys_m68k.o time.o traps.o

arch/mips/Makefile

@@ -643,7 +643,7 @@ endif
 # none has been choosen above.
 #
 
-AFLAGS_vmlinux.lds.o := \
+CPPFLAGS_vmlinux.lds := \
 	-D"LOADADDR=$(load-y)" \
 	-D"JIFFIES=$(JIFFIES)" \
 	-imacros $(srctree)/include/asm-$(ARCH)/sn/mapped_kernel.h

arch/mips/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the Linux/MIPS kernel.
 #
 
-extra-y		:= head.o init_task.o vmlinux.lds.s
+extra-y		:= head.o init_task.o vmlinux.lds
 
 obj-y		+= cpu-probe.o branch.o entry.o genex.o irq.o process.o \
 		   ptrace.o reset.o semaphore.o setup.o signal.o syscall.o \

arch/parisc/kernel/Makefile

@@ -4,7 +4,7 @@
 
 head-y			:= head.o
 head-$(CONFIG_PARISC64)	:= head64.o
-extra-y			:= init_task.o $(head-y) vmlinux.lds.s
+extra-y			:= init_task.o $(head-y) vmlinux.lds
 
 AFLAGS_entry.o	:= -traditional
 AFLAGS_pacache.o := -traditional

arch/ppc/Makefile

@@ -70,7 +70,7 @@ BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
 
 all: zImage
 
-AFLAGS_vmlinux.lds.o	:= -Upowerpc
+CPPFLAGS_vmlinux.lds	:= -Upowerpc
 
 # All the instructions talk about "make bzImage".
 bzImage: zImage

arch/ppc/kernel/Makefile

@@ -9,7 +9,7 @@ extra-$(CONFIG_E500)		:= head_e500.o
 extra-$(CONFIG_8xx)		:= head_8xx.o
 extra-$(CONFIG_6xx)		+= idle_6xx.o
 extra-$(CONFIG_POWER4)		+= idle_power4.o
-extra-y				+= vmlinux.lds.s
+extra-y				+= vmlinux.lds
 
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o signal.o ptrace.o align.o \

arch/ppc64/kernel/Makefile

@@ -3,7 +3,7 @@
 #
 
 EXTRA_CFLAGS	+= -mno-minimal-toc
-extra-y		:= head.o vmlinux.lds.s
+extra-y		:= head.o vmlinux.lds
 
 obj-y               :=	setup.o entry.o traps.o irq.o idle.o dma.o \
 			time.o process.o signal.o syscalls.o misc.o ptrace.o \

arch/s390/kernel/Makefile

@@ -10,7 +10,7 @@ obj-y	:=  bitmap.o traps.o time.o process.o \
 
 extra-$(CONFIG_ARCH_S390_31)	+= head.o 
 extra-$(CONFIG_ARCH_S390X)	+= head64.o 
-extra-y				+= init_task.o vmlinux.lds.s
+extra-y				+= init_task.o vmlinux.lds
 
 obj-$(CONFIG_MODULES)		+= s390_ksyms.o module.o
 obj-$(CONFIG_SMP)		+= smp.o

arch/sh/Makefile

@@ -122,7 +122,7 @@ drivers-$(CONFIG_OPROFILE)	+= arch/sh/oprofile/
 
 boot := arch/sh/boot
 
-AFLAGS_vmlinux.lds.o := -traditional
+CPPFLAGS_vmlinux.lds := -traditional
 
 prepare: target_links
 

arch/sh/boot/compressed/Makefile

@@ -22,7 +22,7 @@ CONFIG_MEMORY_START     ?= 0x0c000000
 CONFIG_BOOT_LINK_OFFSET ?= 0x00800000
 IMAGE_OFFSET := $(shell printf "0x%8x" $$[0x80000000+$(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)])
 
-LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds.s
+LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds
 
 $(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
 	$(call if_changed,ld)

arch/sh/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the Linux/SuperH kernel.
 #
 
-extra-y	:= head.o init_task.o vmlinux.lds.s
+extra-y	:= head.o init_task.o vmlinux.lds
 
 obj-y	:= process.o signal.o entry.o traps.o irq.o \
 	ptrace.o setup.o time.o sys_sh.o semaphore.o \

arch/sh64/boot/compressed/Makefile

@@ -12,7 +12,7 @@
 #
 
 targets		:= vmlinux vmlinux.bin vmlinux.bin.gz \
-		   head.o misc.o cache.o piggy.o vmlinux.lds.o
+		   head.o misc.o cache.o piggy.o vmlinux.lds
 
 EXTRA_AFLAGS	:= -traditional
 
@@ -25,7 +25,7 @@ OBJECTS		:= $(obj)/head.o $(obj)/misc.o $(obj)/cache.o
 ZIMAGE_OFFSET = $(shell printf "0x%8x" $$[$(CONFIG_MEMORY_START)+0x400000+0x10000])
 
 LDFLAGS_vmlinux := -Ttext $(ZIMAGE_OFFSET) -e startup \
-		    -T $(obj)/../../kernel/vmlinux.lds.s \
+		    -T $(obj)/../../kernel/vmlinux.lds \
 		    --no-warn-mismatch
 
 $(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
@@ -41,6 +41,6 @@ $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 LDFLAGS_piggy.o := -r --format binary --oformat elf32-sh64-linux -T
 OBJCOPYFLAGS += -R .empty_zero_page
 
-$(obj)/piggy.o: $(obj)/vmlinux.lds.s $(obj)/vmlinux.bin.gz FORCE
+$(obj)/piggy.o: $(obj)/vmlinux.lds $(obj)/vmlinux.bin.gz FORCE
 	$(call if_changed,ld)
 

arch/sparc/boot/Makefile

@@ -37,7 +37,7 @@ endef
 
 BTOBJS := $(HEAD_Y) $(INIT_Y)
 BTLIBS := $(CORE_Y) $(LIBS_Y) $(DRIVERS_Y) $(NET_Y)
-LDFLAGS_image := -T arch/sparc/kernel/vmlinux.lds.s $(BTOBJS) \
+LDFLAGS_image := -T arch/sparc/kernel/vmlinux.lds $(BTOBJS) \
                   --start-group $(BTLIBS) --end-group \
                   $(kallsyms.o) $(obj)/btfix.o
 

arch/sparc/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y		:= head.o init_task.o vmlinux.lds.s
+extra-y		:= head.o init_task.o vmlinux.lds
 
 EXTRA_AFLAGS	:= -ansi
 

arch/sparc64/Makefile

@@ -10,7 +10,7 @@
 
 CHECK		:= $(CHECK) -D__sparc__=1 -D__sparc_v9__=1
 
-AFLAGS_vmlinux.lds.o += -Usparc
+CPPFLAGS_vmlinux.lds += -Usparc
 
 CC		:= $(shell if $(CC) -m64 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo $(CC); else echo sparc64-linux-gcc; fi )
 

arch/sparc64/kernel/Makefile

@@ -5,7 +5,7 @@
 EXTRA_AFLAGS := -ansi
 EXTRA_CFLAGS := -Werror
 
-extra-y		:= head.o init_task.o vmlinux.lds.s
+extra-y		:= head.o init_task.o vmlinux.lds
 
 obj-y		:= process.o setup.o cpu.o idprom.o \
 		   traps.o devices.o auxio.o \

arch/um/Makefile

@@ -77,7 +77,7 @@ vmlinux: $(ARCH_DIR)/main.o
 # CONFIG_MODE_SKAS + CONFIG_STATIC_LINK case.
 
 LINK_TT = -static
-LD_SCRIPT_TT := uml.lds.s
+LD_SCRIPT_TT := uml.lds
 
 ifeq ($(CONFIG_STATIC_LINK),y)
   LINK-y += $(LINK_TT)
@@ -98,12 +98,12 @@ CPP_MODE_TT := $(shell [ "$(CONFIG_MODE_TT)" = "y" ] && echo -DMODE_TT)
 CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
 
-AFLAGS_vmlinux.lds.o = -U$(SUBARCH) \
+CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
 	-DSTART=$$(($(TOP_ADDR) - $(SIZE))) -DELF_ARCH=$(ELF_ARCH) \
 	-DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE_TT) \
 	-DKERNEL_STACK_SIZE=$(STACK_SIZE)
 
-AFLAGS_$(LD_SCRIPT-y:.s=).o = $(AFLAGS_vmlinux.lds.o) -P -C -Uum
+CPPFLAGS_$(LD_SCRIPT-y) = $(CPPFLAGS_vmlinux.lds) -P -C -Uum
 
 LD_SCRIPT-y := $(ARCH_DIR)/$(LD_SCRIPT-y)
 
@@ -122,7 +122,7 @@ USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
 # To get a definition of F_SETSIG
 USER_CFLAGS += -D_GNU_SOURCE
 
-CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/uml.lds.s \
+CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/uml.lds \
 	$(ARCH_DIR)/dyn_link.ld.s $(GEN_HEADERS)
 
 $(ARCH_DIR)/main.o: $(ARCH_DIR)/main.c

arch/um/Makefile-skas

@@ -12,7 +12,7 @@ LINK-$(CONFIG_GPROF) += $(PROFILE)
 MODE_INCLUDE += -I$(TOPDIR)/$(ARCH_DIR)/kernel/skas/include
 
 LINK_SKAS = -Wl,-rpath,/lib 
-LD_SCRIPT_SKAS = dyn.lds.s
+LD_SCRIPT_SKAS = dyn.lds
 
 GEN_HEADERS += $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h
 

arch/um/kernel/Makefile

@@ -3,7 +3,7 @@
 # Licensed under the GPL
 #
 
-extra-y := vmlinux.lds.s
+extra-y := vmlinux.lds
 
 obj-y = checksum.o config.o exec_kern.o exitcode.o frame_kern.o frame.o \
 	helper.o init_task.o irq.o irq_user.o ksyms.o mem.o mem_user.o \

arch/v850/kernel/Makefile

@@ -9,7 +9,7 @@
 # for more details.
 #
 
-extra-y := head.o init_task.o vmlinux.lds.s
+extra-y := head.o init_task.o vmlinux.lds
 
 obj-y += intv.o entry.o process.o syscalls.o time.o semaphore.o setup.o \
 	 signal.o irq.o mach.o ptrace.o bug.o

arch/x86_64/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y 	:= head.o head64.o init_task.o vmlinux.lds.s
+extra-y 	:= head.o head64.o init_task.o vmlinux.lds
 EXTRA_AFLAGS	:= -traditional
 obj-y	:= process.o semaphore.o signal.o entry.o traps.o irq.o \
 		ptrace.o i8259.o ioport.o ldt.o setup.o time.o sys_x86_64.o \

arch/x86_64/kernel/Makefile-HEAD

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y 	:= head.o head64.o init_task.o vmlinux.lds.s
+extra-y 	:= head.o head64.o init_task.o vmlinux.lds
 EXTRA_AFLAGS	:= -traditional
 obj-y	:= process.o semaphore.o signal.o entry.o traps.o irq.o \
 		ptrace.o i8259.o ioport.o ldt.o setup.o time.o sys_x86_64.o \

scripts/Makefile.build

@@ -219,6 +219,14 @@ cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<
 targets += $(real-objs-y) $(real-objs-m) $(lib-y)
 targets += $(extra-y) $(MAKECMDGOALS) $(always)
 
+# Linker scripts preprocessor (.lds.S -> .lds)
+# ---------------------------------------------------------------------------
+quiet_cmd_cpp_lds_S = LDS     $@
+      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ -o $@ $<
+
+%.lds: %.lds.S FORCE
+	$(call if_changed_dep,cpp_lds_S)
+
 # Build the compiled-in targets
 # ---------------------------------------------------------------------------
 

scripts/Makefile.lib

@@ -100,6 +100,7 @@ modname_flags  = $(if $(filter 1,$(words $(modname))),-DKBUILD_MODNAME=$(subst $
 
 _c_flags       = $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$(*F).o)
 _a_flags       = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
+_cpp_flags     = $(CPPFLAGS) $(EXTRA_CPPFLAGS) $(CPPFLAGS_$(@F))
 
 # If building the kernel in a separate objtree expand all occurrences
 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
@@ -107,6 +108,7 @@ _a_flags       = $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
 ifeq ($(KBUILD_SRC),)
 __c_flags	= $(_c_flags)
 __a_flags	= $(_a_flags)
+__cpp_flags     = $(_cpp_flags)
 else
 
 # Prefix -I with $(srctree) if it is not an absolute path
@@ -120,6 +122,7 @@ flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))
 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
 __c_flags	= $(call addtree,-I$(obj)) $(call flags,_c_flags)
 __a_flags	=                          $(call flags,_a_flags)
+__cpp_flags     =                          $(call flags,_cpp_flags)
 endif
 
 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
@@ -129,6 +132,8 @@ c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(CPPFLAGS) \
 		 $(__a_flags) $(modkern_aflags)
 
+cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(__cpp_flags)
+
 ld_flags       = $(LDFLAGS) $(EXTRA_LDFLAGS)
 
 # Finds the multi-part object the current object will be linked into

scripts/Makefile.modpost

@@ -50,7 +50,8 @@ _modpost: $(modules)
 # Step 2), invoke modpost
 #  Includes step 3,4
 quiet_cmd_modpost = MODPOST
-      cmd_modpost = scripts/mod/modpost \
+      cmd_modpost = scripts/mod/modpost            \
+        $(if $(CONFIG_MODVERSIONS),-m)             \
 	$(if $(KBUILD_EXTMOD),-i,-o) $(symverfile) \
 	$(filter-out FORCE,$^)
 

scripts/mod/modpost.c

@@ -343,7 +343,6 @@ handle_modversions(struct module *mod, struct elf_info *info,
 			crc = (unsigned int) sym->st_value;
 			add_exported_symbol(symname + strlen(CRC_PFX),
 					    mod, &crc);
-			modversions = 1;
 		}
 		break;
 	case SHN_UNDEF:
@@ -649,7 +648,6 @@ read_dump(const char *fname)
 
 		if (!(mod = find_module(modname))) {
 			if (is_vmlinux(modname)) {
-				modversions = 1;
 				have_vmlinux = 1;
 			}
 			mod = new_module(NOFAIL(strdup(modname)));
@@ -696,11 +694,14 @@ main(int argc, char **argv)
 	char *dump_read = NULL, *dump_write = NULL;
 	int opt;
 
-	while ((opt = getopt(argc, argv, "i:o:")) != -1) {
+	while ((opt = getopt(argc, argv, "i:mo:")) != -1) {
 		switch(opt) {
 			case 'i':
 				dump_read = optarg;
 				break;
+			case 'm':
+				modversions = 1;
+				break;
 			case 'o':
 				dump_write = optarg;
 				break;