#
# $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
-#
-# early bootup linking needs 32bit. You can either use real 32bit tools
-# here or 64bit tools in 32bit mode.
-#
-IA32_CC := $(CC) $(CPPFLAGS) -m32 -O2 -fomit-frame-pointer
-IA32_LD := $(LD) -m elf_i386
-IA32_AS := $(CC) $(AFLAGS) -m32 -Wa,--32 -traditional -c
-IA32_OBJCOPY := $(CROSS_COMPILE)objcopy
-IA32_CPP := $(CROSS_COMPILE)gcc -m32 -E
-export IA32_CC IA32_LD IA32_AS IA32_OBJCOPY IA32_CPP
-
-
LDFLAGS := -m elf_x86_64
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
LDFLAGS_vmlinux :=
-
CHECKFLAGS += -D__x86_64__ -m64
+cflags-y :=
+cflags-kernel-y :=
cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
-CFLAGS += $(cflags-y)
+cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
-CFLAGS += -mno-red-zone
-CFLAGS += -mcmodel=kernel
-CFLAGS += -pipe
+cflags-y += -m64
+cflags-y += -mno-red-zone
+cflags-y += -mcmodel=kernel
+cflags-y += -pipe
+cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections
# this makes reading assembly source easier, but produces worse code
# actually it makes the kernel smaller too.
-CFLAGS += -fno-reorder-blocks
-CFLAGS += -Wno-sign-compare
+cflags-y += -fno-reorder-blocks
+cflags-y += -Wno-sign-compare
+ifneq ($(CONFIG_UNWIND_INFO),y)
+cflags-y += -fno-asynchronous-unwind-tables
+endif
ifneq ($(CONFIG_DEBUG_INFO),y)
-CFLAGS += -fno-asynchronous-unwind-tables
# -fweb shrinks the kernel a bit, but the difference is very small
# it also messes up debugging, so don't use it for now.
-#CFLAGS += $(call cc-option,-fweb)
+#cflags-y += $(call cc-option,-fweb)
endif
# -funit-at-a-time shrinks the kernel .text considerably
# unfortunately it makes reading oopses harder.
-CFLAGS += $(call cc-option,-funit-at-a-time)
+cflags-y += $(call cc-option,-funit-at-a-time)
# prevent gcc from generating any FP code by mistake
-CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
+cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
+# do binutils support CFI?
+cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
+AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
+
+# is .cfi_signal_frame supported too?
+cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
+AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
+
+cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) -fstack-protector )
+cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) -fstack-protector-all )
+
+CFLAGS += $(cflags-y)
+CFLAGS_KERNEL += $(cflags-kernel-y)
+AFLAGS += -m64
head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
boot := arch/x86_64/boot
-.PHONY: bzImage bzlilo install archmrproper \
- fdimage fdimage144 fdimage288 archclean
+PHONY += bzImage bzlilo install archmrproper \
+ fdimage fdimage144 fdimage288 isoimage archclean
#Default target when executing "make"
all: bzImage
bzdisk: vmlinux
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
-install fdimage fdimage144 fdimage288: vmlinux
+fdimage fdimage144 fdimage288 isoimage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
+install:
+ $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
+
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
-prepare: include/asm-$(ARCH)/offset.h
-
-arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
- include/config/MARKER
-
-include/asm-$(ARCH)/offset.h: arch/$(ARCH)/kernel/asm-offsets.s
- $(call filechk,gen-asm-offsets)
-
-CLEAN_FILES += include/asm-$(ARCH)/offset.h
-
define archhelp
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo ' install - Install kernel using'
- echo ' (your) ~/bin/installkernel or'
- echo ' (distribution) /sbin/installkernel or'
- echo ' install to $$(INSTALL_PATH) and run lilo'
+ echo ' (your) ~/bin/installkernel or'
+ echo ' (distribution) /sbin/installkernel or'
+ echo ' install to $$(INSTALL_PATH) and run lilo'
+ echo ' bzdisk - Create a boot floppy in /dev/fd0'
+ echo ' fdimage - Create a boot floppy image'
+ echo ' isoimage - Create a boot CD-ROM image'
endef
-CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf
+CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
+ arch/$(ARCH)/boot/image.iso \
+ arch/$(ARCH)/boot/mtools.conf