linux/arch/ia64/Makefile
Paul Smith 4f1933620f kbuild: change kbuild to not rely on incorrect GNU make behavior
The kbuild system takes advantage of an incorrect behavior in GNU make.
Once this behavior is fixed, all files in the kernel rebuild every time,
even if nothing has changed.  This patch ensures kbuild works with both
the incorrect and correct behaviors of GNU make.

For more details on the incorrect behavior, see:

http://lists.gnu.org/archive/html/bug-make/2006-03/msg00003.html

Changes in this patch:
  - Keep all targets that are to be marked .PHONY in a variable, PHONY.
  - Add .PHONY: $(PHONY) to mark them properly.
  - Remove any $(PHONY) files from the $? list when determining whether
    targets are up-to-date or not.

Signed-off-by: Paul Smith <psmith@gnu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-03-06 00:09:51 +01:00

97 lines
3.0 KiB
Makefile

#
# ia64/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1998-2004 by David Mosberger-Tang <davidm@hpl.hp.com>
#
NM := $(CROSS_COMPILE)nm -B
READELF := $(CROSS_COMPILE)readelf
export AWK
CHECKFLAGS += -m64 -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__
OBJCOPYFLAGS := --strip-all
LDFLAGS_vmlinux := -static
LDFLAGS_MODULE += -T $(srctree)/arch/ia64/module.lds
AFLAGS_KERNEL := -mconstant-gp
EXTRA :=
cflags-y := -pipe $(EXTRA) -ffixed-r13 -mfixed-range=f12-f15,f32-f127 \
-falign-functions=32 -frename-registers -fno-optimize-sibling-calls
CFLAGS_KERNEL := -mconstant-gp
GAS_STATUS = $(shell $(srctree)/arch/ia64/scripts/check-gas "$(CC)" "$(OBJDUMP)")
CPPFLAGS += $(shell $(srctree)/arch/ia64/scripts/toolchain-flags "$(CC)" "$(OBJDUMP)" "$(READELF)")
ifeq ($(GAS_STATUS),buggy)
$(error Sorry, you need a newer version of the assember, one that is built from \
a source-tree that post-dates 18-Dec-2002. You can find a pre-compiled \
static binary of such an assembler at: \
\
ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
endif
ifeq ($(call cc-version),0304)
cflags-$(CONFIG_ITANIUM) += -mtune=merced
cflags-$(CONFIG_MCKINLEY) += -mtune=mckinley
endif
CFLAGS += $(cflags-y)
head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o
libs-y += arch/ia64/lib/
core-y += arch/ia64/kernel/ arch/ia64/mm/
core-$(CONFIG_IA32_SUPPORT) += arch/ia64/ia32/
core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/
drivers-$(CONFIG_PCI) += arch/ia64/pci/
drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/
drivers-$(CONFIG_IA64_HP_ZX1) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/
drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/
boot := arch/ia64/hp/sim/boot
PHONY += boot compressed check
all: compressed unwcheck
compressed: vmlinux.gz
vmlinux.gz: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
unwcheck: vmlinux
-$(Q)READELF=$(READELF) $(srctree)/arch/ia64/scripts/unwcheck.py $<
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
CLEAN_FILES += vmlinux.gz bootloader
boot: lib/lib.a vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
install: vmlinux.gz
sh $(srctree)/arch/ia64/install.sh $(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"
define archhelp
echo '* compressed - Build compressed kernel image'
echo ' install - Install compressed kernel image'
echo ' boot - Build vmlinux and bootloader for Ski simulator'
echo '* unwcheck - Check vmlinux for invalid unwind info'
endef