4f1933620f
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>
84 lines
2.5 KiB
Makefile
84 lines
2.5 KiB
Makefile
#
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# arch/arm26/boot/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1995-2002 Russell King
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#
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# Note: the following conditions must always be true:
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# ZRELADDR == virt_to_phys(TEXTADDR)
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# PARAMS_PHYS must be with 4MB of ZRELADDR
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# INITRD_PHYS must be in RAM
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zreladdr-y := 0x02080000
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params_phys-y := 0x0207c000
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initrd_phys-y := 0x02180000
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ZRELADDR := 0x02080000
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ZTEXTADDR := 0x0207c000
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PARAMS_PHYS := $(params_phys-y)
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INITRD_PHYS := 0x02180000
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# We now have a PIC decompressor implementation. Decompressors running
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# from RAM should not define ZTEXTADDR. Decompressors running directly
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# from ROM or Flash must define ZTEXTADDR (preferably via the config)
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# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
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ifeq ($(CONFIG_ZBOOT_ROM),y)
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ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
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ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
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else
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ZTEXTADDR := 0
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ZBSSADDR := ALIGN(4)
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endif
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export ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS PARAMS_PHYS
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targets := Image zImage bootpImage xipImage
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$(obj)/Image: vmlinux FORCE
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$(call if_changed,objcopy)
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@echo ' Kernel: $@ is ready'
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$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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@echo ' Kernel: $@ is ready'
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$(obj)/compressed/vmlinux: vmlinux FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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ifeq ($(CONFIG_XIP_KERNEL),y)
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$(obj)/xipImage: vmlinux FORCE
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# $(OBJCOPY) -S -O binary -R .data -R .comment vmlinux vmlinux-text.bin
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# FIXME - where has .pci_fixup crept in from?
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$(OBJCOPY) -S -O binary -R .data -R .pci_fixup -R .comment vmlinux vmlinux-text.bin
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$(OBJCOPY) -S -O binary -R .init -R .text -R __ex_table -R .pci_fixup -R __ksymtab -R __ksymtab_gpl -R __kcrctab -R __kcrctab_gpl -R __param -R .comment vmlinux vmlinux-data.bin
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cat vmlinux-text.bin vmlinux-data.bin > $@
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$(RM) -f vmlinux-text.bin vmlinux-data.bin
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@echo ' Kernel: $@ is ready'
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endif
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PHONY += initrd
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initrd:
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@test "$(INITRD_PHYS)" != "" || \
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(echo This machine does not support INITRD; exit -1)
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@test "$(INITRD)" != "" || \
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(echo You must specify INITRD; exit -1)
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install: $(obj)/Image
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$(CONFIG_SHELL) $(obj)/install.sh \
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$(KERNELRELEASE) \
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$(obj)/Image System.map "$(INSTALL_PATH)"
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zinstall: $(obj)/zImage
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$(CONFIG_SHELL) $(obj)/install.sh \
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$(KERNELRELEASE) \
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$(obj)/zImage System.map "$(INSTALL_PATH)"
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subdir- := compressed
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