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Install targets (install, zinstall, uinstall) on parisc have a dependency to vmlinux. This may cause parts of the kernel to be rebuilt during installation. We must avoid this since this may run as root. Install targets "ABSOLUTELY MUST NOT MODIFY THE SOURCE TREE." as Linus emphasized this in: http://lkml.org/lkml/2013/7/10/600 So on parisc and maybe other archs we need the same as for x86:1648e4f8x86, kbuild: make "make install" not depend on vmlinux This parisc patch was inspired by:19514fc6arm, kbuild: make "make install" not depend on vmlinux Signed-off-by: Helge Deller <deller@gmx.de>
152 lines
4.5 KiB
Makefile
152 lines
4.5 KiB
Makefile
#
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# parisc/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. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture
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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) 1994 by Linus Torvalds
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# Portions Copyright (C) 1999 The Puffin Group
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#
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# Modified for PA-RISC Linux by Paul Lahaie, Alex deVries,
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# Mike Shaver, Helge Deller and Martin K. Petersen
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#
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KBUILD_IMAGE := vmlinuz
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KBUILD_DEFCONFIG := default_defconfig
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NM = sh $(srctree)/arch/parisc/nm
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CHECKFLAGS += -D__hppa__=1
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LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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ifdef CONFIG_64BIT
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UTS_MACHINE := parisc64
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CHECKFLAGS += -D__LP64__=1 -m64
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CC_ARCHES = hppa64
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else # 32-bit
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CC_ARCHES = hppa hppa2.0 hppa1.1
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endif
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ifneq ($(SUBARCH),$(UTS_MACHINE))
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ifeq ($(CROSS_COMPILE),)
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CC_SUFFIXES = linux linux-gnu unknown-linux-gnu
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CROSS_COMPILE := $(call cc-cross-prefix, \
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$(foreach a,$(CC_ARCHES), \
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$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
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endif
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endif
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OBJCOPY_FLAGS =-O binary -R .note -R .comment -S
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cflags-y := -pipe
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# These flags should be implied by an hppa-linux configuration, but they
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# are not in gcc 3.2.
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cflags-y += -mno-space-regs -mfast-indirect-calls
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# Currently we save and restore fpregs on all kernel entry/interruption paths.
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# If that gets optimized, we might need to disable the use of fpregs in the
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# kernel.
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cflags-y += -mdisable-fpregs
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# Without this, "ld -r" results in .text sections that are too big
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# (> 0x40000) for branches to reach stubs.
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ifndef CONFIG_FUNCTION_TRACER
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cflags-y += -ffunction-sections
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endif
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# Use long jumps instead of long branches (needed if your linker fails to
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# link a too big vmlinux executable). Not enabled for building modules.
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ifdef CONFIG_MLONGCALLS
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KBUILD_CFLAGS_KERNEL += -mlong-calls
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endif
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# select which processor to optimise for
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cflags-$(CONFIG_PA7000) += -march=1.1 -mschedule=7100
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cflags-$(CONFIG_PA7200) += -march=1.1 -mschedule=7200
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cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC
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cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300
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cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000
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head-y := arch/parisc/kernel/head.o
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KBUILD_CFLAGS += $(cflags-y)
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kernel-y := mm/ kernel/ math-emu/
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kernel-$(CONFIG_HPUX) += hpux/
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core-y += $(addprefix arch/parisc/, $(kernel-y))
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libs-y += arch/parisc/lib/ $(LIBGCC)
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drivers-$(CONFIG_OPROFILE) += arch/parisc/oprofile/
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PALO := $(shell if (which palo 2>&1); then : ; \
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elif [ -x /sbin/palo ]; then echo /sbin/palo; \
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fi)
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PALOCONF := $(shell if [ -f $(src)/palo.conf ]; then echo $(src)/palo.conf; \
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else echo $(obj)/palo.conf; \
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fi)
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palo lifimage: vmlinuz
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@if test ! -x "$(PALO)"; then \
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echo 'ERROR: Please install palo first (apt-get install palo)';\
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echo 'or build it from source and install it somewhere in your $$PATH';\
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false; \
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fi
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@if test ! -f "$(PALOCONF)"; then \
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cp $(src)/arch/parisc/defpalo.conf $(obj)/palo.conf; \
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echo 'A generic palo config file ($(obj)/palo.conf) has been created for you.'; \
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echo 'You should check it and re-run "make palo".'; \
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echo 'WARNING: the "lifimage" file is now placed in this directory by default!'; \
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false; \
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fi
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$(PALO) -f $(PALOCONF)
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BOOT_TARGETS = zImage Image palo lifimage
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INSTALL_TARGETS = zinstall install
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PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
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bzImage zImage: vmlinuz
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Image: vmlinux
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vmlinuz: vmlinux
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@gzip -cf -9 $< > $@
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install:
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$(CONFIG_SHELL) $(src)/arch/parisc/install.sh \
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$(KERNELRELEASE) vmlinux System.map "$(INSTALL_PATH)"
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zinstall:
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$(CONFIG_SHELL) $(src)/arch/parisc/install.sh \
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$(KERNELRELEASE) vmlinuz System.map "$(INSTALL_PATH)"
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CLEAN_FILES += lifimage
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MRPROPER_FILES += palo.conf
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define archhelp
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@echo '* vmlinux - Uncompressed kernel image (./vmlinux)'
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@echo ' vmlinuz - Compressed kernel image (./vmlinuz)'
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@echo ' palo - Bootable image (./lifimage)'
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@echo ' install - Install uncompressed vmlinux kernel using'
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@echo ' (your) ~/bin/$(INSTALLKERNEL) or'
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@echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
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@echo ' copy to $$(INSTALL_PATH)'
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@echo ' zinstall - Install compressed vmlinuz kernel'
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endef
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# we require gcc 3.3 or above to compile the kernel
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archprepare: checkbin
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checkbin:
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@if test "$(call cc-version)" -lt "0303"; then \
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echo -n "Sorry, GCC v3.3 or above is required to build " ; \
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echo "the kernel." ; \
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false ; \
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fi
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