a0f97e06a4
The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
118 lines
3 KiB
Makefile
118 lines
3 KiB
Makefile
#
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# m68k/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 Hamish Macdonald
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#
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# test for cross compiling
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COMPILE_ARCH = $(shell uname -m)
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# override top level makefile
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AS += -m68020
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LDFLAGS := -m m68kelf
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LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds
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ifneq ($(COMPILE_ARCH),$(ARCH))
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# prefix for cross-compiling binaries
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CROSS_COMPILE = m68k-linux-gnu-
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endif
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ifdef CONFIG_SUN3
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LDFLAGS_vmlinux = -N
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endif
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CHECKFLAGS += -D__mc68000__
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# without -fno-strength-reduce the 53c7xx.c driver fails ;-(
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KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2
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# enable processor switch if compiled only for a single cpu
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ifndef CONFIG_M68020
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ifndef CONFIG_M68030
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ifndef CONFIG_M68060
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KBUILD_CFLAGS += -m68040
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endif
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ifndef CONFIG_M68040
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KBUILD_CFLAGS += -m68060
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endif
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endif
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endif
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ifdef CONFIG_KGDB
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# If configured for kgdb support, include debugging infos and keep the
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# frame pointer
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KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
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endif
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ifndef CONFIG_SUN3
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head-y := arch/m68k/kernel/head.o
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else
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head-y := arch/m68k/kernel/sun3-head.o
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endif
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core-y += arch/m68k/kernel/ arch/m68k/mm/
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libs-y += arch/m68k/lib/
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core-$(CONFIG_Q40) += arch/m68k/q40/
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core-$(CONFIG_AMIGA) += arch/m68k/amiga/
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core-$(CONFIG_ATARI) += arch/m68k/atari/
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core-$(CONFIG_MAC) += arch/m68k/mac/
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core-$(CONFIG_HP300) += arch/m68k/hp300/
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core-$(CONFIG_APOLLO) += arch/m68k/apollo/
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core-$(CONFIG_MVME147) += arch/m68k/mvme147/
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core-$(CONFIG_MVME16x) += arch/m68k/mvme16x/
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core-$(CONFIG_BVME6000) += arch/m68k/bvme6000/
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core-$(CONFIG_SUN3X) += arch/m68k/sun3x/ arch/m68k/sun3/
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core-$(CONFIG_SUN3) += arch/m68k/sun3/ arch/m68k/sun3/prom/
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core-$(CONFIG_M68040) += arch/m68k/fpsp040/
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core-$(CONFIG_M68060) += arch/m68k/ifpsp060/
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core-$(CONFIG_M68KFPU_EMU) += arch/m68k/math-emu/
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all: zImage
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lilo: vmlinux
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if [ -f $(INSTALL_PATH)/vmlinux ]; then mv -f $(INSTALL_PATH)/vmlinux $(INSTALL_PATH)/vmlinux.old; fi
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if [ -f $(INSTALL_PATH)/System.map ]; then mv -f $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
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cat vmlinux > $(INSTALL_PATH)/vmlinux
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cp System.map $(INSTALL_PATH)/System.map
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if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
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zImage compressed: vmlinux.gz
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vmlinux.gz: vmlinux
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ifndef CONFIG_KGDB
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cp vmlinux vmlinux.tmp
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$(STRIP) vmlinux.tmp
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gzip -9c vmlinux.tmp >vmlinux.gz
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rm vmlinux.tmp
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else
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gzip -9c vmlinux >vmlinux.gz
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endif
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bzImage: vmlinux.bz2
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vmlinux.bz2: vmlinux
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ifndef CONFIG_KGDB
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cp vmlinux vmlinux.tmp
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$(STRIP) vmlinux.tmp
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bzip2 -1c vmlinux.tmp >vmlinux.bz2
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rm vmlinux.tmp
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else
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bzip2 -1c vmlinux >vmlinux.bz2
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endif
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archclean:
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rm -f vmlinux.gz vmlinux.bz2
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