forked from Minki/linux
23243c1ace
'cross_compiling' is defined by the top Makefile and available for arch Makefiles to check whether it is a cross build or not. A good thing is the variable name 'cross_compiling' is self-documenting. This is a simple replacement for m68k, mips, sh, for which $(ARCH) and $(SRCARCH) always match. No functional change is intended for xtensa, either. This is rather a fix for parisc because arch/parisc/Makefile defines UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix is not working in Kconfig time. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Helge Deller <deller@gmx.de> # parisc Acked-by: Max Filippov <jcmvbkbc@gmail.com> # xtensa
90 lines
2.7 KiB
Makefile
90 lines
2.7 KiB
Makefile
#
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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) 2001 - 2005 Tensilica Inc.
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# Copyright (C) 2014 Cadence Design Systems Inc.
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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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# Core configuration.
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# (Use VAR=<xtensa_config> to use another default compiler.)
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variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
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VARIANT = $(variant-y)
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export VARIANT
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ifneq ($(VARIANT),)
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ifdef cross_compiling
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ifndef CROSS_COMPILE
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CROSS_COMPILE = xtensa_$(VARIANT)-
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endif
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endif
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endif
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# Platform configuration
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platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
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platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
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platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga
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PLATFORM = $(platform-y)
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export PLATFORM
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# temporarily until string.h is fixed
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KBUILD_CFLAGS += -ffreestanding -D__linux__
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KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
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KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
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KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
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KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
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ifneq ($(CONFIG_LD_NO_RELAX),)
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KBUILD_LDFLAGS := --no-relax
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endif
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CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
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vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
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plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
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KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
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KBUILD_DEFCONFIG := iss_defconfig
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# Only build variant and/or platform if it includes a Makefile
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buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
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buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
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# Find libgcc.a
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LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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head-y := arch/xtensa/kernel/head.o
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core-y += arch/xtensa/kernel/ arch/xtensa/mm/
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core-y += $(buildvar) $(buildplf)
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core-y += arch/xtensa/boot/dts/
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libs-y += arch/xtensa/lib/ $(LIBGCC)
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boot := arch/xtensa/boot
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all Image zImage uImage xipImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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archheaders:
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$(Q)$(MAKE) $(build)=arch/xtensa/kernel/syscalls all
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define archhelp
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@echo '* Image - Kernel ELF image with reset vector'
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@echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
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@echo '* uImage - U-Boot wrapped image'
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@echo ' xipImage - XIP image'
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endef
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