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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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aea447141c
The powerpc kernel uses setjmp which causes a warning when building
with clang:
In file included from arch/powerpc/xmon/xmon.c:51:
./arch/powerpc/include/asm/setjmp.h:15:13: error: declaration of
built-in function 'setjmp' requires inclusion of the header <setjmp.h>
[-Werror,-Wbuiltin-requires-header]
extern long setjmp(long *);
^
./arch/powerpc/include/asm/setjmp.h:16:13: error: declaration of
built-in function 'longjmp' requires inclusion of the header <setjmp.h>
[-Werror,-Wbuiltin-requires-header]
extern void longjmp(long *, long);
^
This *is* the header and we're not using the built-in setjump but
rather the one in arch/powerpc/kernel/misc.S. As the compiler warning
does not make sense, it for the files where setjmp is used.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
[mpe: Move subdir-ccflags in xmon/Makefile to not clobber -Werror]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
24 lines
618 B
Makefile
24 lines
618 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Makefile for xmon
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# Disable clang warning for using setjmp without setjmp.h header
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subdir-ccflags-y := $(call cc-disable-warning, builtin-requires-header)
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subdir-ccflags-$(CONFIG_PPC_WERROR) += -Werror
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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# Disable ftrace for the entire directory
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ORIG_CFLAGS := $(KBUILD_CFLAGS)
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KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
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ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
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obj-y += xmon.o nonstdio.o spr_access.o
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ifdef CONFIG_XMON_DISASSEMBLY
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obj-y += ppc-dis.o ppc-opc.o
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obj-$(CONFIG_SPU_BASE) += spu-dis.o spu-opc.o
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endif
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