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SubjectRe: "arm64: vdso: Substitute gettimeofday() with C implementation" breaks clang build
On Tue, 2019-06-25 at 15:54 +0100, Vincenzo Frascino wrote:
> Hi Qian,
> ...
> >
> > but clang 7.0 is still use in many distros by default, so maybe this commit
> > can
> > be fixed by adding a conditional check to use "small" if clang version <
> > 8.0.
> >
> Could you please verify that the patch below works for you?
> Thanks,
> Vincenzo
> --->8----

It does not work unfortunately.

# make CC=clang -j 256 2>/tmp/warn3.txt
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/
  YACC    scripts/dtc/
  HOSTCC  scripts/dtc/
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTLD  scripts/dtc/dtc
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/recordmcount
  HOSTCC  scripts/sortextable
  DTC     arch/arm64/boot/dts/arm/foundation-v8.dtb
  DTC     arch/arm64/boot/dts/arm/foundation-v8-psci.dtb
  DTC     arch/arm64/boot/dts/arm/foundation-v8-gicv3.dtb
  DTC     arch/arm64/boot/dts/arm/foundation-v8-gicv3-psci.dtb
  DTC     arch/arm64/boot/dts/arm/juno.dtb
  DTC     arch/arm64/boot/dts/arm/juno-r1.dtb
  DTC     arch/arm64/boot/dts/arm/juno-r2.dtb
  DTC     arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dtb
  DTC     arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dtb
  DTC     arch/arm64/boot/dts/arm/fvp-base-revc.dtb
  DTC     arch/arm64/boot/dts/cavium/thunder2-99xx.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hi3798cv200-poplar.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hi6220-hikey.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hip05-d02.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hip06-d03.dtb
  DTC     arch/arm64/boot/dts/hisilicon/hip07-d05.dtb
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  CC      scripts/mod/empty.o
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/mod/modpost
  CC      kernel/bounds.s
  CALL    scripts/atomic/
  CC      arch/arm64/kernel/asm-offsets.s
  CALL    scripts/
  LDS     arch/arm64/kernel/vdso/
  AS      arch/arm64/kernel/vdso/note.o
  AS      arch/arm64/kernel/vdso/sigreturn.o
  CC      arch/arm64/kernel/vdso/vgettimeofday.o
  LD      arch/arm64/kernel/vdso/
  VDSOCHK arch/arm64/kernel/vdso/
00000000000009d0 R_AARCH64_JUMP_SLOT  _mcount

arch/arm64/kernel/vdso/ dynamic relocations are not supported
make[1]: *** [arch/arm64/kernel/vdso/Makefile:59:
arch/arm64/kernel/vdso/] Error 1
make: *** [arch/arm64/Makefile:180: vdso_prepare] Error 2

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