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Commit baa931e7 authored by Daniel Mentz's avatar Daniel Mentz Committed by Aayush Gupta
Browse files

vdso32: Invoke clang with correct path to GCC toolchain 



Clang needs to have access to a GCC toolchain which we advertise using
the command line option --gcc-toolchain=. Clang previously picked the
wrong toolchain which resulted in the following error message:

/..//bin/as: unrecognized option '-EL'

Bug: 123422077
Signed-off-by: default avatarDaniel Mentz <danielmentz@google.com>
Change-Id: I3e339dd446b71e2c75eb9e2c186eba715b3771cd
Signed-off-by: default avatarkhusika <khusikadhamar@gmail.com>
Signed-off-by: default avatarTheSync <repo-sync@outlook.com>
parent b84364b9

arch/arm64/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -68,6 +68,10 @@ ifeq ($(CONFIG_COMPAT_VDSO), y) 
  else ifeq ($(cc-name),clang)

    export CLANG_TRIPLE_ARM32 ?= $(CROSS_COMPILE_ARM32)

    export CLANG_TARGET_ARM32 := --target=$(notdir $(CLANG_TRIPLE_ARM32:%-=%))

    export GCC_TOOLCHAIN32_DIR := $(dir $(shell which $(CROSS_COMPILE_ARM32)ld))

    export GCC_TOOLCHAIN32 := $(realpath $(GCC_TOOLCHAIN32_DIR)/..)

    export CLANG_PREFIX32 := --prefix=$(GCC_TOOLCHAIN32_DIR)

    export CLANG_GCC32_TC := --gcc-toolchain=$(GCC_TOOLCHAIN32)

    export CONFIG_VDSO32 := y

    vdso32 := -DCONFIG_VDSO32=1

  else ifeq ($(shell which $(CROSS_COMPILE_ARM32)$(cc-name) 2> /dev/null),)

arch/arm64/kernel/vdso32/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ 
# A mix between the arm64 and arm vDSO Makefiles.



ifeq ($(cc-name),clang)

  CC_ARM32 := $(CC) $(CLANG_TARGET_ARM32) -no-integrated-as

  CC_ARM32 := $(CC) $(CLANG_TARGET_ARM32) -no-integrated-as $(CLANG_GCC32_TC) $(CLANG_PREFIX32)

else

  CC_ARM32 := $(CROSS_COMPILE_ARM32)$(cc-name)

endif