This is a note to let you know that I've just added the patch titled arm64: vdso32: suppress error message for 'make mrproper' to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-vdso32-suppress-error-message-for-make-mrproper.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 14831fad73f5ac30ac61760487d95a538e6ab3cb Mon Sep 17 00:00:00 2001 From: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Date: Tue, 19 Oct 2021 15:36:45 -0700 Subject: arm64: vdso32: suppress error message for 'make mrproper' From: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> commit 14831fad73f5ac30ac61760487d95a538e6ab3cb upstream. When running the following command without arm-linux-gnueabi-gcc in one's $PATH, the following warning is observed: $ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 mrproper make[1]: arm-linux-gnueabi-gcc: No such file or directory This is because KCONFIG is not run for mrproper, so CONFIG_CC_IS_CLANG is not set, and we end up eagerly evaluating various variables that try to invoke CC_COMPAT. This is a similar problem to what was observed in commit dc960bfeedb0 ("h8300: suppress error messages for 'make clean'") Reported-by: Lucas Henneman <henneman@xxxxxxxxxx> Suggested-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx> Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx> Link: https://lore.kernel.org/r/20211019223646.1146945-4-ndesaulniers@xxxxxxxxxx Signed-off-by: Will Deacon <will@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/kernel/vdso32/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/arm64/kernel/vdso32/Makefile +++ b/arch/arm64/kernel/vdso32/Makefile @@ -32,7 +32,8 @@ cc32-as-instr = $(call try-run,\ # As a result we set our own flags here. # KBUILD_CPPFLAGS and NOSTDINC_FLAGS from top-level Makefile -VDSO_CPPFLAGS := -D__KERNEL__ -nostdinc -isystem $(shell $(CC_COMPAT) -print-file-name=include) +VDSO_CPPFLAGS := -D__KERNEL__ -nostdinc +VDSO_CPPFLAGS += -isystem $(shell $(CC_COMPAT) -print-file-name=include 2>/dev/null) VDSO_CPPFLAGS += $(LINUXINCLUDE) # Common C and assembly flags Patches currently in stable-queue which might be from ndesaulniers@xxxxxxxxxx are queue-5.4/powerpc-dcr-use-cmplwi-instead-of-3-argument-cmpli.patch queue-5.4/sh-check-return-code-of-request_irq.patch queue-5.4/arm64-vdso32-suppress-error-message-for-make-mrproper.patch