path: root/arch/arm64/Makefile
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authorMarc Zyngier <marc.zyngier@arm.com>2017-04-11 17:32:30 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2017-04-12 09:48:03 +0100
commitd91750f12c79101028cb93dc35eed6989fae4405 (patch)
tree1fa3b6da12b32db73fc304f1ac82e126ce9d69a7 /arch/arm64/Makefile
parentMerge tag 'arch-timer-errata-prereq' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into for-next/core (diff)
arm64: Silence spurious kbuild warning on menuconfig
Since bbb56c27228d ("arm64: Add detection code for broken .inst support in binutils"), running any make target that doesn't involve the cross compiler results in a spurious warning: $ make ARCH=arm64 menuconfig arch/arm64/Makefile:43: Detected assembler with broken .inst; disassembly will be unreliable while $ make ARCH=arm64 CROSS_COMPILE=aarch64-arm-linux- menuconfig is silent (assuming your compiler is not affected). That's because the code that tests for the workaround is always run, irrespective of the current configuration being available or not. An easy fix is to make the detection conditional on CONFIG_ARM64 being defined, which is only the case when actually building something. Fixes: bbb56c27228d ("arm64: Add detection code for broken .inst support in binutils") Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/Makefile')
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index b9a4a934ca05..7dedf2d8494e 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -37,10 +37,12 @@ $(warning LSE atomics not supported by binutils)
+ifeq ($(CONFIG_ARM64), y)
brokengasinst := $(call as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n,,-DCONFIG_BROKEN_GAS_INST=1)
-ifneq ($(brokengasinst),)
+ ifneq ($(brokengasinst),)
$(warning Detected assembler with broken .inst; disassembly will be unreliable)
+ endif
KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) $(brokengasinst)