linux-kernel - [PATCH 2/3] KVM: arm/arm64: remove -I. header search paths

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Date:   Fri, 25 Jan 2019 16:57:29 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Marc Zyngier <marc.zyngier@....com>,
        Christoffer Dall <christoffer.dall@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org, Russell King <linux@...linux.org.uk>,
        Will Deacon <will.deacon@....com>,
        Catalin Marinas <catalin.marinas@....com>
Subject: [PATCH 2/3] KVM: arm/arm64: remove -I. header search paths

The header search path -I. in kernel Makefiles is very suspicious;
it allows the compiler to search for headers in the top of $(srctree),
where obviously no header file exists.

I was able to build without these extra header search paths.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 arch/arm/kvm/Makefile   | 3 +--
 arch/arm64/kvm/Makefile | 2 --
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile
index 48de846..bca775e 100644
--- a/arch/arm/kvm/Makefile
+++ b/arch/arm/kvm/Makefile
@@ -9,8 +9,7 @@ ifeq ($(plus_virt),+virt)
 endif
 
 ccflags-y += -Iarch/arm/kvm -Ivirt/kvm/arm/vgic
-CFLAGS_arm.o := -I. $(plus_virt_def)
-CFLAGS_mmu.o := -I.
+CFLAGS_arm.o := $(plus_virt_def)
 
 AFLAGS_init.o := -Wa,-march=armv7-a$(plus_virt)
 AFLAGS_interrupts.o := -Wa,-march=armv7-a$(plus_virt)
diff --git a/arch/arm64/kvm/Makefile b/arch/arm64/kvm/Makefile
index 0f2a135..3089b31 100644
--- a/arch/arm64/kvm/Makefile
+++ b/arch/arm64/kvm/Makefile
@@ -4,8 +4,6 @@
 #
 
 ccflags-y += -Iarch/arm64/kvm -Ivirt/kvm/arm/vgic
-CFLAGS_arm.o := -I.
-CFLAGS_mmu.o := -I.
 
 KVM=../../../virt/kvm
 
-- 
2.7.4