linux-kernel - Re: arm64: gen-hyprel.c:40:10: fatal error: generated/autoconf.h: No such file or directory

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Message-ID: <CA+G9fYs4u=E+jMxTds8A-gYWchC4OSdx26cCw7079+w3_bUiZQ@mail.gmail.com>
Date:   Mon, 1 Feb 2021 20:31:05 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        kvm list <kvm@...r.kernel.org>, lkft-triage@...ts.linaro.org,
        kvmarm@...ts.cs.columbia.edu,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        James Morse <james.morse@....com>,
        julien.thierry.kdev@...il.com, suzuki.poulose@....com,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Subject: Re: arm64: gen-hyprel.c:40:10: fatal error: generated/autoconf.h: No
 such file or directory

On Mon, 1 Feb 2021 at 19:15, Marc Zyngier <maz@...nel.org> wrote:
>
> On 2021-02-01 13:38, Naresh Kamboju wrote:
> > Linux next 20210201 tag arm64 builds failed.
> > kernel config attached to this email.
> >
> > BAD:    next-20210201
> > GOOD: next-20210129
> >
> > make --silent --keep-going --jobs=8
> > O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=arm64
> > CROSS_COMPILE=aarch64-linux-gnu- 'CC=sccache aarch64-linux-gnu-gcc'
> > 'HOSTCC=sccache gcc'
> > arch/arm64/kvm/hyp/nvhe/gen-hyprel.c:40:10: fatal error:
> > generated/autoconf.h: No such file or directory
> >    40 | #include <generated/autoconf.h>
> >       |          ^~~~~~~~~~~~~~~~~~~~~~
> > compilation terminated.
> >
> > Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
>
> Could you please check with the fix suggested at [1]?

Here is the change I have applied and the arm64 builds successful now.

diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index 09d04dd50eb8..ed10fcf1b345 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -7,7 +7,7 @@ asflags-y := -D__KVM_NVHE_HYPERVISOR__
 ccflags-y := -D__KVM_NVHE_HYPERVISOR__

 hostprogs := gen-hyprel
-HOST_EXTRACFLAGS += -I$(srctree)/include
+HOST_EXTRACFLAGS += -I$(objtree)/include

 obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \
         hyp-main.o hyp-smp.o psci-relay.o


> [1] https://lore.kernel.org/r/20210201104251.5foc64qq3ewgnhuz@google.com


- Naresh