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

[Naresh Kamboju]

On Mon, 1 Feb 2021 at 19:15, Marc Zyngier <maz at kernel.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 at linaro.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