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Subject: Re: compilation failure with CONFIG_VFIO_PCI_NVLINK2
To:     Laura Abbott <labbott@redhat.com>,
        Alex Williamson <alex.williamson@redhat.com>,
        Michael Ellerman <mpe@ellerman.id.au>
Cc:     kvm@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
References: <28d0ba1d-b116-178a-d6d0-8a8b569c7c02@redhat.com>
From:   Alexey Kardashevskiy <aik@ozlabs.ru>
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Message-ID: <e74e0922-af2e-dac4-2260-8589afa2426b@ozlabs.ru>
Date:   Fri, 4 Jan 2019 00:49:47 +1100
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On 03/01/2019 03:37, Laura Abbott wrote:
> Hi,
> 
> I got a compilation failure when building with CONFIG_VFIO_PCI_NVLINK2
> enabled:
> 
> + make -s 'HOSTCFLAGS=-O2 -g -pipe -Wall -Werror=format-security
> -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions
> -fstack-protector-strong -grecord-gcc-switches
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mcpu=power8
> -mtune=power8 -fasynchronous-unwind-tables -fstack-clash-protection'
> 'HOSTLDFLAGS=-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now
> -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,--build-id=uuid'
> ARCH=powerpc -j4 modules
> BUILDSTDERR: In file included from drivers/vfio/pci/trace.h:102,
> BUILDSTDERR:                  from drivers/vfio/pci/vfio_pci_nvlink2.c:29:
> BUILDSTDERR: ./include/trace/define_trace.h:89:42: fatal error:
> ./trace.h: No such file or directory
> BUILDSTDERR:  #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
> BUILDSTDERR:                                           ^
> BUILDSTDERR: compilation terminated.
> BUILDSTDERR: make[3]: *** [scripts/Makefile.build:277:
> drivers/vfio/pci/vfio_pci_nvlink2.o] Error 1
> BUILDSTDERR: make[2]: *** [scripts/Makefile.build:492: drivers/vfio/pci]
> Error 2
> BUILDSTDERR: make[1]: *** [scripts/Makefile.build:492: drivers/vfio]
> Error 2
> BUILDSTDERR: make: *** [Makefile:1053: drivers] Error 2
> BUILDSTDERR: make: *** Waiting for unfinished jobs....
> 
> I don't know enough about ftrace building to make a guess here.
> Config is attacked.

What gcc is this and what is the exact sha1 of the tree? gcc8 prints
other error with your config in drivers/scsi/esas2r/esas2r_ioctl.c but
not this one so I am curious.

> 
> Also, would it be possible to switch this option from def_bool to
> bool? I can't turn it off directly when it's def_bool.

Why? Honestly I'd rather fix the compile error.


-- 
Alexey