[edk2-devel] OvmfPkgX64 doesn't build with CLANG38 (clang 14.0.3) NOOPT - undefined reference to `memcpy'

[Rebecca Cran]

On 5/25/22 10:43, Pedro Falcato wrote:
>
>
> On Wed, May 25, 2022 at 4:50 PM Ard Biesheuvel <ardb at kernel.org> wrote:
>
>     On Wed, 25 May 2022 at 17:08, Rebecca Cran
>     <quic_rcran at quicinc.com> wrote:
>     >
>     > I noticed OvmfPkg/OvmfPkgX64.dsc doesn't build with `-t CLANG38 -b
>     > NOOPT` (with clang version 14.0.2) with the latest edk2 master
>     > (07c0c2eb0a5970db614ebce1060fc79d6904bdfd):
>     >
>     > make: Nothing to be done for 'tbuild'.
>     > /usr/bin/ld: /usr/bin/ld: DWARF error: invalid or unhandled FORM
>     value:
>     > 0x23
>     >
>     /home/bcran/src/upstream/uefi/edk2/Build/OvmfX64/NOOPT_CLANG38/X64/OvmfPkg/VirtioGpuDxe/VirtioGpu/OUTPUT/VirtioGpuDxe.lib(Gop.obj):
>     > in function `GopSetMode':
>     > Gop.c:(.text.GopSetMode+0x418): undefined reference to `memcpy'
>
>     Can you dump the object file to see where the memcpy() call is
>     emitted?
>
> I think I found the smoking gun: 
> https://github.com/tianocore/edk2/blob/916f90baa547b3ebef8fa87c530e2f0c8e35e1e3/OvmfPkg/VirtioGpuDxe/Gop.c#L512

Ah, thanks! I've just sent out another email this time about building 
with the XCODE5 toolchain and _AsmRelocateApMailBoxLoopStart not being 
defined.

-- 
Rebecca Cran


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