Re: On integrating LoongArch EDK2 firmware into QEMU build process

["maobibo" <maobibo@loongson.cn>]

Cc to Chao Li who is maintainer of edk2 about LoongArch support.

Hi Chao, 

Fedora38 is used to build edk2 binary in qemu CI, cross gcc-12 is
integrated on Fedora38. There is one issue when gcc-12 is used to
build edk2 loongarch like this:
> ... but when trying to use them to compile the loongarch firmware gcc
> throws errors:
>
> loongarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mno-explicit-reloc

what is your option about this issue?

Regards
Bibo, Mao

在 2023/4/1 13:11, maobibo 写道:
> 
> 
> On 2023/3/31 20:12, Gerd Hoffmann wrote:
>> On Fri, Mar 31, 2023 at 08:54:16AM +0800, maobibo wrote:
>>> Xuerui,
>>>
>>> Thanks for your mail, it is a good suggestion. Now we are planing to
>>> move LoongArch uefi bios from edk2-platform to edk2 repo, so that uefi
>>> bios supporting LoongArch can be auto compiled and uploaded to qemu
>>> repo. Only that process is somwhat slow since lacking of hands,
>>> however we are doing this.
>>
>> Good, so I think it makes sense for qemu to just wait for that to
>> happen.
>>
>> Related question:  What are the requirements to build the firmware?
>> Fedora 38 ships cross compiler packages ...
>>
>>    binutils-loongarch64-linux-gnu-2.39-3.fc38.x86_64
>>    gcc-loongarch64-linux-gnu-12.2.1-5.fc38.x86_64
>>
>> ... but when trying to use them to compile the loongarch firmware gcc
>> throws errors:
>>
>> loongarch64-linux-gnu-gcc: error: unrecognized command-line option ‘-mno-explicit-relocs’
>>
>> I suspect gcc-12 is just too old?
> There is a little different about relocation between gcc-12 and gcc-13 on LoongArch, gcc-13 is required for edk2 compiler now.
> 
> However I think it is actually is one issue if gcc-12 can not be used and gcc-12 is popular latest compiler for all architectures. We will solve this problem.
> 
> Regards
> Bibo, Mao
> 
> 
>>
>> take care,
>>    Gerd
>>
>