[Buildroot] Upgrading LLVM and Clang to version 11.0.0... issue with libclc

[Romain Naour <romain.naour@gmail.com>]

Hi Michael,

Le 08/01/2021 ? 11:07, Michael Opdenacker a ?crit?:
> Hi Romain,
> 
> Many thanks for your help and insights!

You're welcome

> 
> On 1/7/21 6:41 PM, Romain Naour wrote:
>> I believe CMake try to check clang as cross-compiler before using it.
>> Can you share the CMake error log file ?
> 
> 
> Here are the contents of the CMakeError.log file:
> 
>>>>
> 
> Determining if the CLC compiler works failed with the following output:
> 
> 
> Determining if the CLC compiler works failed with the following output:
> 
> 
> Determining if the CLC compiler works failed with the following output:
> 
> 
> Determining if the CLC compiler works failed with the following output:
> 
> <<<
> 
> CMakeOutput.log is a bit too big to share here

The log is not very useful, sorry.

Can you share your working branch ?
I can still test mesa3d with Clover on a r600 GPU.

> 
>>
>> For now, host/bin/clang can't be used as cross-compiler to build application
>> (the simple test program) because we need to add a wrapper like for gcc.
>>
>> configure.py was kind enough to accept host/bin/clang as is to build libclc library.
>>
>> If we can skip the cmake test, the library should build as before.
> 
> Ok, I'll try.
> 
>> I don't think we have to build libclc before clang, as you can see in the
>> current packaging only mesa3d depends on libclc. Clang itself doesn't depend on
>> libclc.
>>
>> You can find some details about the initial work in this blog:
>> https://www.linuxembedded.fr/2018/07/llvmclang-integration-into-buildroot/
> 
> 
> Great! This will definitely be useful.
> 
> Many thanks,

Good luck!

Best regards,
Romain

> 
> Michael.
>