[FFmpeg-devel] Unable to compile with cuda on WSL2

[Timo Rothenpieler]

On 02.04.2023 08:12, Dylan Fernando wrote:
> My PATH has /usr/local/cuda-12.1/bin, is this correct?

I don't know. All ffmpeg needs is a working nvcc on PATH.

> I installed clang with sudo apt install clang. When I run:
> ./configure --enable-cuda-llvm --extra-cflags=-I/opt/local/cuda/include
> --nvccflags="-gencode arch=compute_52,code=sm_52 -O2"
> 
> I get the error:
> ERROR: cuda_llvm requested but not found
> 
> If you think configure made a mistake, make sure you are using the latest
> version from Git.  If the latest version fails, report the problem to the
> ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
> Include the log file "ffbuild/config.log" produced by configure as this
> will help
> solve the problem.
> 
> attached full log
> 

"clang: error: unknown argument: '-gencode'"
The arguments for clang to control the target cuda arch are different.
I don't know how exactly they look, but you can probably easily find 
examples.