how to nvenc/nvdec build 1.18

[Marc]

> 
> Also, you may consider installing NVidia Video SDK 11 before running the
> gst-build to unitize the full power of the latest NVidia Video SDK.
> 

Hmmm there is not much installing with Video_Codec_SDK_11.1.5.zip. I assume this is just a

cp Video_Codec_SDK_11.1.5/Lib/linux/stubs/x86_64/*.so /usr/local/lib64/
cp /tmp/Video_Codec_SDK_11.1.5/Interface/*.h /usr/local/include/

I also installed a driver like this (building docker image)

./nvidia-installer --accept-license --skip-module-unload --silent --no-backup --no-kernel-module \
    --no-x-check --no-nouveau-check --no-distro-scripts --no-wine-files --no-unified-memory --no-drm \
    --skip-depmod --no-systemd

But running gst-inpspect gives this error:

nvenc gstnvenc.c:919:gst_nvenc_load_library: Could not query max supported api version, ret 1

On this docker test server I do not have a nvidia card, so I am not sure if the error is related to that. Here on my local environment I have an old GK104/GeForce GTX 760. That only supports cuda. Is this supported by this install? Or should I build some other drivers for the cuda?