Install Hybrid on Ubuntu 18.04 VNC

[sunarowicz]

I cannot build the Vapoursynth plugins. I do follow the instructions in this thread and in the hybrid-vapoursynth-addon GitHub page. Building the Vapoursynth by the build-vapoursynth.sh script seems to finish well. I do not change anything in the config.txt file, so Vapoursynth gets builded into the ~/opt/vapoursynth directory. Nothing is being made in /usr/local. Vspipe in the ~/opt/vapoursynth directory works, the version parameter returns the version R53.

The paths in the ~/.profile and ~/.bashrc files are modified in the following way:

export LD_LIBRARY_PATH=~/opt/vapoursynth/lib
export PYTHONPATH=~/opt/vapoursynth/lib/python3.8/site-packages

The build-plugins.sh script runs and finished well, without any problems. It reports the building of all the plugins to be done. But it is not in fact. There is no plugins subdirectory in ~/opt/vapoursynth, only the vsplugins subdirectory. And this one is empty after the build-plugins.sh script finishes.

There are no build logs in the hybrid-vapoursynth-addon-master build directory when bulding the plugins is done. Even no build subdirectory. But this subdirectory exists when the building process is in progress. So I catched one log during building just as an example. But it doesn't contain any errors nor warnings:

cat ./addgrain.log
Cloning into 'build'...
The Meson build system
Version: 0.57.2
Source dir: /home/jirka/hybrid-vapoursynth-addon-master/build/build
Build dir: /home/jirka/hybrid-vapoursynth-addon-master/build/build/build
Build type: native build
Project name: AddGrain
Project version: 8
C++ compiler for the host machine: c++ (gcc 9.3.0 "c++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0")
C++ linker for the host machine: c++ ld.bfd 2.34
Host machine cpu family: x86_64
Host machine cpu: x86_64
Found pkg-config: /usr/bin/pkg-config (0.29.1)
Run-time dependency vapoursynth found: YES 53
Build targets in project: 3

Found ninja-1.10.0.git.kitware.jobserver-1 at /home/jirka/.local/bin/ninja
ninja: Entering directory `build'
[1/8] Compiling C++ object libaddgrain.so.p/AddGrain_VCL2_instrset_detect.cpp.o
[2/8] Compiling C++ object libaddgrain.so.p/AddGrain_AddGrain_SSE2.cpp.o
[3/8] Compiling C++ object libavx512.a.p/AddGrain_AddGrain_AVX512.cpp.o
[4/8] Linking static target libavx512.a
[5/8] Compiling C++ object libavx2.a.p/AddGrain_AddGrain_AVX2.cpp.o
[6/8] Linking static target libavx2.a
[7/8] Compiling C++ object libaddgrain.so.p/AddGrain_AddGrain.cpp.o
[8/8] Linking target libaddgrain.so

So making it short, building the Vapoursynth runs and makes the output (working vspipe at least). Building Vapoursynth plugins runs, reports to be done well, but doesn't make any output (no built plugins).

The system is Ubuntu 20.04. Python3.8 is installed. What may be wrong?