Not running on Raspberry Pi 4, because armhf is not supported

[Feriman22]

Hy,

I tried to install it on my Raspberry Pi 4 (based on Raspbian).

Install command:
sudo snap install waifu2x-ncnn-vulkan

Then I got this error:

error: snap "waifu2x-ncnn-vulkan" is not available on this architecture (armhf) but exists on other
       architectures (amd64, arm64, i386, ppc64el).

Can it be modified to run on this device?

Thanks,
Feriman

[Nova-Aurora]

As for an armhf build, ncnn supports armhf, so it should be able to be compiled for it, though it may be slow depending on the attached GPU.

However, I strongly advise not using the snapcraft version of waifu2x-ncnn-vulkan. Snap (who maintain that distribution) has not updated it since April 30th, 2019, and it should be considered abandoned.

[Nova-Aurora]

Are you using the 32-bit version of Raspberry Pi OS or the 64-bit version?

[Feriman22]

I use 32-bit version. Is there any solution to upscale images with Raspberry Pi?

[Nova-Aurora]

I don't have a Pi 4, but I'll try compiling on my pi 3 tomorrow, if it doesn't break your use case, can you try with 64-bit Raspberry Pi OS?

You could also try compiling a 32-bit arm version using the build instructions, and report back if you get any errors.

[Nova-Aurora]

(The Pi 4 is an arm64 processor on the inside, however when running on a 32-bit operating system, it reports itself as the older 32-bit armhf architecture, and so it might work under a 64-bit OS as far as I know.)

[Feriman22]

Please let me know the result of compiling on your RPi 3, regarding filesize/increasing rate/elapsed time.

Thanks!

I'll try build it on my RPi4 soon.

[Nova-Aurora]

I didn't get it to compile, but I might have screwed up the dev environment. How does it go for you?

[Feriman22]

I tried to build it on my Raspberry Pi 4, but I got an error:

root@RPi4:/tmp/waifu2x-ncnn-vulkan/build# cmake ../src
CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
See also "/tmp/waifu2x-ncnn-vulkan/build/CMakeFiles/CMakeOutput.log".

The log file contains:

The system is: Linux - 5.10.78-7-osmc - aarch64

So I cannot build it on my device.