The letter u?What exactly is the difference between rsdk5 and rsdk5u?
Windows has 4 separate versions of sonic mania, each uses a different game.dllThe letter u?
I don't know, sorry!! I can only find a post on gamebanana regarding an extractor version of it? Maybe that is it?
Found this....Windows has 4 separate versions of sonic mania, each uses a different game.dll

I already compiled them all aside from Linux and Android.Which fork are you trying to compile?

Your build is working.I just compiled the Linux build, but I cannot test it, so I'd need someone with linux to.
my other builds like soh probably work as well, just can't get any of them to run, and I think it's because I'm not using full linux.Your build is working.
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I also have compiled it by myself a few weeks ago, it worked just fine.
DISPLAY environment variable or did not install VcXsrv on the Windows side.DISPLAY environment variable add it to your .bashrc like described in other comments at the link. Else you have to set it each time (either with export or by prefixing the programm call to it, like DISPLAY=localhost:0 ./RSDKv5).I don’t use linux but I’ll gladly test the Windows executable on my Win7.I just compiled the Linux build, but I cannot test it, so I'd need someone with linux to. I think it's due to wsl as I get a segmentation fault error no matter what regardless of distro. I even tried the official soh app image for Linux, same error. I compiled soh for linux myself, and I got that error, so I think these all work, just can't test them with wsl. you do need at least GLEW installed or it won't load, plus you need to supply the data.rsdk:
here's the windows build.I don’t use linux but I’ll gladly test the Windows executable on my Win7.
Yes please do! I would make them myself but I'm not sure how to. I would like the regular sonic mania icons and banners (not the Plus version)They're cool, i very nearly used the second set u have but decided to mix it up a bit and the sound took all my energy! If anyone wants one made with those i could make another? Unless of course you share yours!
No probs, I will try get them done later, if not it will be tomorrow.Yes please do! I would make them myself but I'm not sure how to. I would like the regular sonic mania icons and banners (not the Plus version)

where does the data.rsdk go? that's the only thing not clear to me.I will make a tutorial on how to install Sonic Mania on Wii U
Sd/RSDK/v5/in here (iirc)where does the data.rsdk go? that's the only thing not clear to me.