Add ARM Linux (Raspberry Pi) Build tutorial/support

[ghost]

It would be great, considering someone on reddit already made it but it fails

[DolphinCube]

I'm sorry. Has anyone figured this out yet? I am trying to compile it as well...

[squbbish]

Hello! Just tried to compile it on my Debian ARM container and it returns this error

the other files compiles fine though, i also have no idea what causes this

[stxticOVFL]

This just means you didn't set up the Game symlink correctly. If your goal was to just build v5, adding RSDK_ONLY=1 should do the trick. (Also, AUTOBUILD=0 is implied.)

[coreybruce]

I still can't figure out to compile this, how do I compile and get the binary? I only get the .so file

[ccricers]

I was able to get it to compile on a Raspberry Pi based off this guide for compiling Sonic Mania to run on Raspberry Pi 4. I made changes in some of the steps because I wanted to try it on Raspberry Pi Zero 2W hardware, with Debian Bookworm 64 bit (no RetroPie).

Changes I made in these steps:

• Replaced -mtune=cortex-a72 with -mtune=cortex-a53 for the CFLAGS (you don't need to change unless using a Pi 3 or Zero 2W)
• Skip all the steps related to RetroPie and EmulationStation (the binary can be run from a desktop)
• /RSDKv5/RSDK/Graphics/Video.cpp may need to be edited (see below)

This creates the RSDKv5(U) binary to use your Data.rsdk file with.
Compiling All.c in the SonicMania/Objects/ folder will take a long time on this hardware.

Below is a possible issue when building - could this be worth opening a new issue for?

One problem I encountered- the Graphics/Video.cpp file produced an object file that gave me a linking error. I received the following error messages:

/usr/bin/ld: bin/obj/Linux/SDL2/RSDKv5/RSDKv5/RSDK/Graphics/Video.o: undefined reference to symbol 'ogg_stream_packetout'
/usr/bin/ld: /lib/aarch64-linux-gnu/libogg.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [Makefile:241: bin/Linux/SDL2/RSDKv5U] Error 1

The full motion videos (like the ones that play in the idle title screen) depend on this.

I do not know why specifically ogg_stream_packetout was undefined, even though the version of libogg I have has it defined in the headers. Could it related to a Debian OS specific build?

In the meantime I created a workaround by creating empty versions of the following functions:

bool32 RSDK::LoadVideo(...)
void RSDK::ProcessVideo()

And wrapped them in a #ifdef directive (for example _NO_VIDEO_PLAYBACK) which I also defined in the source and compiled that successfully.

Sonic Mania is very playable on the hardware. You just won't be able to see the video cutscenes with this work around (the title screen will just loop back to itself), not unless this could be solved too.

[ccricers]

Update to my previous post: Compiling new libraries for libogg and Theora separately fixed the video playback problem for me. I had to use these in place of the shared system libraries.

In the RSDKv5 root folder I created a new directory to place copies of: libogg.so, libtheora.so and libtheoradec.so, and modified the makefile to link to them.