SuperTuxKart porting

[AntiDroid]

@lduboeuf Thank you very much. He at least has a start there and maybe if I can get it to at least complain about compiling I can figure it out.

[AntiDroid]

UPDATE Feb 28, 2021

I am making progress. You can find the repo here

There are still some issues. Maybe one of the people here that actually know what they are doing can spot what I am doing wrong. I also have an open dialog with the STK developers in github.

Clickable Arm64 build

This one builds completely and creates a clickable. I tried installing it on my OnePlus 6T which is running a GSI from a few months ago. It is the only arm64 device I have and is not a stable device.

I get

Fatal error: /home/phablet/Downloads/supertuxkart_1.2.0-ubports_arm64.click fail
WARNING:root:signiture check failed, but installing anyway as requested
Cannot install /home/phablet/Downloads/supertuxkart_1.2.0-ubports_arm64.click F

There may be more to the message but UT_tweak tools output window does not wrap and has no side scroll I could find.

Clickable Armhf build

Armhf builds all the object files and only fails at the last step creating the executable which fails at

Linking CXX executable bin/supertuxkart
lib/angelscript/projects/cmake/libangelscript.a(as_callfunc.cpp.o): In function `CallSystemFunction(int, asCContext*)':
as_callfunc.cpp:(.text+0x1e4): undefined reference to `CallSystemFunctionNative(asCContext*, asCScriptFunction*, void*, unsigned long*, void*, unsigned long long&, void*)'

I get the feeling

as_callfunc.cpp.o

should be a call to

as_callfunc_arm.cpp.o

and that means it is not detecting the architecture correctly?? It appears to be related to Anglescript (Again https://github.com/supertuxkart/stk-code/issues/2411 https://github.com/supertuxkart/stk-code/pull/2195 https://github.com/supertuxkart/stk-code/issues/2569 and others) and compiling for arm. Again I am not sure how I would do this without modifying STKs code. I would rather do it from the clickable build files.

Clickable desktop build

I can build all the object files and even build an executable but it fails at the very end with.

Installing /home/Projects/stk/stk-code/ubuntu_touch/manifest.json
Installing /home/Projects/stk/stk-code/ubuntu_touch/supertuxkart.apparmor
Installing /home/Projects/stk/stk-code/ubuntu_touch/supertuxkart.desktop
Installing /home/Projects/stk/stk-code/ubuntu_touch/icon.png
Successfully built package in './supertuxkart_1.2.0-ubports_amd64.click'.
/home/Projects/stk/stk-code/ubuntu_touch/build/x86_64-linux-gnu/app/supertuxkart_1.2.0-ubports_amd64.click: pass
non-network local connections being added to access control list
Mounting device home to /home/.clickable/home
[error  ] FileManager: Could not find file 'supertuxkart.git'in any standard location (esp. ../data).
[error  ] FileManager: Last location checked '/./share/supertuxkart/data/'.
[fatal  ] FileManager: Set $SUPERTUXKART_DATADIR to point to the data directory.
Command exited with non-zero exit status 1, see above for details. This is most likely not a problem with Clickable.

The solution is here I think https://forum.freegamedev.net/viewtopic.php?f=18&t=7595 but I would like to implement it from the clickable build files rather than modifying anything in the STK code or having to do it manually but I have not figured that one out yet.

[AntiDroid]

This post is deleted!

[AntiDroid]

Alpha testing

---

I have successfully built an Arm64 click package of SuperTuxKart. I am unable to test it due to my only arm64 device thinking it is armhf.

From talking with the people over at STK it may work out of the box without any other changes since this version uses sdl2 to interface with the touchscreen and sensors. :crossed_fingers:

If you would like to test it out you can download it here.
https://github.com/Intrinsically-Sublime/stk-code/releases/tag/V1.2.0-alpha

Download it directly on the phone to the downloads directory.

Then from the command line.

cd ./Downloads
sudo pkcon install-local ./supertuxkart_1.2.0-ubports_arm64.click --allow-untrusted

I honestly do not know if it will do anything at all.

[lduboeuf]

@antidroid congrats for your successful build ;-). Don't have an arm64 too, so can't test, maybe announce it on Telegram ?

[kugiigi]

@lduboeuf I tested it on my Xperia X and it won't open
The error is

WARNING **: Unable to exec `supertuxkart` in `/opt/click.ubuntu.com/.click/users/phablet/supertuxkart`: No such file or directory

Looks like you're executing on the wrong directory. The binary is at /opt/click.ubuntu.com/supertuxkart/current/bin/ in the current installation.

[kugiigi]

@kugiigi I tried to manually execute the binary and gets the error below

error while loading shared libraries: libvorbisfile.so.3: cannot open shared object file: No such file or directory

[aarontheissueguy]

@antidroid
Here are my logs.
http://paste.ubuntu.com/p/79GpQcg54G/

[AntiDroid]

@kugiigi Thank you. I will look into this. I should probably build it with the debug flag enabled so we get a little more information.

Just so I understand. The click installed but fails to run or it fails to install?

EDIT: Reread your message and understand now

[AntiDroid]

@aarontheissueguy Thanks

[AntiDroid]

@kugiigi said in SuperTuxKart porting:

I tried to manually execute the binary and gets the error below

Where did you find the binary installed? Was it where it was supposed to be?

/opt/click.ubuntu.com/.click/users/phablet/supertuxkart

[kugiigi]

@antidroid Well it seems that click files are located in multiple directories, most likely just symlinks. First is at /opt/click.ubuntu.com/supertuxkart/current/bin but it also exists at /opt/click.ubuntu.com/.click/users/phablet/supertuxkart/bin. The latter seems to be the path used in the desktop files of click apps. I honestly have no idea where your app is wrong. I compared it to other working apps and it seems correct.

[abmyii]

@AntiDroid You need to package the required libraries in the click. This is how I do it for Neverball: https://gitlab.com/abmyii/neverball-touch/-/blob/master/clickable.json#L43-58

The method I use to identify them is just trial-and-error. I assume it runs on your device because you have the libraries already installed, whereas most devices don't have those libraries preinstalled.

@kugiigi What you could try is to use the libraries packaged with Neverball when running the game manually, since it should have most (if not all) of the required libraries. To do that, run:

export LD_LIBRARY_PATH=/opt/click.ubuntu.com/neverball.abmyii/current/lib/aarch64-linux-gnu:/opt/click.ubuntu.com/*.abmyii/current/lib/*

And then run SuperTuxKart manually as you did before.

[kugiigi]

@abmyii I tried that but now it's looking for libopenal.so.1

[abmyii]

@kugiigi If you are up for it, you can just manually download all the required libs until it works - there shouldn't be too many more TBH. The process is a bit finicky, but doable. I can explain how to, if you are interested.

Unfortunately I don't have an arm64 device, else I would have tried it myself.

[AntiDroid]

@abmyii Thank you very much you have saved me having to figure out how to add the libs. I had looked through UBports development guide for dependencies but wasn't sure exactly how to go about it. I now see with your information it is this section.

@kugiigi It is easy for me to add the libs but difficult to figure out which ones it needs without a working device.

No pressure on anyone to test this, it can wait until I have a working device. People can fork my repo and build it themselves too. I have included build instructions in the ubuntu_touch folder README. I have just updated the repo with the current clickable.json incuding the known needed libs so far.

[Trischi]

@antidroid I had to install libvorbisfile3 and libopenal1.

Now this appears:

[error ] FileManager: Could not find file 'supertuxkart.git'in any standard location (esp. ../data).
[error ] FileManager: Last location checked '/./share/supertuxkart/data/'.
[fatal ] FileManager: Set $SUPERTUXKART_DATADIR to point to the data directory.

[AntiDroid]

@trischi Thank you, I will look into it.