ios and android support

[piiertho]

This enable to build on android and ios.
I was using Arguments on my side instead of the opts variable. Maybe you'd like to change this.
This is focus on arm and arm64 on android.
I did not added iphone sdk version as parameter, this can be an improvement.

[piiertho]

Errors in travis-ci for android, I correct this soon.

[karroffel]

Thanks for your contribution! 💙 I have no idea about Android or iOS stuff, but I left a comment on the CI setup.

[piiertho]

Hi ! You're right for ci. And my last commit does not speed up Travis. I'll revert it tomorrow.
I also should unify arch and android_abi arguments I think.

[piiertho]

Hi there, ready for review, I moved android_abi parameter to a composition of arch and bits.
Travis CI is ok. Maybe it should be a good idea to deploy godot-cpp binaries automatically using travis deploy ? This would avoid long ci build time for GDNative like we can have here.

[karroffel]

cc @BastiaanOlij

[undeton]

Hi! I saw you added android support but how i can build it. Can you make a tutorial ?

[piiertho]

Hi @undeton ,
There is few lines in the README on how to compile for android.
Do you mean a tutorial including building your own gdnative ?
I would probably write one as soon as I have time. For the moment you can get inspired of my team's fmod gdnative repo. The redme explain how to build on android and ios. Just be aware that for now, this repo is still using android-abi, you should use a composition of bits and arch to get the desired abi.

[BastiaanOlij]

@karroffel it would be good if we could entice endragor to have a look at iOS. I haven't used GDNative at all on iOS yet and he's got experience with it.

I need to find time to do some testing on Android. I'll ask Fredia if he can have a glance at this as well. He just moved a lot of the work to CMAKE for our Oculus Go/Quest module

[piiertho]

On iOS, I had to manually add dependencies of gdnative in xcode project after exporting, I will post a screenshot as soon as I get back to my computer.

EDIT :

Here is a screenshot for ios:

I had to add statics libraries to xcode project to make it working.
Don't know if it would be difficult to modulate ios export template so that it takes care of loaded GDNatives, and add statics libraries to xcode project.

[piiertho]

I guess we have a problem with the generated ios binairies, I got a 180 Mo static library, what is not compatible with app store.

Edit : Since 3.1.1 I cannot run app on iOS as soon as there is a gdnative. I opened an issue on engine repo : godotengine/godot#30518

[piiertho]

Hi ! What about the merge of this request ? We have no news for iOS, but pr is ok on Android and travis ci is ok. I'd like it to be merged so that I can use main repo for my projects, like this one. @BastiaanOlij said it is ok for android but we have no news of iOS. It seems 3.1.1 is causing bugs when linking that was not present in 3.1, si I think it is not related to gdnative repo but to Godot itself.

[ryancheung]

This PR is great. GDNative should support compiling to static libraries for some platforms that not allowed to use dynamic libs, like iOS and game console platforms.