Android build doesn't work

[luiscesjr]

Whenever I try loading a scene that has Terrain3D node on it, it just won't load, no errors thrown in the output nor the debugger, can't really say what's going on, appart from a build error when exporting to my test device:

 No suitable library found for GDExtension: res://addons/terrain_3d/terrain.gdextension. Possible feature flags for your platform: mobile, android, etc2, astc, arm64, arm64-v8a, template, debug, template_debug
  Cannot erase nonexistent section "params".

I've added the missing flags on my feature export side, but that did not change anything.

But actually looking at the libraries list:

macos.debug = "bin/libterrain.macos.debug.framework"
macos.release = "bin/libterrain.macos.release.framework"
windows.debug.x86_64 = "bin/libterrain.windows.debug.x86_64.dll"
windows.release.x86_64 = "bin/libterrain.windows.release.x86_64.dll"
linux.debug.x86_64 = "bin/libterrain.linux.debug.x86_64.so"
linux.release.x86_64 = "bin/libterrain.linux.release.x86_64.so"
linux.debug.arm64 = "bin/libterrain.linux.debug.arm64.so"
linux.release.arm64 = "bin/libterrain.linux.release.arm64.so"
linux.debug.rv64 = "bin/libterrain.linux.debug.rv64.so"
linux.release.rv64 = "bin/libterrain.linux.release.rv64.so"

It's not really supposed to work on mobiles?

I've seen the #137 Issue, but that seemed to at least load?

[TokisanGames]

Android is completely experimental, and you'll need to help and experiment to get it working.

terrain.gdextension loads android in the current version. I haven't rebuild android since then. Try this:
https://github.com/TokisanGames/Terrain3D/blob/main/project/addons/terrain_3d/terrain.gdextension

[luiscesjr]

Thanks for the fast reply, I want to help as much as I can.

Unfortunately adding those new lines, I get a

Can't open file from path 'res://addons/terrain_3d/libterrain.android.debug.arm64.so'.

Like it did not compile, am I on the wrong version? I'm using latest terrain3d and godot 4.1.1

[TokisanGames]

Does this file exist on your filesystem?

[TokisanGames]

No it doesn't. The path is wrong. Add '/bin' in front of the filename in terrain.gdextension.

[luiscesjr]

Oops I also did not notice that.

But still having the right path:

android.debug.arm64 = "bin/libterrain.android.debug.arm64.so"
android.release.arm64 = "bin/libterrain.android.release.arm64.so"

It throws the same error, I only have two binaries at the bin folder.

[TokisanGames]

Those are clearly windows libraries. The android libraries are only in this experimental android build. Download this artifact and replace terrain.gdextension.

https://github.com/TokisanGames/Terrain3D/actions/runs/6006189731

[Saul2022]

for me i get this errors and replaced terrain gdextension with the other file you provided

[TokisanGames]

@Saul2022 I need console messages. Gui errors are not helpful. When the files exist and the path names are correct, does Godot load the android library? Is the plugin available in the project settings/plugins? Can it be enabled?

[TokisanGames]

New android build w/ fixed terrain.gdextension paths and other adjustments.

https://github.com/TokisanGames/Terrain3D/actions/runs/6026697901

[Saul2022]

The plugin appears in the plugins tab, but can't be enabled this is the errors console gives and happens when trying to activate the plugin , also the scene is the one of the project has.

Edit: on a new created project the errors happen too though it seem the particular error is at the editor thing

[TokisanGames]

That is not the console. I want the text logs. Either from the console window or from the log files. I don't know where they are on android.

Maybe?
https://ask.godotengine.org/130310/how-to-get-log-file-for-android?show=130310#q130310

@luiscesjr what's your status?

[luiscesjr]

Upgrading leaves me with the same errors as @Saul2022, I was looking for your changes to see where could it be.

The error is in the editor, before even exporting, so no logs for now.

 res://addons/terrain_3d/editor/editor.gd:11 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:16 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:27 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:52 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:59 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:128 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:130 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:133 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:134 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:135 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:136 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:137 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:143 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:147 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:151 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:152 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:168 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:188 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:200 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:201 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
Could not find version of build tools that matches Target SDK, using 30.0.3 - **Android warning, ignore.**
  Can't resolve symbol terrain_3d_init, error: "Error 127: Não foi possível encontrar o procedimento especificado.".
  core/extension/gdextension.cpp:464 - GDExtension entry point 'terrain_3d_init' not found in library res/addons/terrain_3d/bin/libterrain.windows.debug.x86_64.dll
  Failed loading resource: res://addons/terrain_3d/terrain.gdextension. Make sure resources have been imported by opening the project in the editor at least once.
  res://addons/terrain_3d/editor/editor.gd:11 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:16 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:27 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:52 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:59 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:128 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:130 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:133 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:134 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:135 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:136 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:137 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:143 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:147 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:151 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:152 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:168 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:188 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:200 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:201 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  Cannot get class 'Terrain3DSurface'.
  Cannot get class 'Terrain3DStorage'.
  Cannot get class 'Terrain3D'.
  Cannot get class 'Terrain3DSurface'.
  Cannot get class 'Terrain3DStorage'.
  Cannot get class 'Terrain3D'.

I know a lot of the errors here lie in the fact that I can't enable the plugin because of some other errors. If that makes any sense.

Maybe the dll from the latest windows binary does not match the changes from current branch?

I also had a look at the #75388 issue from Godot, but the workarounds there did not help me.

[TokisanGames]

This has nothing to do with Godot issue #75388.

Hmm, there's nothing before this? That's the absolute first line in the log/console?

This says it is attempting to load the windows library, which will never work on an android. What type of device are you using?

Can't resolve symbol terrain_3d_init, error: "Error 127: Não foi possível encontrar o procedimento especificado.". core/extension/gdextension.cpp:464 - GDExtension entry point 'terrain_3d_init' not found in library res/addons/terrain_3d/bin/libterrain.windows.debug.x86_64.dll

I found an error in the registration files which I fixed. I'm changing the android lines to:

android.debug.arm64 = "res://addons/terrain_3d/bin/libterrain.android.debug.arm64.so"
android.release.arm64 = "res://addons/terrain_3d/bin/libterrain.android.release.arm64.so"

Please try this build, look at the logs and if it's still attempting to load the windows library, remove it and the non-android lines from terrain.gdextension. Also tell me your exact hardware device. If it fails, copy all logs here again.
https://github.com/TokisanGames/Terrain3D/actions/runs/6030110189

[luiscesjr]

No, as I said, this happens in the Godot editor, even before exporting, these logs have nothing to do with the Android build because I can't even export.

The steps here are Open the editor > on project load it throws all these errors.

And it keeps spamming this:

As I stated earlier, I thought it had to do with #75388 because it seems to not even load the scripts, which judging by these lines:

core/extension/gdextension.cpp:464 - GDExtension entry point 'terrain_3d_init' not found in library res/addons/terrain_3d/bin/libterrain.windows.debug.x86_64.dll
Failed loading resource: res://addons/terrain_3d/terrain.gdextension. Make sure resources have been imported by opening the project in the editor at least once.

It seems to be the main culprit? Somehow the release dll is not working with these changes.
To further back this, if I go back, download the release terrain3d_0.8.2-alpha_gd4.1.1_win64.zip, the errors are gone, and I
can use the Godot editor normally.

The console log is still the same:

Can't resolve symbol terrain_3d_init, error: "Error 127: Não foi possível encontrar o procedimento especificado.".
  core/extension/gdextension.cpp:464 - GDExtension entry point 'terrain_3d_init' not found in library res/addons/terrain_3d/bin/libterrain.windows.debug.x86_64.dll
  Failed loading resource: res://addons/terrain_3d/terrain.gdextension. Make sure resources have been imported by opening the project in the editor at least once.
  res://addons/terrain_3d/editor/components/surface_list.gd:130 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:131 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:133 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:254 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:222 - Parse Error: Identifier "Terrain3DSurface" not declared in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:246 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:249 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/components/surface_list.gd:249 - Parse Error: Identifier "Terrain3DSurface" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:4 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:4 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:49 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:49 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:29 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:29 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:30 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:30 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:32 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:32 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:33 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:33 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:34 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:34 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:35 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:35 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:36 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:36 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:37 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:37 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:39 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:39 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:40 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:40 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:42 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:42 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:43 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/toolbar.gd:43 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:171 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:175 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:41 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:44 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:49 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:177 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:179 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/tool_settings.gd:181 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:28 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:78 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:78 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:73 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:86 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:91 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:97 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:101 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:110 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:117 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:126 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:160 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:178 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:182 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:184 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:186 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:191 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:193 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:195 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:197 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:199 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:201 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:203 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:207 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:209 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:211 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:215 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/components/ui.gd:217 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:11 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:16 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:27 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:52 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:59 - Parse Error: Could not find type "Terrain3D" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:128 - Parse Error: Could not find type "Terrain3DEditor" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:130 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:133 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:134 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:135 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:136 - Parse Error: Identifier "Terrain3DStorage" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:137 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:143 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:147 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:151 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:152 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:168 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:188 - Parse Error: Could not find type "Terrain3DSurface" in the current scope.
  res://addons/terrain_3d/editor/editor.gd:200 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/editor/editor.gd:201 - Parse Error: Identifier "Terrain3DEditor" not declared in the current scope.
  res://addons/terrain_3d/tools/importer.gd:2 - Parse Error: Could not find base class "Terrain3D".

[TokisanGames]

Now I understand. That android build has only the android libraries in it. You need both the windows and the android libraries in the bin folder on your computer so you can open it in windows, and it can export to android. Any of the recent Windows libraries can be placed in the bin directory. Here's the latest build. Keep the current android build with the terrain.gdextension file, and copy the windows dlls from this artifact. https://github.com/TokisanGames/Terrain3D/actions/runs/6003166159

Later the Build All job on github will make the full release package. That will come with all libraries for windows/linux/macos/android in one download.