Can't compile the extension

[aliendisco]

Hi,

I'm using windows 11 64 and compile of godot-cpp fails for me.
I cloned repo and run scons in godot-cpp folder (commit c20ecea).
Maybe I'm doing something wrong. Files src\godot.cpp and others are there.

Regards,
Bostjan

Log:

scons: Reading SConscript files ...
Auto-detected 16 CPU cores available for build parallelism. Using 15 cores by default. You can override it with the -j argument.
Building for architecture x86_64 on platform windows
scons: done reading SConscript files.
scons: Building targets ...
g++ -o src\godot.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\godot.cpp
g++ -o src\classes\wrapped.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\classes\wrapped.cpp
g++ -o src\core\class_db.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\core\class_db.cpp
g++ -o src\core\error_macros.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\core\error_macros.cpp
g++ -o src\core\memory.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\core\memory.cpp
g++ -o src\core\method_bind.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\core\method_bind.cpp
g++ -o src\core\object.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\core\object.cpp
g++ -o src\variant\aabb.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\aabb.cpp
g++ -o src\variant\basis.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\basis.cpp
g++ -o src\variant\char_string.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\char_string.cpp
g++ -o src\variant\color.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\color.cpp
g++ -o src\variant\packed_arrays.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\packed_arrays.cpp
g++ -o src\variant\plane.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\plane.cpp
g++ -o src\variant\projection.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\projection.cpp
scons: *** [src\godot.windows.template_debug.x86_64.o] The system cannot find the file specified
g++ -o src\variant\quaternion.windows.template_debug.x86_64.o -c -std=c++17 -O2 -DDEBUG_ENABLED -DDEBUG_METHODS_ENABLED -Igodot-headers -Iinclude -Igen\include src\variant\quaternion.cpp
scons: *** [src\classes\wrapped.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\core\class_db.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\core\error_macros.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\core\memory.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\core\method_bind.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\core\object.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\aabb.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\basis.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\char_string.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\color.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\packed_arrays.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\plane.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\projection.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: *** [src\variant\quaternion.windows.template_debug.x86_64.o] The system cannot find the file specified
scons: building terminated because of errors.

[paddy-exe]

Hey @aliendisco which Godot Version are you using? Is it the correct one to the godot-cpp version?

[aliendisco]

I'm using 4.0 beta 8 win64.
Side question. Is the step 0 necessary? (Click on the green "Use this template" button to generate the repository for you)

[aliendisco]

I somehow managed to compile the extension. I didn't use windows for 10 years and something about my build setup was wrong.
Now the extension gets created but godot throws Error loading extesnsion when trying the Game project.
In game/bin/summator folder there are 2 files .a and .dll so this seems ok. I opened the game project with godot 4.0 beta 8.
Looks like I'm close but not quite there yet :)

Godot console log:

SCRIPT ERROR: Parse Error: Identifier "Summator" not declared in the current scope.
          at: GDScript::reload (res://main.gd:4)
ERROR: Can't open dynamic library: C:/Users/Bostjan/work/git/GDExtensionSummator/game/bin/summator/libgdsummator.windows.template_debug.x86_64.dll, error: Error 126: The specified module could not be found.
.
   at: (platform/windows/os_windows.cpp:293)
ERROR: GDExtension dynamic library not found: C:/Users/Bostjan/work/git/GDExtensionSummator/game/bin/summator/libgdsummator.windows.template_debug.x86_64.dll
   at: open_library (core/extension/native_extension.cpp:400)
ERROR: Failed loading resource: res://bin/summator.gdextension. Make sure resources have been imported by opening the project in the editor at least once.
   at: (core/io/resource_loader.cpp:214)

[paddy-exe]

Hmm from your latest error there seems to be an issue with the os_windows.cpp file. This is probably an upstream issue with Godot and godot-cpp
Btw for easier readability please put " ``` " these quotation markes before and behind the error log.

[aliendisco]

Thanks for response. I'll format the error log next time 👍

[paddy-exe]

@aliendisco Can you try again with the latest commit and the Beta 9 version? Also before compiling anything, delete the .godot folder inside the game directory.

[aliendisco]

I tried with the latest beta9 and I still get the same error. Even the lines number are the same which is kind of odd.

I noticed that the files created in bin folder are:
libgdsummator.windows.template_debug.x86_64.dll
liblibgdsummator.windows.template_debug.x86_64.a

The .a file starts with liblib. Is this correct?

[paddy-exe]

liblibgdsummator.windows.template_debug.x86_64.a

The .a file starts with liblib. Is this correct?

No, this doesn't look correct. Unfortunately I can't compile it myself but I haven't run into any errors on my Maschine and the CI either. Can you run the test project inside the godot-cpp repository?

[aliendisco]

Unfortunately it doesn't work either. Extension get created.

libgdexample.windows.template_debug.x86_64.dll
liblibgdexample.windows.template_debug.x86_64.a

Again liblib

Maybe I'm doing something wrong since I'm not very proficient with c++

  Can't open dynamic library: C:/Users/Bostjan/work/git/GDExtensionSummator/godot-cpp/test/demo/bin/libgdexample.windows.template_debug.x86_64.dll, error: Error 126: The specified module could not be found.
  .
  core/extension/gdextension.cpp:400 - GDExtension dynamic library not found: C:/Users/Bostjan/work/git/GDExtensionSummator/godot-cpp/test/demo/bin/libgdexample.windows.template_debug.x86_64.dll
  Failed loading resource: res://example.gdextension. Make sure resources have been imported by opening the project in the editor at least once.
  Transient parent has another exclusive child.
  Cannot get class 'Example'.
  Cannot get class 'ExampleMin'.
  In Object of type 'MissingNode': Attempt to connect nonexistent signal 'custom_signal' to callable 'Node(main.gd)::_on_Example_custom_signal'.

[aliendisco]

The last command when running scons is (there is liblib for file name):

g++ -shared -o demo\bin\libgdexample.windows.template_debug.x86_64.dll src\example.o src\register_types.o $( -LC:\Users\Bostjan\work\git\GDExtensionSummator\godot-cpp\bin $) -lgodot-cpp.windows.template_debug.x86_64 -Wl,--out-implib,demo\bin\liblibgdexample.windows.template_debug.x86_64.a

[aliendisco]

I tried building it on linux. It creates file: libgdsummator.linux.template_debug.x86_64.so

And it works!

Maybe only a windows build is broken, or I'm doing something wrong.

[paddy-exe]

@aliendisco In this case please file an issue on the Godot-cpp repository so that it can be tracked. (Also do link this issue here as well)
This seems to be an underlying API problem, not with this extension template then

[paddy-exe]

This should be fixed now with godotengine/godot-cpp#1203 being merged