Undefined reference to qInitResources

[Montjet]

Hi,
I am trying to port my C++ application to Android.
Unfortunately, I got error messages like:

C:\myGame\src\shaders/carMaterial.cpp:28: error: undefined reference to 'CarMaterial::qInitResources_materials()'

Android project files are made from CMakeList - without resources everything works fine.
My CMakeList contains these lines:

(...)
QT5_ADD_RESOURCES("./resources/qml.qrc")

SET(ALL_SOURCES
    ${__main_HDRSRC}
    (...)
    ${__resources_HDRSRC}   
)

IF(ANDROID)
    ADD_LIBRARY(myGame SHARED ${ALL_SOURCES})
ELSE()
    ADD_EXECUTABLE(myGame WIN32 ${ALL_SOURCES})
ENDIF()

(...)

I used toolchain from https://github.com/LaurentGomila/qt-android-cmake
And command to making project files:

cmake -DCMAKE_CXX_COMPILE_FEATURES=cxx_constexpr -DCMAKE_CXX_FLAGS="-std=gnu++14" -D ANDROID_NATIVE_API_LEVEL=android-19 -D CMAKE_TOOLCHAIN_FILE=../../qt-android-cmake/toolchain/android.toolchain.cmake -D CMAKE_MAKE_PROGRAM="%ANDROID_NDK%/prebuilt/windows-x86_64/bin/make.exe" -D QTDIR="%QTDIR%" -G "MinGW Makefiles" ..

Any idea how to solve this problem?

#edit
My OS: Windows 10

[ambershark]

@Montjet said in Undefined reference to qInitResources:

QT5_ADD_RESOURCES("./resources/qml.qrc")

This doesn't look right... You need something like:

qt5_add_resources(RC_SRC "resources/qml.qrc")
...
add_library(myGame SHARED ${ALL_SOURCES} ${RC_SRC})

That should fix your issue. Basically that error message is saying you didn't include your resources in the shared object file so they can't be loaded.

[Montjet]

It doesn't work :(

[Montjet]

Okay, I got it!
I moved every Q_INIT_RESOURCE(...) outside my namespace.
Now, it's linked and works but my android app is crashed, I think it's a different issue :{

[ambershark]

@Montjet Oh sorry I should have mentioned that. You can't have a namespace around Q_INIT_RESOURCES.

It's covered in the Qt docs on using resources in a shared object. I didn't think to mention it.

The crash is more than likely completely unrelated, so we'll consider this solved for now. Glad at least 1 part of your problem is over. :)