User:Joger/Building Qt Multimedia for Android

About this page

On this page I describe how I build Qt Multimedia for Android on Windows.

My build setup

• OS: Windows 11 with dev drive mounted on D: (Using a dev drive makes builds faster when using Windows Defender antivirus)
• Qt source tree: D:\qt\qt6\
• Build directory containing all builds: D:\qt\build\
• Main (host) build for dev branch: D:\qt\build\dev\
• Visual Studio 2022 (MSVC)
• Don't have perl in path as it can cause hard to understand build failures
• Have cmake in path

Setting up Qt Creator for Android

1. Install Qt Creator with Android option
2. In Creator preferences, install Adoptium JDK (C:\Program Files\Eclipse Adoptium\jdk-17.0.10.7-hotspot)
3. Android SDK location: C:\dev\android
4. Select Android NDK 26.1.10909125 and make default
5. Oppenssl location: C:\dev\android\android_openssl
6. Verify Android settings:

1. Add Android device for ABI x86_64, OS Version 13.0 ("Tiramisu") (SDK 33)

Building Qt for Android on Windows

Main build root Android: D:\qt\build\android

Configure Qt for Android in build root using host build

cmake -DQT_BUILD_SUBMODULES=QtMultimedia -DQT_HOST_PATH=D:/qt/build/dev/qtbase -DQT_BUILD_TESTS_BY_DEFAULT=OFF -DQT_BUILD_TESTS=ON -DANDROID_PLATFORM=android-33 -DQT_USE_TARGET_ANDROID_BUILD_DIR=TRUE -DQT_QMAKE_TARGET_MKSPEC=android-clang -DANDROID_SDK_ROOT=C:/dev/android -DANDROID_NDK_ROOT=C:/dev/android/ndk/26.1.10909125 -DANDROID_ABI=x86_64 -DQT_BUILD_EXAMPLES=FALSE -DCMAKE_BUILD_TYPE=Debug -DINPUT_developer_build=yes --fresh -G Ninja D:/qt/qt6 & ninja

Main build directory for Qt Multimedia on Android: D:\qt\build\androidmultimedia Configure Qt Multimedia for Android

cmake-DCMAKE_TOOLCHAIN_FILE=D:\qt\build\android\qtbase\lib\cmake\qt6\qt.toolchain.cmake -G Ninja  -DQT_USE_ORIGINAL_COMPILER=ON -DQT_BUILD_TESTS=ON -DQT_BUILD_TESTS_BY_DEFAULT=OFF D:/qt/qt6/qtmultimedia & ninja

Importing Qt Multimedia build into QtCreator

1. Open QtMultimedia CMakeLists.txt from D:\qt\qt6\qtmultimedia
2. Deselect all kits
3. Import build from D:\qt\build\androidmultimedia
   • This creates a Android Qt 6.8.0 (android) Clang x86_64 kit
   • Configure is run automatically again
4. Select a test to be built (tst_qmediadevices) and choose a corresponding emulator in project build settings for Android kit
5. Build target tst_qmediadevices
6. Observe error message:

19:15:12: The process "C:\Program Files\CMake\bin\cmake.exe" exited normally.

19:15:12: Starting: "D:\qt\build\dev\qtbase\bin\androiddeployqt.exe" --input D:/qt/build/androidmultimedia/tests/auto/unit/multimedia/qmediadevices/android-tst_qmediadevices-deployment-settings.json --output D:/qt/build/androidmultimedia/tests/auto/unit/multimedia/qmediadevices/android-build --android-platform android-33 --jdk "C:/Program Files/Eclipse Adoptium/jdk-17.0.10.7-hotspot" --gradle

Cannot find application binary in build dir D:/qt/build/androidmultimedia/tests/auto/unit/multimedia/qmediadevices/android-build//libs/x86_64/libtst_qmediadevices_x86_64.so.

19:15:12: The process "D:\qt\build\dev\qtbase\bin\androiddeployqt.exe" exited with code 2.

Error while building/deploying project QtMultimedia (kit: Android Qt 6.8.0 (android) Clang x86_64)

When executing step "Build Android APK"

19:15:12: Elapsed time: 01:05.