Category Archives: QT

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09
12
21
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Reducing the size of QT Android libraries

Posted by | Android, QT |

Tried to reduce the size of the QT Android libs by separating debug info with -separate-debug-info option and skipping the modules I do not use:

set "CMAKE_ROOT=E:\PFiles\cmake-3.21.3-windows-x86_64\bin"
set "NINJA_ROOT=E:\PFiles\ninja-win"
set "JDK_ROOT=C:\Program Files\Java\jdk1.8.0_301\bin"
set "MINGW_ROOT=E:\PFiles\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin"
set "PERL_ROOT=E:\PFiles\Strawberry\perl\bin"
     
set PATH=C:\WINDOWS\system32;C:\WINDOWS
set PATH=%CMAKE_ROOT%;%PATH%
set PATH=%NINJA_ROOT%;%PATH%
set PATH=%JDK_ROOT%;%PATH%
set PATH=%MINGW_ROOT%;%PATH%
set PATH=%PERL_ROOT%;%PATH%
set PATH=E:\PFiles\Python35;%PATH%
       
rem Check if the tools are in PATH
where gcc
where mingw32-make.exe
where perl.exe
where javac.exe
where python.exe
where cmake.exe
where ninja.exe
    
set "ANDROID_SDK_ROOT=C:\Users\D-Ef\AppData\Local\Android\Sdk"
set "ANDROID_NDK_PATH=C:\Users\D-Ef\AppData\Local\Android\Sdk\ndk\22.1.7171670"
set "ANDROID_BUILD_TOOLS_REVISION=31.0.0"
     
set MY_INSTALL_PATH=E:\Qt\Qt6.2.2\android
set QT_HOST_PATH=E:\Qt\Qt6.2.2\windows
    
configure.bat -platform win32-msvc -xplatform android-clang -prefix %MY_INSTALL_PATH% -qt-host-path %QT_HOST_PATH% ^
  -android-sdk %ANDROID_SDK_ROOT% -android-ndk %ANDROID_NDK_PATH% -android-ndk-platform android-23 -android-abis x86_64 ^
  -DQT_NO_EXCEPTIONS=1 -release -force-debug-info -separate-debug-info -opensource -confirm-license ^
  -skip qt3d -skip qt5compat -skip qtactiveqt -skip qtcharts -skip qtcoap -skip qtconnectivity ^
  -skip qtdatavis3d -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtnetworkauth -skip qtopcua ^
  -skip qtserialport -skip qtpositioning -skip qtquicktimeline -skip qtquick3d -skip qtremoteobjects ^
  -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtvirtualkeyboard -skip qtwayland -skip qtwebsockets ^
  -skip qtwebchannel -skip qtwebengine -skip qtwebview ^
  1> E:\temp\config-log12.txt 2>&1
(more…)
08
12
21
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Compiling QT6.2.2 example with new billing library for Android

Posted by | QT |

To prevent linker errors related to \Qt6.2.2\android\include\QtConcurrent\qtconcurrentrunbase.h

    void run() override
    {
        if (promise.isCanceled()) {
            promise.reportFinished();
            return;
        }
#ifndef QT_NO_EXCEPTIONS
        try {
#endif
            runFunctor();
#ifndef QT_NO_EXCEPTIONS
        } catch (QException &e) {
            promise.reportException(e);
        } catch (...) {
            promise.reportException(QUnhandledException(std::current_exception()));
        }
#endif
        promise.reportFinished();
    }
(more…)
06
12
21
 1 Comment

Configuring Android NDK version in QT Creator

Posted by | Android, QT |

When I uninstalled old NDK versions including 21.3.6528147, QT Creator displayed this:

(more…)
06
12
21
 1 Comment

Building QT 6.2.2 for Windows and Android

Posted by | QT |

I downloaded QT 6.2.2, verified its checksum:

certutil -hashfile qt-everywhere-src-6.2.2.zip MD5

Building for Windows with MSVC2019

Configured QT for building in the system Command Prompt (but not in MSVC Developer Command Prompt) as follows:

CALL "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" amd64
  
set "CMAKE_ROOT=E:\PFiles\cmake-3.21.3-windows-x86_64\bin"
set "NINJA_ROOT=E:\PFiles\ninja-win"
set "PERL_ROOT=E:\PFiles\Strawberry\perl\bin"
   
set PATH=%CMAKE_ROOT%;%PATH%
set PATH=%NINJA_ROOT%;%PATH%
set PATH=%PERL_ROOT%;%PATH%
set PATH=E:\PFiles\Python35;%PATH%
     
rem Check if the tools are in PATH
where perl.exe
where python.exe
where cmake.exe
where ninja.exe
 
set "MY_INSTALL_PATH=E:\Qt\Qt6.2.2\windows"
set CL=/MP
 
configure.bat -prefix %MY_INSTALL_PATH% -DQT_NO_EXCEPTIONS=1 -debug-and-release -force-debug-info -platform win32-msvc -opensource -confirm-license ^
-opengl es2 -I "C:\Program Files\OpenSSL\include" -L "C:\Program Files\OpenSSL\lib"
(more…)
05
10
21
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Building QT 6.2 for Android on Windows

Posted by | Android, QT, Windows |

First I built QT 6.2 for Windows then I installed JDK8, CMake 3.21.3 and configured QT as follows:

set "CMAKE_ROOT=E:\PFiles\cmake-3.21.3-windows-x86_64\bin"
set "NINJA_ROOT=E:\PFiles\ninja-win"
set "JDK_ROOT=C:\Program Files\Java\jdk1.8.0_301\bin"
set "MINGW_ROOT=E:\PFiles\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin"
set "PERL_ROOT=E:\PFiles\Strawberry\perl\bin"
 
set PATH=C:\WINDOWS\system32;C:\WINDOWS
set PATH=%CMAKE_ROOT%;%PATH%
set PATH=%NINJA_ROOT%;%PATH%
set PATH=%JDK_ROOT%;%PATH%
set PATH=%MINGW_ROOT%;%PATH%
set PATH=%PERL_ROOT%;%PATH%
set PATH=E:\PFiles\Python35;%PATH%
   
rem Check if the tools are in PATH
where gcc
where mingw32-make.exe
where perl.exe
where javac.exe
where python.exe
where cmake.exe
where ninja.exe

set "ANDROID_SDK_ROOT=C:\Users\D-Ef\AppData\Local\Android\Sdk"
set "ANDROID_NDK_PATH=C:\Users\D-Ef\AppData\Local\Android\Sdk\ndk\21.3.6528147"
rem See qtbase\mkspecs\android-clang\qmake.conf
set "ANDROID_NDK_PLATFORM=android-23"
rem see %ANDROID_SDK_ROOT%\build-tools folder
set "ANDROID_BUILD_TOOLS_REVISION=29.0.2"
 
set MY_INSTALL_PATH=E:\Qt\Qt6.2\android
set QT_HOST_PATH=E:\Qt\Qt6.2\windows

configure.bat -platform android-clang -prefix %MY_INSTALL_PATH% -android-sdk %ANDROID_SDK_ROOT% -android-ndk %ANDROID_NDK_PATH% -qt-host-path %QT_HOST_PATH% -android-abis x86_64 ^
  -DQT_NO_EXCEPTIONS=1 -release -force-debug-info -opensource -confirm-license
(more…)
29
09
21
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How I fixed “CMake configuration has no path to C++ compiler” in QT Creator

Posted by | QT |

CMake did not work and there was a yellow triangle at the left side of MSVC2019 kit name:

I fixed this buy changing C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat with C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsx86_arm64.bat.

(more…)
29
09
21
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Using QML_ELEMENT with CMake

Posted by | QML, QT |

There is an example of using QML_ELEMENT in qt5\qtdeclarative\examples\quick\scenegraph\openglunderqml and qt_add_qml_module in CMake:

qt_add_qml_module(openglunderqml
    URI OpenGLUnderQML
    VERSION 1.0
    QML_FILES main.qml
    RESOURCE_PREFIX /scenegraph/openglunderqml
    NO_RESOURCE_TARGET_PATH
)

In QML it imports the module:

import OpenGLUnderQML 1.0
(more…)
23
09
21
 3 Comments

Building QT 6.2 for Windows with MSVC2019

Posted by | Android, QT, Windows |

I cloned QT repository:

git clone --recursive https://code.qt.io/qt/qt5.git --branch v6.2.0
cd qt5

Looks like the command below is not required:

./init-repository --module-subset=all

because it prints:

Will not reinitialize already initialized repository (use -f to force)!
(more…)
14
09
21
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QtPurchasing uses deprecated AIDL billing library

Posted by | Android, QT |

Looks like QtPurchasing uses deprecated AIDL billing library and people say that it crashes on some devices. See https://developer.android.com/google/play/billing/deprecation-faq for more information. Probably they are going to update it in 5.15.7 and move it into examples in QT 6, so it is not clear exactly what will happen with it, we probably better wait QT 5.15.7 to be released.

(more…)
30
08
21
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Invokable constructor in QT

Posted by | QT |

In QT 5.15 I declare a class with an invokable constructor:

class TestClass : public QObject
{
    Q_OBJECT

public:

    Q_INVOKABLE TestClass(QString val) {}
};

Q_DECLARE_METATYPE(TestClass*)

register its type:

qRegisterMetaType<TestClass*>();
(more…)
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