Building an Android app with Qmake on Windows

  • Hi,
    Did anyone succeed in building an Android app with Qmake on Windows? I have been trying for a while, by now. It works well with Qt Creator 5.7, and I've copy-pasted the command lines it calls. Here they are: (DOS-like Windows shell)

    set ANDROID_NDK_ROOT=C:\Users\aalex\src\SOFTEXT\Android\android-ndk\r12b
    set JAVA_HOME="C:\Users\aalex\src\SOFTEXT\Android\jdk1.7.0_55"
    set ANDROID_NDK_HOST="windows"
    C:\Users\aalex\src\SOFTEXT\Qt\5.7\android_armv7\bin\qmake.exe -spec android-g++ "CONFIG+=qtquickcompiler" -o Makefile
    "C:\Users\aalex\src\SOFTEXT\Android\Qt\5.7\android_armv7\bin\androiddeployqt.exe" --input C:\Users\aalex\src\softdev\Home\build-My_Project-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\My_Project\ --output C:\Users\aalex\src\softdev\Home\build-My_Project-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\android-build --deployment bundled --android-platform android-23 --jdk "C:\Users\aalex\src\SOFTEXT\Android\jdk1.7.0_55" --ant C:\Users\aalex\src\SOFTEXT\Android\apache-ant-1.9.7\bin\ant.bat

    Now, at the first step, when calling qmake.exe, it complains:

    Le chemin d`accès spécifié est introuvable.
    Project ERROR: You need to set the ANDROID_NDK_ROOT environment variable to point to your Android NDK.
    Could not read qmake configuration file C:/Users/aalex/src/SOFTEXT/Qt/5.7/android_armv7/mkspecs/android-g++/qmake.conf.
    Error processing project file:

    By searching online, I found a bug ticket saying that this message about ANDROID_NDK_ROOT not being set could be due to another variable left unset: ANDROID_NDK_HOST, though both are set here.

    How can I get rid of this error message and move forward with building the app? This error message could be more informative, for sure. Any help is much appreciated.
    Thank you.

  • @aalex said:

    Le chemin d`accès spécifié est introuvable.

    Note: this means that the file is not found.

  • I have no knowledge about this problem, but I notice the quotation marks in
    set ANDROID_NDK_HOST="windows"
    which have a "smell" of a problem. If the system doesn't expect and handle them, it could see the variable as unparsed and thus "unset"...

  • The quotation marks are fine.

  • I had to edit the variables in the Registry: no workaround worked so far.

    Here are some configuration variables:

    :: Variables. (please edit - match the paths to the SVN repositories)
    SET SOFTEXT_PATH=C:\Users\aquessy\src\SOFTEXT
    SET SOFTDEV_PATH=C:\Users\aquessy\src\softdev

    Then, I set the environment in the Registry:

    :: Set environment variables into the registry.
    SETX ANDROID_NDK_ROOT %SOFTEXT_PATH%\Android\android-ndk-r12b
    SETX JAVA_HOME %SOFTEXT_PATH%\Android\jdk1.7.0_55
    SETX ANDROID_NDK_HOST "windows-x86_64"
    :: Create a hard link, since the toolchain folder has been badly named, it seems
    IF EXIST %SOFTEXT_PATH%\Android\android-ndk-r12b\toolchains\arm-linux-androideabi-4.9\prebuilt\windows (
        ECHO "No need to create a hard link"
    ) ELSE (
        ECHO "Creating a hard link"
        MKLINK /J %SOFTEXT_PATH%\Android\android-ndk-r12b\toolchains\arm-linux-androideabi-4.9\prebuilt\windows %SOFTEXT_PATH%\Android\android-ndk-r12b\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64
    ECHO "The environment variables are now set in the registry. Please start a new command prompt so that they take effect."

    Next, launch a new command prompt, (a Windows terminal) and build the Android app:

    :: Call qmake, make and androiddeployqt
    PUSHD %SOFTDEV_PATH%\Home\HEMC_Control_App
    %SOFTEXT_PATH%\Qt\5.7\android_armv7\bin\qmake.exe -spec android-g++ "CONFIG+=qtquickcompiler" -o Makefile
    %SOFTEXT_PATH%\Qt\5.7\android_armv7\bin\androiddeployqt.exe --input %SOFTDEV_PATH%\Home\build-HEMC_Control_App-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\HEMC_Control_App\ --output %SOFTDEV_PATH%\Home\build-HEMC_Control_App-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\android-build --deployment bundled --android-platform android-23 --jdk %SOFTEXT_PATH%\Android\jdk1.7.0_55 --ant %SOFTEXT_PATH%\Android\apache-ant-1.9.7\bin\ant.bat

    Finally, we can cleanup the environment variables we set in the Registry:

    :: Delete environment variables from the registry.
    REG delete HKEY_CURRENT_USER\Environment /v JAVA_HOME

    It works!

    Now, is there a more standard way - or simpler way - to do this?

  • Hi,
    I've tried on another computer, and now, when make runs this command:

    C:\Users\aalex\src\softdev\Home\My_Project>C:\Users\aalex\src\SOFTEXT\Qt\5.7\android_armv7\bin\androiddeployqt.exe --input C:\Users\aalex\src\softdev\Home\build-My_Project-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\My_Project\ --output C:\Users\aalex\src\softdev\Home\build-My_Project-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\android-build --deployment bundled --android-platform android-23 --jdk C:\Users\aalex\src\SOFTEXT\Android\jdk1.7.0_55 --ant C:\Users\aalex\src\SOFTEXT\Android\apache-ant-1.9.7\bin\ant.bat 

    I get this error:

    Cannot read from input file: C:\Users\aalex\src\softdev\Home\build-My_Project-Android_for_armeabi_v7a_GCC_4_9_Qt_5_7_0-Release\My_Project\

    Does someone knows why this file has maybe not been generated?

  • The Qt and Android utilities are not installed on a system-wide standard path on that computer. So, I thought I might want to add these directories to the PATH environment variable.


    So, I set my PATH: (but it still doesn't work)

    :: Check if our bin path is already in PATH
    :: Add it if not. (permanently change it in the registry)
    :: See HKEY_CURRENT_USER/Environment/PATH
    SET PATH_ANDROID_BIN="%SOFTEXT_PATH%\Android\android-sdk\build-tools"
    SET PATH_MINGW_BIN="%SOFTEXT_PATH%\Android\mingw530_32\bin"
    SET PATH_QT_BIN="%SOFTEXT_PATH%\Qt\5.7\android_armv7\bin"
        ECHO "The path to the Android utils is a already in PATH"
        ECHO "PATH: %PATH%"
    ) else (
        ECHO "Adding the path to the Android utils to PATH"
        ECHO "Beware that the PATH cannot have more than 1024 characters."
        :: Note that the separator is ";"
        ECHO "New PATH: %PATH%"

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