4. run the program, and always show "error while loading shared libraries:libQt5SerialPort.so".

run the program, and always show "error while loading shared libraries:libQt5SerialPort.so".


  • I learn qt5.10.1 and write a program which use QTSerialPort, it work well.but I want to run this program on other ubuntu laotop, it always show "error while loading shared libraries:libQt5SerialPort.so".

    make
    g++ -Wl,-O1 -Wl,-rpath,/opt/Qt5.11.1/5.11.1/gcc_64/lib -o COMTool main.o mainwindow.o moc_mainwindow.o -L/opt/Qt5.11.1/5.11.1/gcc_64/lib -lQt5Widgets -lQt5Gui -lQt5SerialPort -lQt5Core -lGL -lpthread

    if i edit the pro file and add "CONFIG+=static", and then make:
    g++ -Wl,-O1 -o COMTool main.o mainwindow.o moc_mainwindow.o -L/opt/Qt5.11.1/5.11.1/gcc_64/lib -lQt5Widgets -lQt5Gui -lQt5SerialPort -lQt5Core -lGL -lpthread
    /usr/bin/ld: warning: libicui18n.so.56, needed by /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so, not found (try using -rpath or -rpath-link)
    /usr/bin/ld: warning: libicuuc.so.56, needed by /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so, not found (try using -rpath or -rpath-link)
    /usr/bin/ld: warning: libicudata.so.56, needed by /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so, not found (try using -rpath or -rpath-link)
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucol_open_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference tou_strToLower_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_getStandardName_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_compareNames_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucal_clone_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_getAlias_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to uenum_next_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_open_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucol_setAttribute_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference tou_strToUpper_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_setSubstChars_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_getTimeZoneDisplayName_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucal_openCountryTimeZones_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_fromUnicode_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_open_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_openTimeZones_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_countAliases_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference tou_errorName_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucal_inDaylightTime_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference touenum_close_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_getAvailableName_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_close_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucal_openTimeZoneIDEnumeration_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_getDefaultName_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucal_getDSTSavings_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_getDefaultTimeZone_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_toUnicode_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucal_setMillis_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucol_strcoll_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_close_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucol_close_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucol_getSortKey_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to ucnv_countAvailable_56' /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference toucnv_getMaxCharSize_56'
    /opt/Qt5.11.1/5.11.1/gcc_64/lib/libQt5Core.so: undefined reference to `ucal_get_56'
    collect2: error: ld returned 1 exit status

    i check the path /opt/Qt5.11.1/5.11.1/gcc_64/lib, and can find these three files:libicuuc.so.56,libicui18n.so.56,libicudata.so.5.

    so I am confused, need help.

    0 1 Replies
  • Moderators

    Use a deployment tool like linuxdeployqt.

    Normal static build won't help you as the plugins are still dynamic.

    (Z(:^

    3

  • @Samyang said in run the progrm, and always show "error while loading shared libraries:libQt5SerialPort.so".:

    run this program on other ubuntu laotop, it always show "error while loading shared libraries:libQt5SerialPort.so".

    Yes, as @sierdzio mentioned, you may want to be sure to deploy the required libraries into the other PC

    Upvote the answer(s) that helped you to solve the issue
    Use the "Topic Tools" button to mark your post as Solved
    Add screenshots via postimage.org

    2

  • Hi, Sierdzio and Rogina

    Thanks for your comment, and I download the linuxdeployqt tool, but i find a lot of lib miss error. I try to install some software,but the followed error still happen:
    abuser@ubuntu:/usr/local/release$ linuxdeployqt ./COMTool -appimage
    linuxdeployqt 4 (commit 8b3ded6), build 571 built on 2018-10-07 20:58:12 UTC
    FHS-like mode with PREFIX, fhsPrefix: "/usr/local"
    app-binary: "/usr/local/release/COMTool"
    appDirPath: "/usr"
    relativeBinPath: "local/bin/COMTool"
    ERROR: ldd outputLine: "libavcodec.so.53 => not found"
    ERROR: for binary: "/usr/local/java/jre1.8.0_101/lib/amd64/libavplugin-53.so"
    ERROR: Please ensure that all libraries can be found by ldd. Aborting.

    I do not know how to solve this libavcodec.so.53 missing.

    0
  • Moderators

    This should help:

    sudo apt install libavcodec-dev

    (Z(:^

    3

  • Thanks Sierdzio for help.

    but new error happened:

    labuser@ubuntu:/usr/local/release$ linuxdeployqt ./hello -appimage
    linuxdeployqt: error while loading shared libraries: libicui18n.so.56: cannot open shared object file: No such file or directory

    0
  • Moderators

    Maybe just install all Qt dependencies:

    sudo apt build-dep qt5-qmake

    (Z(:^

    2

  • thanks for help！

    0
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