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Forum Update on Monday, May 27th 2025

[SOLVED]MySQL library problem

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mysqldriverpluginsql
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  • C Offline
    C Offline
    cpuin
    wrote on last edited by cpuin
    #9

    Doesn't work after the deployment!!!

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #10

      Hi,

      Do you have the MySQL libraries installed in /opt ? (i.e. using macports) If not then the error message is normal.

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      C 1 Reply Last reply
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      • SGaistS SGaist

        Hi,

        Do you have the MySQL libraries installed in /opt ? (i.e. using macports) If not then the error message is normal.

        C Offline
        C Offline
        cpuin
        wrote on last edited by
        #11

        @SGaist

        I have installed MySQL from the installer.I don't know where is the opt/ (the path to it)

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #12

          Then you probably have the MySQL libraries in a path like /usr/local/mysql/. Right ?

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          • C Offline
            C Offline
            cpuin
            wrote on last edited by
            #13

            YES it is there

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by SGaist
              #14

              Then you have to do

              install_name_tool -change /opt/local/lib/mysql55/mysql/libmysqlclient.18.dylib /usr/local/mysql/PATH_TO_libmysqlclient.X.dylib PATH_TO_libqsqlmysql.dylib
              

              In any case, if you are not using it in your application, you can also ignore the message and remove the plugin from the bundle.

              [edit: added missing target SGaist]

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              • C Offline
                C Offline
                cpuin
                wrote on last edited by
                #15

                I deleted all plugins , left only libqsqlite.dylib
                The app doesn't work!

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #16

                  You have to give more details. "Doesn't work" doesn't give enough information to help you. Do you have any error message ?

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                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • M Offline
                    M Offline
                    mcosta
                    wrote on last edited by
                    #17

                    seems that macqtdeploy has some hardcoded PATH for MySQL and PostgreSQL.

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #18

                      @mcosta not it doesn't, macdeployqt parses the output of otool to get the dependencies of the libraries/plugins of Qt. AFAICT, the plugins are built with dependencies coming from MacPorts hence the libmysqlclient.18.dylib in /opt/local/lib/

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                      • SGaistS SGaist

                        You have to give more details. "Doesn't work" doesn't give enough information to help you. Do you have any error message ?

                        C Offline
                        C Offline
                        cpuin
                        wrote on last edited by
                        #19

                        @SGaist said:

                        install_name_tool -

                        LSOpenURLsWithRole() failed with error -10810 for the file

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                        • SGaistS SGaist

                          Then you have to do

                          install_name_tool -change /opt/local/lib/mysql55/mysql/libmysqlclient.18.dylib /usr/local/mysql/PATH_TO_libmysqlclient.X.dylib PATH_TO_libqsqlmysql.dylib
                          

                          In any case, if you are not using it in your application, you can also ignore the message and remove the plugin from the bundle.

                          [edit: added missing target SGaist]

                          C Offline
                          C Offline
                          cpuin
                          wrote on last edited by
                          #20

                          @SGaist said:

                          /opt/local/lib/mysql55/mysql/libmysqlclient.18.dylib

                          install_name_tool -change /opt/local/lib/mysql55/mysql/libmysqlclient.18.dylib /usr/local/mysql-5.6.25-osx10.8-x86_64/lib/libmysqlclient.18.dylib
                          Usage: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool [-change old new] ... [-rpath old new] ... [-add_rpath new] ... [-delete_rpath old] ... [-id name] input

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #21

                            Which version of OS X and Qt are you using ?

                            I've corrected the example line

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                            C 2 Replies Last reply
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                            • SGaistS SGaist

                              Which version of OS X and Qt are you using ?

                              I've corrected the example line

                              C Offline
                              C Offline
                              cpuin
                              wrote on last edited by
                              #22

                              @SGaist

                              OS X 10.10.3
                              QT 5.4

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                              • SGaistS SGaist

                                Which version of OS X and Qt are you using ?

                                I've corrected the example line

                                C Offline
                                C Offline
                                cpuin
                                wrote on last edited by cpuin
                                #23

                                @SGaist said:

                                PATH_TO_libqsqlmysql.dylib

                                install_name_tool -change /opt/local/lib/mysql55/mysql/libmysqlclient.18.dylib /usr/local/mysql-5.6.25-osx10.8-x86_64/lib/libmysqlclient.18.dylib Users/jorost/Qt5.4.2/5.4/clang_64/plugins/sqldrivers/libqsqlmysql.dylib
                                error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: can't open file: Users/jorost/Qt5.4.2/5.4/clang_64/plugins/sqldrivers/libqsqlmysql.dylib (No such file or directory)

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #24

                                  You're missing a slash before Users

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                                  • SGaistS SGaist

                                    You're missing a slash before Users

                                    C Offline
                                    C Offline
                                    cpuin
                                    wrote on last edited by
                                    #25

                                    @SGaist
                                    Now i got only Postgre error

                                    ERROR: no file at "/usr/local/lib/libpq.5.dylib"

                                    Does it mean that i have working mysql plugin?

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                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #26

                                      You should, unless the libmysqlclient is very different from the one Qt was built with.

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                                      • C Offline
                                        C Offline
                                        cpuin
                                        wrote on last edited by
                                        #27

                                        I have now mysql working, but i still can't have working app because of this:
                                        ERROR: no file at "/usr/local/lib/libpq.5.dylib"

                                        This is not very good approach: include all plug-ins w/out need of them.

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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #28

                                          That's the PostgreSQL plugin. Like I suggested before, just remove the plugins you don't need from your bundle.

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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