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QPSQL Plugin on Windows

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  • ? Offline
    ? Offline
    A Former User
    wrote on last edited by
    #5

    thanks for input. if i could get around installation of VS it would be great.

    i made some progress. i found out that instead of running "nmake", this command could be replace by mingw32-make, for the mingw compiler. i run this and i got the following error:

    mingw32-make -f Makefile.Release all
    mingw32-make1: Entering directory ‘C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
    sqldrivers/psql’
    g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -W
    all -Wextra -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCE
    PTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I“C:\program” – I“files\postgresql\9.2\include” -I“C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include” -I“C:
    \Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql” -I“C:\Qt\Qt5.0.2\5.0.2\mingw47_32\in
    clude\QtSql\5.0.2” -I“C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2\QtSql”
    -I“C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtCore” -I”.moc\release_shared” -I”..
    ......\mkspecs\win32-g++” -o .obj\release_shared\qsql_psql.o ......\sql\driv
    ers\psql\qsql_psql.cpp
    ......\sql\drivers\psql\qsql_psql.cpp:58:22: fatal error: libpq-fe.h: No such
    file or directory
    compilation terminated.
    Makefile.Release:483: recipe for target ‘.obj/release_shared/qsql_psql.o’ failed

    mingw32-make1: *** [.obj/release_shared/qsql_psql.o] Error 1
    mingw32-make1: Leaving directory ‘C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
    qldrivers/psql’
    makefile:38: recipe for target ‘release-all’ failed
    mingw32-make: *** [release-all] Error 2

    any idea how to get over? the QPSQL driver is not loaded yet.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #6

      Search where is libqp-fe.h located and add that path either in INCLUDEPATH in psql.pro or when running qmake

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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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      • H Offline
        H Offline
        Hostel
        wrote on last edited by
        #7

        You have a spaces in includepath to pg(Program Files for example). From command line try this:
        @
        qmake "INCLUDEPATH+=$$quote("path to include") ...
        @

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        • ? Offline
          ? Offline
          A Former User
          wrote on last edited by
          #8

          i tried

          @@qmake "INCLUDEPATH+=$$quote("path to include") ...

          but the syntax might be incomplete. one " is missing, the one opened at "INCLUDEPATH...

          bq. Search where is libqp-fe.h located and add that path either in INCLUDEPATH in psql.pro or when running qmake

          i couldn't find any libqp-fe.h neither in the postgresql directory, nor in QT.

          any suggestion?

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          0
          • TheBadgerT Offline
            TheBadgerT Offline
            TheBadger
            wrote on last edited by
            #9

            [quote author="avpro" date="1370168642"]
            [quote]Search where is libqp-fe.h located and add that path either in INCLUDEPATH in psql.pro or when running qmake[/quote]

            i couldn't find any libqp-fe.h neither in the postgresql directory, nor in QT.

            any suggestion?
            [/quote]

            From what I have seen previously, the developer libraries does not come default with some PostgreSQL installs. If you want to just create an application that uses PostgreSQL I suggest that you download the developer pre-build dlls from PostgreSQL.

            Note the disclaimer on http://www.postgresql.org/download/windows/:
            "Advanced users can also download a "zip archive":http://www.enterprisedb.com/products-services-training/pgbindownload of the binaries, without the installer. This is not recommended for normal installations, it is intended for users who wish to include PostgreSQL as part of another application installer."

            Click on the "zip archive" link above and download the correct archive that you need.

            Also, the path should not contain back slashes (''), you should either escape them (replace '' with '\') or replace them with forward slashes ('/').

            [quote author="avpro" date="1370168642"]i tried
            [quote]qmake "INCLUDEPATH+=$$quote("path to include") ...[/quote]
            but the syntax might be incomplete. one " is missing, the one opened at "INCLUDEPATH...
            [/quote]

            Make sure that you have a quote (") after the command to close the quotes started before the INCLUDEPATH. Something in the line of:

            @qmake "INCLUDEPATH+=$$quote("path to include")"@

            Personally I extarct the binaries into a path without spaces (it helps a lot to simplify things) and then just replace the back- ('') with forward ('/') slashes in your original path, pointing to the extracted lib.

            Hope this helps


            Check out my SpellChecker Plugin for Qt Creator @ https://github.com/CJCombrink/SpellChecker-Plugin

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            • ? Offline
              ? Offline
              A Former User
              wrote on last edited by
              #10

              the libs are not standard installed with psql, but they could be installed if the custom installation option is selected, and than select them.

              i replaced the "" with "/".
              i tried to use the correct command line as described above, and error:

              "can't find .... \include."
              "missing closing parenthesis in function call"
              what's wrong?

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              • TheBadgerT Offline
                TheBadgerT Offline
                TheBadger
                wrote on last edited by
                #11

                what is the exact command that you executed? Something like the following should work:
                @

                qmake "INCLUDEPATH+=C:/psql/include" "LIBS+=C:/psql/lib/ms/libpq.lib" psql.pro
                @

                Or

                @

                qmake "INCLUDEPATH+=C:\psql\include" "LIBS+=C:\psql\lib\ms\libpq.lib" psql.pro
                @

                I have been using the second one for my PostgreSQL plugin for long now without any problems.


                Check out my SpellChecker Plugin for Qt Creator @ https://github.com/CJCombrink/SpellChecker-Plugin

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                • ? Offline
                  ? Offline
                  A Former User
                  wrote on last edited by
                  #12

                  thanks for helping me with your precious comments;
                  please have a look below on my input and my output:

                  C:\Qt\Qt5.0.2\5.0.2>cd src\qtbase\src\plugins\sqldrivers\psql

                  C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>qmake "INCLUDEPATH+=C
                  :\program files\postgresql\9.2\include" "LIBS+=C:\program files\postgresql
                  \9.2\lib\libpq.lib" psql.pro

                  C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>mingw32-make

                  mingw32-make -f Makefile.Release all
                  mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                  sqldrivers/psql'
                  g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -W
                  all -Wextra -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCE
                  PTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I"C:\program" -
                  I"files\postgresql\9.2\include" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include" -I"C:
                  \Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\in
                  clude\QtSql\5.0.2" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2\QtSql"
                  -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtCore" -I".moc\release_shared" -I"..
                  ......\mkspecs\win32-g++" -o .obj\release_shared\qsql_psql.o ......\sql\driv
                  ers\psql\qsql_psql.cpp
                  ......\sql\drivers\psql\qsql_psql.cpp:58:22: fatal error: libpq-fe.h: No such
                  file or directory
                  compilation terminated.
                  Makefile.Release:483: recipe for target '.obj/release_shared/qsql_psql.o' failed

                  mingw32-make[1]: *** [.obj/release_shared/qsql_psql.o] Error 1
                  mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                  qldrivers/psql'
                  makefile:38: recipe for target 'release-all' failed
                  mingw32-make: *** [release-all] Error 2

                  C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>

                  i think this is not much different from my previous post. SGaist suggested:
                  "Search where is libqp-fe.h located and add that path either in INCLUDEPATH in psql.pro or when running qmake"

                  and i said that "i couldn’t find any libqp-fe.h neither in the postgresql directory, nor in QT. "
                  i don't have this file.

                  i think worth to mentioned is the path ....C:\psql\lib\ms\libpq.lib" psql.pro. this folder "ms" is missing. the file libpq.lib is located directly in folder "lib". so i skipped this folder in my command.

                  any idea how to continue, and install this psql driver for QT?
                  thanks for your input.

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    If possible, reinstall postgresql in a path without spaces, that will make you life easier. Otherwise you have to give the old 8.3 name to avoid the space problem.

                    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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                    • TheBadgerT Offline
                      TheBadgerT Offline
                      TheBadger
                      wrote on last edited by
                      #14

                      Here is your problem:
                      [quote author="avpro" date="1370459887"]
                      C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>qmake "INCLUDEPATH+=C
                      :\program files\postgresql\9.2\include" "LIBS+=C:\program files\postgresql
                      \9.2\lib\libpq.lib" psql.pro
                      ...

                      -I"C:\program" -I"files\postgresql\9.2\include"

                      [/quote]
                      Because there is spaces in the path to your PostgreSQL install and you did not escape it properly (a user commented on how to handle spaces) the compiler splits your include path at the space and include the above 2 paths, instead of the one that you wanted.

                      So the solution is to either use this comment (read up on the "$$quote()":http://qt-project.org/doc/qt-4.8/qmake-function-reference.html#quote-string command):
                      [quote author="Hostel" date="1370131524"]You have a spaces in includepath to pg(Program Files for example). From command line try this:
                      @
                      qmake "INCLUDEPATH+=$$quote("path to include") ...
                      @
                      [/quote]

                      Or the one that I would follow, and the easiest one for future:

                      [quote author="SGaist" date="1370460739"]If possible, reinstall postgresql in a path without spaces, that will make you life easier. Otherwise you have to give the old 8.3 name to avoid the space problem.[/quote]


                      Check out my SpellChecker Plugin for Qt Creator @ https://github.com/CJCombrink/SpellChecker-Plugin

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                      • ? Offline
                        ? Offline
                        A Former User
                        wrote on last edited by
                        #15

                        I come back with more details:

                        bq.
                        If possible, reinstall postgresql in a path without spaces, that will make you life easier. Otherwise you have to give the old 8.3 name to avoid the space problem.

                        I reinstalled Posgresql in a folder without spaces.

                        i run the qmake command once again, and after the mingw32-make.
                        this is what it resulted:

                        C:\Qt\Qt5.0.2\5.0.2>cd src\qtbase\src\plugins\sqldrivers\psql

                        C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>qmake "INCLUDEPATH+=c
                        :\postgresql\9.2\include" "LIBS+=c:\postgresql\9.2\lib\libpq.lib" psql.pro

                        C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>mingw32-make
                        mingw32-make -f Makefile.Release all
                        mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                        sqldrivers/psql'
                        g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -W
                        all -Wextra -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCE
                        PTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I"C:\postgresql
                        \9.2\include" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include" -I"C:\Qt\Qt5.0.2\5.0.2
                        mingw47_32\include\QtSql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2"
                        -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2\QtSql" -I"C:\Qt\Qt5.0.2\5
                        .0.2\mingw47_32\include\QtCore" -I".moc\release_shared" -I"........\mkspecs\w
                        in32-g++" -o .obj\release_shared\qsql_psql.o ......\sql\drivers\psql\qsql_psql
                        .cpp
                        In file included from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/i686-w64-mingw32/bits/gthr-default.h:41:0,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/i686-w64-mingw32/bits/gthr.h:150,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/ext/atomicity.h:34,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/bits/basic_string.h:41,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/string:54,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/random:41,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/bits/stl_algo.h:67,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/algorithm:63,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qglobal.h:80
                        ,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qatomic.h:42
                        ,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qvariant.h:4
                        5,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtSql/qsqlresult.h:
                        45,
                        from ......\sql\drivers\psql\qsql_psql.h:45,
                        from ......\sql\drivers\psql\qsql_psql.cpp:42:
                        C:\postgresql\9.2\include/pthread.h:307:8: error: redefinition of 'struct timesp
                        ec'
                        In file included from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/../../../../i686-w64-mingw32/include/time.h:277:0,
                        from C:\postgresql\9.2\include/pthread.h:218,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/i686-w64-mingw32/bits/gthr-default.h:41,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/i686-w64-mingw32/bits/gthr.h:150,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/ext/atomicity.h:34,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/bits/basic_string.h:41,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/string:54,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/random:41,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/bits/stl_algo.h:67,
                        from c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/
                        4.7.2/include/c++/algorithm:63,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qglobal.h:80
                        ,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qatomic.h:42
                        ,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtCore/qvariant.h:4
                        5,
                        from C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include/QtSql/qsqlresult.h:
                        45,
                        from ......\sql\drivers\psql\qsql_psql.h:45,
                        from ......\sql\drivers\psql\qsql_psql.cpp:42:
                        c:\qt\qt5.0.2\tools\mingw\bin../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686
                        -w64-mingw32/include/sys/timeb.h:90:8: error: previous definition of 'struct tim
                        espec'
                        Makefile.Release:486: recipe for target '.obj/release_shared/qsql_psql.o' failed

                        mingw32-make[1]: *** [.obj/release_shared/qsql_psql.o] Error 1
                        mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                        qldrivers/psql'
                        makefile:38: recipe for target 'release-all' failed
                        mingw32-make: *** [release-all] Error 2

                        C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>

                        the error is: error: previous definition of 'struct timespec'

                        any idea how this could be resolved?

                        i found "here":https://bugreports.qt-project.org/browse/QTBUG-9032?actionOrder=desc this report, but i think is for linux.
                        any experience how to step over this error?

                        thank you all.

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                        • ? Offline
                          ? Offline
                          A Former User
                          wrote on last edited by
                          #16

                          hi,

                          i would like to restart the thread. in this moment i'm in the following point:

                          1. i reinstalled PostgreSQL in "C:\psql" to avoid any problems which might come up if Postgresql is installed in "space" separated path, like "C:\Program Files".
                          2. i copied libpq-fe.h, pg_config.h and postgres_ext.h from "c:\psql\include" to "C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql"
                          3. i followed the procedure described "here":http://qt-project.org/doc/qt-4.8/sql-driver.html#qpsql to create the QPSQL plugin
                          4. i replaced "nmake" with "mingw32-make" because i have the MinGw compiler.

                          Note: the commands are run from Qt's command line prepared by Qt installer.

                          this is the output:

                          C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>mingw32-make
                          mingw32-make
                          -f Makefile.Release all
                          mingw32-make[1]:
                          Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                          sqldrivers/psql'
                          g++ -Wl,-s
                          -shared -Wl,--out-implib,C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\plugins\sqldr
                          ivers\libqsqlpsql.a
                          -o ........\plugins\sqldrivers\qsqlpsql.dll .obj/release_
                          shared/main.o
                          .obj/release_shared/qsql_psql.o .obj/release_shared/moc_qsql_psql.
                          o -lpq -LC:\Qt\Qt5.0.2\5.0.2\mingw47_32\lib
                          -lQt5Sql -lQt5Core
                          c:/qt/qt5.0.2/tools/mingw/bin/../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686
                          -w64-mingw32/bin/ld.exe:
                          cannot find -lpq
                          collect2.exe:
                          error: ld returned 1 exit status
                          Makefile.Release:80:
                          recipe for target '........\plugins\sqldrivers\qsqlpsql.
                          dll' failed
                          mingw32-make[1]:
                          [........\plugins\sqldrivers\qsqlpsql.dll] Error 1
                          mingw32-make[1]:
                          Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                          qldrivers/psql'
                          makefile:38:
                          recipe for target 'release-all' failed
                          mingw32-make:
                          [release-all] Error 2

                          any idea what is wrong?
                          thank you.

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #17

                            Did you put somewhere the path to libpq ?

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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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                            • ? Offline
                              ? Offline
                              A Former User
                              wrote on last edited by
                              #18

                              you mean if I set up the user Environmental Variables?
                              yes, i did that too, for c:\psql\lib

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                              • ? Offline
                                ? Offline
                                A Former User
                                wrote on last edited by
                                #19

                                are you referring to your previous post
                                bq. Search where is libqp-fe.h located and add that path either in INCLUDEPATH in psql.pro or when running qmake

                                sorry, i'm not sure if i understand correctly: bq. Did you put somewhere the path to libpq ?
                                could you please try once again?
                                thanks.

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #20

                                  Sorry,
                                  Did you also do something like:
                                  @LIBS+=-LC:/psql/folder_where_libqp_can_be_found@

                                  in your pro file ?

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                                  • ? Offline
                                    ? Offline
                                    A Former User
                                    wrote on last edited by
                                    #21

                                    not yet, but i will give a try

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                                    • ? Offline
                                      ? Offline
                                      A Former User
                                      wrote on last edited by
                                      #22

                                      i integrated the LIBS+=-LC:/psql/folder_where_libqp_can_be_found
                                      in my psql.pro file like this:

                                      TARGET = qsqlpsql

                                      SOURCES = main.cpp
                                      OTHER_FILES += psql.json
                                      include(../../../sql/drivers/psql/qsql_psql.pri)

                                      PLUGIN_CLASS_NAME = QPSQLDriverPlugin
                                      include(../qsqldriverbase.pri)
                                      LIBS+=-LC:/psql/lib

                                      and got this output, surprisingly without errors; but the "driver not loaded" error still comes as soon as I test with
                                      @qDebug() << "Error = " << db.lastError().text();@

                                      C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>mingw32-make
                                      C:\Qt\Qt5.0.2\5.0.2\mingw47_32\bin\qmake.exe "INCLUDEPATH+=C:\psql\includeö ôL
                                      IBS+=c:\psql\lib\libpq.libö psql.pro" -o Makefile psql.pro
                                      mingw32-make -f Makefile.Release all
                                      mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                                      sqldrivers/psql'
                                      g++ -Wl,-s -shared -Wl,--out-implib,C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\plugins\sqldr
                                      ivers\libqsqlpsql.a -o ........\plugins\sqldrivers\qsqlpsql.dll .obj/release_
                                      shared/main.o .obj/release_shared/qsql_psql.o .obj/release_shared/moc_qsql_psql.
                                      o -Lc:\psql\lib -lpq -LC:/psql/lib -LC:\Qt\Qt5.0.2\5.0.2\mingw47_32\lib -lQt5Sq
                                      l -lQt5Core
                                      mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                                      qldrivers/psql'
                                      mingw32-make -f Makefile.Debug all
                                      mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                                      sqldrivers/psql'
                                      g++ -c -pipe -fno-keep-inline-dllexport -g -std=c++0x -fno-exceptions -frtti -Wa
                                      ll -Wextra -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEP
                                      TIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I"C:\psql\includeö" -I"ôLIBS+=
                                      c:\psql\lib\libpq.libö" -I"psql.pro" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include"
                                      -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_
                                      32\include\QtSql\5.0.2" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2\Qt
                                      Sql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtCore" -I".moc\debug_shared" -I"
                                      ........\mkspecs\win32-g++" -o .obj\debug_shared\qsql_psql.o ......\sql\dri
                                      vers\psql\qsql_psql.cpp
                                      cc1plus.exe: warning: psql.pro: not a directory [enabled by default]
                                      C:\Qt\Qt5.0.2\5.0.2\mingw47_32\bin\moc.exe -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_
                                      NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I.
                                      -I"C:\psql\includeö" -I"ôLIBS+=c:\psql\lib\libpq.libö" -I"psql.pro" -I"C:\Qt\Qt
                                      5.0.2\5.0.2\mingw47_32\include" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql"
                                      -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2" -I"C:\Qt\Qt5.0.2\5.0.2\m
                                      ingw47_32\include\QtSql\5.0.2\QtSql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\Q
                                      tCore" -I".moc\debug_shared" -I"........\mkspecs\win32-g++" -D__GNUC__ -DWIN3
                                      2 ......\sql\drivers\psql\qsql_psql.h -o .moc\debug_shared\moc_qsql_psql.cpp
                                      g++ -c -pipe -fno-keep-inline-dllexport -g -std=c++0x -fno-exceptions -frtti -Wa
                                      ll -Wextra -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEP
                                      TIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -I"C:\psql\includeö" -I"ôLIBS+=
                                      c:\psql\lib\libpq.libö" -I"psql.pro" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include"
                                      -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_
                                      32\include\QtSql\5.0.2" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtSql\5.0.2\Qt
                                      Sql" -I"C:\Qt\Qt5.0.2\5.0.2\mingw47_32\include\QtCore" -I".moc\debug_shared" -I"
                                      ........\mkspecs\win32-g++" -o .obj\debug_shared\moc_qsql_psql.o .moc\debug_s
                                      hared\moc_qsql_psql.cpp
                                      cc1plus.exe: warning: psql.pro: not a directory [enabled by default]
                                      g++ -shared -Wl,--out-implib,C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\plugins\sqldrivers\l
                                      ibqsqlpsqld.a -o ........\plugins\sqldrivers\qsqlpsqld.dll .obj/debug_shared/
                                      main.o .obj/debug_shared/qsql_psql.o .obj/debug_shared/moc_qsql_psql.o -Lc:\psq
                                      l\lib -lpq -LC:/psql/lib -LC:\Qt\Qt5.0.2\5.0.2\mingw47_32\lib -lQt5Sqld -lQt5Cor
                                      ed
                                      mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                                      qldrivers/psql'

                                      after that i put the LIBS+=-LC:/psql/folder_where_libqp_can_be_found
                                      in my psql.pro file like this:

                                      TARGET = qsqlpsql

                                      SOURCES = main.cpp
                                      OTHER_FILES += psql.json
                                      include(../../../sql/drivers/psql/qsql_psql.pri)
                                      LIBS+=-LC:/psql/lib

                                      PLUGIN_CLASS_NAME = QPSQLDriverPlugin
                                      include(../qsqldriverbase.pri)

                                      and got this output,

                                      C:\Qt\Qt5.0.2\5.0.2\Src\qtbase\src\plugins\sqldrivers\psql>mingw32-make
                                      C:\Qt\Qt5.0.2\5.0.2\mingw47_32\bin\qmake.exe "INCLUDEPATH+=C:\psql\includeö ôL
                                      IBS+=c:\psql\lib\libpq.libö psql.pro" -o Makefile psql.pro
                                      mingw32-make -f Makefile.Release all
                                      mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                                      sqldrivers/psql'
                                      mingw32-make[1]: Nothing to be done for 'all'.
                                      mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                                      qldrivers/psql'
                                      mingw32-make -f Makefile.Debug all
                                      mingw32-make[1]: Entering directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/
                                      sqldrivers/psql'
                                      mingw32-make[1]: Nothing to be done for 'all'.
                                      mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.0.2/5.0.2/Src/qtbase/src/plugins/s
                                      qldrivers/psql'

                                      but the "driver not loaded" error still comes as soon as I test with
                                      @qDebug() << "Error = " << db.lastError().text();@

                                      1. which is the correct output?
                                      2. i think i should obtain the qsqlpsql.dll file after this is correctly created, which should be copied to c:[Qt]\mingw47_32\plugins\sqldrivers\

                                      what's wrong?
                                      thanks for your input

                                      1 Reply Last reply
                                      0
                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #23

                                        I don't know if it's the copy/paste or something else, but you are having a lot of strange char in your mignw32-make output.

                                        And this line:
                                        @cc1plus.exe: warning: psql.pro: not a directory [enabled by default]@

                                        looks suspicious

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

                                        1 Reply Last reply
                                        0

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