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QPSQL Plugin on Windows

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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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    • A Offline
      A Offline
      angelicaP
      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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      0
      • 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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          • A Offline
            A Offline
            angelicaP
            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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            • A Offline
              A Offline
              angelicaP
              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 ?

                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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                • A Offline
                  A Offline
                  angelicaP
                  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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                  • A Offline
                    A Offline
                    angelicaP
                    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 ?

                      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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                      • A Offline
                        A Offline
                        angelicaP
                        wrote on last edited by
                        #21

                        not yet, but i will give a try

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                        • A Offline
                          A Offline
                          angelicaP
                          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

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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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