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Qt 5.13.0 - Build postgres driver for android

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  • N Offline
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    NickV
    wrote on 19 Jul 2019, 06:47 last edited by
    #1

    Hello, i would like to build the postgres driver for android. Does anyone knows the way that i can do that? When i was used qt 5.9.6 i have followed the following instructions: https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android

    This instructions not work in Qt 5.13.0. Any suggestions?

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      NickV
      wrote on 19 Jul 2019, 07:07 last edited by
      #2

      When i am doing the steps of the https://wiki.qt.io/Build_Qt_5_PostgreSQL_Plugin_for_Android i am getting the following error:
      Project ERROR: Library 'psql' is not defined.

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        SGaist
        Lifetime Qt Champion
        wrote on 19 Jul 2019, 14:06 last edited by
        #3

        Hi,

        The build instructions have changed. See the Qt documentation for that and adapt the guide to them.

        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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          NickV
          wrote on 22 Jul 2019, 07:59 last edited by
          #4

          WIth this instructions i am getting the following error:

          android-ndk-r19c/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: /usr/lib/x86_64-linux-gnu/libpq.so: incompatible target
          

          Any idea?

          J 1 Reply Last reply 22 Jul 2019, 10:05
          0
          • N NickV
            22 Jul 2019, 07:59

            WIth this instructions i am getting the following error:

            android-ndk-r19c/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: /usr/lib/x86_64-linux-gnu/libpq.so: incompatible target
            

            Any idea?

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            jsulm
            Lifetime Qt Champion
            wrote on 22 Jul 2019, 10:05 last edited by
            #5

            @NickV said in Qt 5.13.0 - Build postgres driver for android:

            /usr/lib/x86_64-linux-gnu/libpq.so

            This lib was built for x86_64, not ARM. You need this lib in your sysroot for ARM.

            https://forum.qt.io/topic/113070/qt-code-of-conduct

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              NickV
              wrote on 22 Jul 2019, 14:07 last edited by
              #6

              Is there a way to build postgres from source for arm?
              Any instructions will be perfect!

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                SGaist
                Lifetime Qt Champion
                wrote on 22 Jul 2019, 19:10 last edited by
                #7

                It's explained in the Wiki page you are using as reference.

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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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                  NickV
                  wrote on 23 Jul 2019, 06:55 last edited by
                  #8

                  When i follow these instruction the libpq.so that produced is not for arm architecture but for x86_64. Maybe there is a problem with the ndk. I don't know for sure.

                  J 1 Reply Last reply 23 Jul 2019, 06:59
                  0
                  • N NickV
                    23 Jul 2019, 06:55

                    When i follow these instruction the libpq.so that produced is not for arm architecture but for x86_64. Maybe there is a problem with the ndk. I don't know for sure.

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                    jsulm
                    Lifetime Qt Champion
                    wrote on 23 Jul 2019, 06:59 last edited by
                    #9

                    @NickV This sounds like you're building for x86_64. Can you show the steps you're executing to build it?

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      NickV
                      wrote on 23 Jul 2019, 07:12 last edited by NickV
                      #10

                      @jsulm
                      export ANDROID_NDK_ROOT="/<path-to-ndk>/android-ndk-r15c"
                      SR="$ANDROID_NDK_ROOT/platforms/android-21/arch-arm"
                      BR="$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-"

                      and then cd to postgres folder
                      STRIP="$BR"strip RANLIB="$BR"ranlib OBJDUMP="$BR"objdump AR="$BR"ar CC="$BR"gcc CFLAGS=--sysroot=$SR CPP="$BR"cpp CPPFLAGS=$CFLAGS ./configure --prefix=$SR/usr --host=arm-linux-androideabi --target=arm-linux-androideabi --build="$CHOST" --without-readline --with-openssl --with-includes=/<path-to-openssl>/openssl-1.0.2n/include --with-libs=/<path-to-openssl>/openssl-1.0.2n

                      sed -e 's/lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)/lib$(NAME)$(DLSUFFIX)/g' -i src/Makefile.shlib
                      sed -e 's/lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)/lib$(NAME)$(DLSUFFIX)/g' -i src/Makefile.shlib

                      make -C src/interfaces/libpq

                      WIth this instructions i made it to create a libpq.so form arm architecture but it is for 32bit not for 64bit. If i use android ndk r18b then the libpq.so that produced is for x86_64 architecture.

                      J 1 Reply Last reply 23 Jul 2019, 07:20
                      0
                      • N NickV
                        23 Jul 2019, 07:12

                        @jsulm
                        export ANDROID_NDK_ROOT="/<path-to-ndk>/android-ndk-r15c"
                        SR="$ANDROID_NDK_ROOT/platforms/android-21/arch-arm"
                        BR="$ANDROID_NDK_ROOT/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-"

                        and then cd to postgres folder
                        STRIP="$BR"strip RANLIB="$BR"ranlib OBJDUMP="$BR"objdump AR="$BR"ar CC="$BR"gcc CFLAGS=--sysroot=$SR CPP="$BR"cpp CPPFLAGS=$CFLAGS ./configure --prefix=$SR/usr --host=arm-linux-androideabi --target=arm-linux-androideabi --build="$CHOST" --without-readline --with-openssl --with-includes=/<path-to-openssl>/openssl-1.0.2n/include --with-libs=/<path-to-openssl>/openssl-1.0.2n

                        sed -e 's/lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)/lib$(NAME)$(DLSUFFIX)/g' -i src/Makefile.shlib
                        sed -e 's/lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)/lib$(NAME)$(DLSUFFIX)/g' -i src/Makefile.shlib

                        make -C src/interfaces/libpq

                        WIth this instructions i made it to create a libpq.so form arm architecture but it is for 32bit not for 64bit. If i use android ndk r18b then the libpq.so that produced is for x86_64 architecture.

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                        jsulm
                        Lifetime Qt Champion
                        wrote on 23 Jul 2019, 07:20 last edited by
                        #11

                        @NickV How do you build with r18b?

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          NickV
                          wrote on 23 Jul 2019, 07:20 last edited by
                          #12

                          @jsulm
                          I am doing exactly the same thing but i use
                          export ANDROID_NDK_ROOT="/<path-to-ndk>/android-ndk-r18b"

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                            SGaist
                            Lifetime Qt Champion
                            wrote on 24 Jul 2019, 19:46 last edited by
                            #13

                            Since you are building for 5.13 you should change to NDK r19 at least.

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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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                              NickV
                              wrote on 25 Jul 2019, 06:27 last edited by NickV
                              #14

                              @SGaist
                              I've also tried with android ndk r19c. Still having problems.

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                                NickV
                                wrote on 25 Jul 2019, 11:13 last edited by
                                #15

                                Does postgres supports android 64 bit cpu architectures?

                                J 1 Reply Last reply 25 Jul 2019, 11:16
                                0
                                • N NickV
                                  25 Jul 2019, 11:13

                                  Does postgres supports android 64 bit cpu architectures?

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                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on 25 Jul 2019, 11:16 last edited by
                                  #16

                                  @NickV This is something you should ask postgres developers

                                  https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on 26 Jul 2019, 18:58 last edited by
                                    #17

                                    It should be since it's available on Debian for arm64. However there might be a flag to set somewhere.

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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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                                      Nogood
                                      wrote on 13 Apr 2021, 14:31 last edited by
                                      #18

                                      Hi, has anyone managed to put together a psql android plugin for qt qml app? My application is not connecting to postgres database on another machine.

                                      S 1 Reply Last reply 13 Apr 2021, 15:25
                                      0
                                      • N Nogood
                                        13 Apr 2021, 14:31

                                        Hi, has anyone managed to put together a psql android plugin for qt qml app? My application is not connecting to postgres database on another machine.

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                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on 13 Apr 2021, 15:25 last edited by
                                        #19

                                        @Nogood said in Qt 5.13.0 - Build postgres driver for android:

                                        Hi, has anyone managed to put together a psql android plugin for qt qml app? My application is not connecting to postgres database on another machine.

                                        Hi and welcome to devnet,

                                        Did you follow the guide @NickV used ?
                                        If not, what did you do ?
                                        If you did, what error message do you get ?
                                        Also, are you sure you can access that database remotely from another computer ?
                                        Did you start your application with the QT_DEBUG_PLUGINS environment variable set to 1 in order to have more information ?

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

                                        N 1 Reply Last reply 23 Apr 2021, 09:20
                                        0
                                        • S SGaist
                                          13 Apr 2021, 15:25

                                          @Nogood said in Qt 5.13.0 - Build postgres driver for android:

                                          Hi, has anyone managed to put together a psql android plugin for qt qml app? My application is not connecting to postgres database on another machine.

                                          Hi and welcome to devnet,

                                          Did you follow the guide @NickV used ?
                                          If not, what did you do ?
                                          If you did, what error message do you get ?
                                          Also, are you sure you can access that database remotely from another computer ?
                                          Did you start your application with the QT_DEBUG_PLUGINS environment variable set to 1 in order to have more information ?

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                                          Nogood
                                          wrote on 23 Apr 2021, 09:20 last edited by
                                          #20

                                          @SGaist said in Qt 5.13.0 - Build postgres driver for android:

                                          guide

                                          Yes, i used guide. But I didn't find the arm-linux-androideabi-gcc file.

                                          everything is fine with the database, the program works well on windows.

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