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How do i use poppler lib in Qt quick application.

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

    Hi,

    I would avoid putting a library like that built for a different architecture/OS in such a generic path. You should store in an explicit dedicated folder.

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

    NIvil WilsonN 1 Reply Last reply
    1
    • NIvil WilsonN NIvil Wilson

      @jsulm
      after building poppler for android it shows the same errror
      skipping incompatible /usr/local/lib//libpoppler-qt5.so when searching for -lpoppler-qt5.

      jsulmJ Online
      jsulmJ Online
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #11

      @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

      skipping incompatible /usr/local/lib//libpoppler-qt5.so when searching for -lpoppler-qt5.

      This error clearly states that /usr/local/lib//libpoppler-qt5.so is not compatible with what you are building.
      Do

      file /usr/local/lib//libpoppler-qt5.so
      

      and post its output here.

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

      NIvil WilsonN 1 Reply Last reply
      0
      • jsulmJ jsulm

        @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

        skipping incompatible /usr/local/lib//libpoppler-qt5.so when searching for -lpoppler-qt5.

        This error clearly states that /usr/local/lib//libpoppler-qt5.so is not compatible with what you are building.
        Do

        file /usr/local/lib//libpoppler-qt5.so
        

        and post its output here.

        NIvil WilsonN Offline
        NIvil WilsonN Offline
        NIvil Wilson
        wrote on last edited by
        #12

        @jsulm said in How do i use poppler lib in Qt quick application.:

        file /usr/local/lib//libpoppler-qt5.so

        /usr/local/lib//libpoppler-qt5.so: symbolic link to libpoppler-qt5.so.1

        jsulmJ 1 Reply Last reply
        0
        • NIvil WilsonN NIvil Wilson

          @jsulm said in How do i use poppler lib in Qt quick application.:

          file /usr/local/lib//libpoppler-qt5.so

          /usr/local/lib//libpoppler-qt5.so: symbolic link to libpoppler-qt5.so.1

          jsulmJ Online
          jsulmJ Online
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #13

          @NIvil-Wilson Then do

          file /usr/local/lib//libpoppler-qt5.so.1
          

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

          NIvil WilsonN 1 Reply Last reply
          0
          • jsulmJ jsulm

            @NIvil-Wilson Then do

            file /usr/local/lib//libpoppler-qt5.so.1
            
            NIvil WilsonN Offline
            NIvil WilsonN Offline
            NIvil Wilson
            wrote on last edited by
            #14

            @jsulm
            sir,
            the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
            /usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

            SGaistS 1 Reply Last reply
            0
            • SGaistS SGaist

              Hi,

              I would avoid putting a library like that built for a different architecture/OS in such a generic path. You should store in an explicit dedicated folder.

              NIvil WilsonN Offline
              NIvil WilsonN Offline
              NIvil Wilson
              wrote on last edited by
              #15

              @SGaist
              sir, i tried that too but the same problem occurs

              1 Reply Last reply
              0
              • NIvil WilsonN NIvil Wilson

                @jsulm
                sir,
                the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
                /usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

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

                @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

                @jsulm
                sir,
                the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
                /usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

                Check that file then.

                Did you ensure that cmake is finding your cross-compiled version and not the one from your system ?

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

                NIvil WilsonN 1 Reply Last reply
                0
                • SGaistS SGaist

                  @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

                  @jsulm
                  sir,
                  the result for the command file /usr/local/lib//libpoppler-qt5.so.1 is
                  /usr/local/lib//libpoppler-qt5.so.1: symbolic link to libpoppler-qt5.so.1.27.0

                  Check that file then.

                  Did you ensure that cmake is finding your cross-compiled version and not the one from your system ?

                  NIvil WilsonN Offline
                  NIvil WilsonN Offline
                  NIvil Wilson
                  wrote on last edited by
                  #17

                  @SGaist
                  sir,
                  yes i ensured that the cmake is finding cross-compiled version and not the one from the system .
                  i stored the cross-compiled version in an explicit dedicated folder and the same message appears.
                  please help

                  1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #18

                    Did you check the architecture of your cross-compiled library ?

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

                    NIvil WilsonN 1 Reply Last reply
                    0
                    • SGaistS SGaist

                      Did you check the architecture of your cross-compiled library ?

                      NIvil WilsonN Offline
                      NIvil WilsonN Offline
                      NIvil Wilson
                      wrote on last edited by
                      #19

                      @SGaist
                      sir ,
                      the architecture of cross-compiled library is given below.

                      readelf -h libpoppler-qt5.so.1.27.0
                      ELF Header:
                      Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
                      Class: ELF64
                      Data: 2's complement, little endian
                      Version: 1 (current)
                      OS/ABI: UNIX - System V
                      ABI Version: 0
                      Type: DYN (Shared object file)
                      Machine: Advanced Micro Devices X86-64
                      Version: 0x1
                      Entry point address: 0x334f0
                      Start of program headers: 64 (bytes into file)
                      Start of section headers: 14323992 (bytes into file)
                      Flags: 0x0
                      Size of this header: 64 (bytes)
                      Size of program headers: 56 (bytes)
                      Number of program headers: 11
                      Size of section headers: 64 (bytes)
                      Number of section headers: 39
                      Section header string table index: 38

                      1 Reply Last reply
                      0
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #20

                        @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

                        Machine: Advanced Micro Devices X86-64

                        Is your device running on a x86_64 machine ?

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

                        NIvil WilsonN 1 Reply Last reply
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                        • SGaistS SGaist

                          @NIvil-Wilson said in How do i use poppler lib in Qt quick application.:

                          Machine: Advanced Micro Devices X86-64

                          Is your device running on a x86_64 machine ?

                          NIvil WilsonN Offline
                          NIvil WilsonN Offline
                          NIvil Wilson
                          wrote on last edited by NIvil Wilson
                          #21

                          @SGaist said in How do i use poppler lib in Qt quick application.:

                          x86_64

                          uname -a
                          Linux nivilwilsonp-desktop 5.8.0-48-generic #54~20.04.1-Ubuntu SMP Sat Mar 20 13:40:25 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

                          1 Reply Last reply
                          0
                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #22

                            Your desktop machine is.

                            I meant the target that runs Android. In any case, if it's ARM, libpoppler was not cross-compiled.

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

                            NIvil WilsonN 1 Reply Last reply
                            1
                            • SGaistS SGaist

                              Your desktop machine is.

                              I meant the target that runs Android. In any case, if it's ARM, libpoppler was not cross-compiled.

                              NIvil WilsonN Offline
                              NIvil WilsonN Offline
                              NIvil Wilson
                              wrote on last edited by
                              #23

                              @SGaist
                              sir,
                              the target device is ARM.could you give me instructions to cross compile libpoppler for ARM.

                              1 Reply Last reply
                              0
                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #24

                                What did you do to build poppler until now ?

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

                                NIvil WilsonN 1 Reply Last reply
                                0
                                • SGaistS SGaist

                                  What did you do to build poppler until now ?

                                  NIvil WilsonN Offline
                                  NIvil WilsonN Offline
                                  NIvil Wilson
                                  wrote on last edited by
                                  #25

                                  @SGaist
                                  sir,
                                  i used the settings given below to cross compile poppler library

                                  if(NOT DEFINED CMAKE_CROSSCOMPILING)
                                  set(CMAKE_CROSSCOMPILING "TRUE")
                                  endif()

                                  set(CMAKE_SYSTEM_NAME Android)
                                  set(CMAKE_SYSTEM_VERSION 21) # API level
                                  set(CMAKE_ANDROID_ARCH_ABI arm64-v8a)
                                  set(CMAKE_ANDROID_NDK /home/nivilwilsonp/Android/Sdk/ndk/21.3.6528147)
                                  set(CMAKE_ANDROID_STL_TYPE c++_shared)

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

                                    You might want to check here for how they build it for Androïd.

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

                                    NIvil WilsonN 1 Reply Last reply
                                    1
                                    • SGaistS SGaist

                                      You might want to check here for how they build it for Androïd.

                                      NIvil WilsonN Offline
                                      NIvil WilsonN Offline
                                      NIvil Wilson
                                      wrote on last edited by NIvil Wilson
                                      #27

                                      @SGaist
                                      sir, i tried to compile poppler for android arm64-v8a but it always compiled to "x86_64".

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                                      0
                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #28

                                        Did you follow the example I linked ?

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

                                        NIvil WilsonN 1 Reply Last reply
                                        0
                                        • SGaistS SGaist

                                          Did you follow the example I linked ?

                                          NIvil WilsonN Offline
                                          NIvil WilsonN Offline
                                          NIvil Wilson
                                          wrote on last edited by
                                          #29

                                          @SGaist
                                          sir, i tried it many times .i changed the architecture and tried many times but it only compile to x86_64 architecture only.I think this is related to configuration mistake that i made cmake compilation process. sorry for my bad english .google translate help me very much these days.

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