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Qt 5.11.3 works fine, but Qt 5.12.1 throws LINKER errors

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  • Christian EhrlicherC Online
    Christian EhrlicherC Online
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #8

    Maybe the function is not properly exported? Maybe take a look at the exported function declarations with Dependency Walker - make sure the export string (_imp?registerNetLibraryQML@NetLibrary@@YAXXZ) shown there looks exactly the same.

    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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    M 2 Replies Last reply
    2
    • Christian EhrlicherC Christian Ehrlicher

      Maybe the function is not properly exported? Maybe take a look at the exported function declarations with Dependency Walker - make sure the export string (_imp?registerNetLibraryQML@NetLibrary@@YAXXZ) shown there looks exactly the same.

      M Offline
      M Offline
      m3g1dd
      wrote on last edited by
      #9

      @Christian-Ehrlicher

      Good idea :) I'm going to employ dependency walker tools

      1 Reply Last reply
      0
      • Christian EhrlicherC Christian Ehrlicher

        Maybe the function is not properly exported? Maybe take a look at the exported function declarations with Dependency Walker - make sure the export string (_imp?registerNetLibraryQML@NetLibrary@@YAXXZ) shown there looks exactly the same.

        M Offline
        M Offline
        m3g1dd
        wrote on last edited by
        #10

        @Christian-Ehrlicher

        I double-checked my netlib DLL with dependency walker, I can see the export:

        0_1552303570459_5fc43f6a-1a49-4307-b5b4-156b5e8b1a6c-image.png

        Also, on my main.obj I can see the import:

        0_1552303780368_7fcee3d7-1947-477a-8391-4ff3c54e5ef9-image.png

        hskoglundH 1 Reply Last reply
        0
        • Christian EhrlicherC Online
          Christian EhrlicherC Online
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #11

          I've no idea - does the linker really links against the import lib? Are other functions from within the library are resolved?

          Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
          Visit the Qt Academy at https://academy.qt.io/catalog

          M 1 Reply Last reply
          0
          • M m3g1dd

            @Christian-Ehrlicher

            I double-checked my netlib DLL with dependency walker, I can see the export:

            0_1552303570459_5fc43f6a-1a49-4307-b5b4-156b5e8b1a6c-image.png

            Also, on my main.obj I can see the import:

            0_1552303780368_7fcee3d7-1947-477a-8391-4ff3c54e5ef9-image.png

            hskoglundH Online
            hskoglundH Online
            hskoglund
            wrote on last edited by
            #12

            @m3g1dd While checking the netlib DLL is a good thing for avoiding failures when launching your application.exe (when the .dll is loaded), here the error occurs not when running the app, but when linking it, So the .dll is immaterial, you could instead check the netlib.lib file, that's what the linker is reading.

            Dependency Walker isn't well suited for reading .lib files, but there's a tool in MSVC2017 called dumpbin, easiest is to start it from a Developer Command Prompt for VS 2017. To get the complete information, use the /linkermember switch, say like this:

            dumpbin /linkermember netlib.lib
            

            Then check in the list if that symbol is exported, it should be 2 of them, one __imp?registerNetLibraryQML@NetLibrary@@YAXXZ and one ?registerNetLibraryQML@NetLibrary@@YAXXZ

            M 1 Reply Last reply
            3
            • hskoglundH hskoglund

              @m3g1dd While checking the netlib DLL is a good thing for avoiding failures when launching your application.exe (when the .dll is loaded), here the error occurs not when running the app, but when linking it, So the .dll is immaterial, you could instead check the netlib.lib file, that's what the linker is reading.

              Dependency Walker isn't well suited for reading .lib files, but there's a tool in MSVC2017 called dumpbin, easiest is to start it from a Developer Command Prompt for VS 2017. To get the complete information, use the /linkermember switch, say like this:

              dumpbin /linkermember netlib.lib
              

              Then check in the list if that symbol is exported, it should be 2 of them, one __imp?registerNetLibraryQML@NetLibrary@@YAXXZ and one ?registerNetLibraryQML@NetLibrary@@YAXXZ

              M Offline
              M Offline
              m3g1dd
              wrote on last edited by m3g1dd
              #13

              @hskoglund

              Thanks! I run the command on Developer Command Prompt for VS 2017 and I get the results, I can see both ?registerNetLibraryQML@NetLibrary@@YAXXZ and __imp_?registerNetLibraryQML@NetLibrary@@YAXXZ expressions:

              C:\Users\me\repos\build-application-Desktop_Qt_5_12_1_MSVC2017_64bit-Debug\netlib\debug>dumpbin /linkermember netlib.lib
              Microsoft (R) COFF/PE Dumper Version 14.15.26730.0
              Copyright (C) Microsoft Corporation.  All rights reserved.
              
              
              Dump of file netlib.lib
              
              File Type: LIBRARY
              
              Archive member name at 8: /
              FFFFFFFF time/date
                       uid
                       gid
                     0 mode
                   C3D size
              correct header end
              
                  69 public symbols
              
                   190A __IMPORT_DESCRIPTOR_netlib
                   1B30 __NULL_IMPORT_DESCRIPTOR
                   1C66 netlib_NULL_THUNK_DATA
                   2878 ?registerNetLibraryQML@NetLibrary@@YAXXZ
                   2878 __imp_?registerNetLibraryQML@NetLibrary@@YAXXZ
                   2E0C ?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                   2E0C __imp_?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                   2E8A ?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                   2E8A __imp_?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                   1DBE ??0Netlib@@QEAA@XZ
                   1DBE __imp_??0Netlib@@QEAA@XZ
                   1E2C ??1Netlib@@UEAA@XZ
                   1E2C __imp_??1Netlib@@UEAA@XZ
                   1F06 ?agentDiscover@Netlib@@QEAAXXZ
                   1F06 __imp_?agentDiscover@Netlib@@QEAAXXZ
                   1FFA ?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                   1FFA __imp_?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                   210E ?discoveryInProgress@Netlib@@QEBA_NXZ
                   210E __imp_?discoveryInProgress@Netlib@@QEBA_NXZ
                   28FC ?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                   28FC __imp_?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                   2C7E ?slicingInProgress@Netlib@@QEBA_NXZ
                   2C7E __imp_?slicingInProgress@Netlib@@QEBA_NXZ
                   2A82 ?setSlicingInProgress@Netlib@@QEAAX_N@Z
                   2A82 __imp_?setSlicingInProgress@Netlib@@QEAAX_N@Z
                   2530 ?layerID@Netlib@@QEBA?AVQString@@XZ
                   2530 __imp_?layerID@Netlib@@QEBA?AVQString@@XZ
                   2982 ?setLayerID@Netlib@@QEAAXVQString@@@Z
                   2982 __imp_?setLayerID@Netlib@@QEAAXVQString@@@Z
                   2B82 ?slicingDone@Netlib@@QEBA_NXZ
                   2B82 __imp_?slicingDone@Netlib@@QEBA_NXZ
                   2A04 ?setSlicingDone@Netlib@@QEAAX_N@Z
                   2A04 __imp_?setSlicingDone@Netlib@@QEAAX_N@Z
                   24BE ?init@Netlib@@AEAAXXZ
                   24BE __imp_?init@Netlib@@AEAAXXZ
                   22AA ?getOsName@Netlib@@AEAA?AVQString@@XZ
                   22AA __imp_?getOsName@Netlib@@AEAA?AVQString@@XZ
                   2090 ?discoveryFinished@Netlib@@AEAAXXZ
                   2090 __imp_?discoveryFinished@Netlib@@AEAAXXZ
                   2B06 ?slicerFinished@Netlib@@AEAAXXZ
                   2B06 __imp_?slicerFinished@Netlib@@AEAAXXZ
                   1F80 ?agentLogReady@Netlib@@AEAAXXZ
                   1F80 __imp_?agentLogReady@Netlib@@AEAAXXZ
                   2430 ?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                   2430 __imp_?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                   232C ?getSlicerProgress@Netlib@@AEAAXXZ
                   232C __imp_?getSlicerProgress@Netlib@@AEAAXXZ
                   23AA ?getSlicerProgressFinished@Netlib@@AEAAXXZ
                   23AA __imp_?getSlicerProgressFinished@Netlib@@AEAAXXZ
                   1E9A __imp_??_7Netlib@@6B@
                   2636 ?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                   2636 __imp_?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                   2752 ?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                   2752 __imp_?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                   26BE ?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                   26BE __imp_?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                   27D2 ?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                   27D2 __imp_?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                   2190 ?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                   2190 __imp_?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                   221A ?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                   221A __imp_?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                   2CFE ?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                   2CFE __imp_?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                   25B0 ?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                   25B0 __imp_?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                   2BFC ?slicingDoneChanged@Netlib@@QEAAX_N@Z
                   2BFC __imp_?slicingDoneChanged@Netlib@@QEAAX_N@Z
                   2D86 __imp_?staticMetaObject@Netlib@@2UQMetaObject@@B
              
              Archive member name at C82: /
              FFFFFFFF time/date
                       uid
                       gid
                     0 mode
                   C4B size
              correct header end
              
                  37 offsets
              
                      1     190A
                      2     1B30
                      3     1C66
                      4     2878
                      5     2E0C
                      6     2E8A
                      7     1DBE
                      8     1E2C
                      9     1F06
                      A     1FFA
                      B     210E
                      C     28FC
                      D     2C7E
                      E     2A82
                      F     2530
                     10     2982
                     11     2B82
                     12     2A04
                     13     24BE
                     14     22AA
                     15     2090
                     16     2B06
                     17     1F80
                     18     2430
                     19     232C
                     1A     23AA
                     1B     1E9A
                     1C     2636
                     1D     2752
                     1E     26BE
                     1F     27D2
                     20     2190
                     21     221A
                     22     2CFE
                     23     25B0
                     24     2BFC
                     25     2D86
              
                  69 public symbols
              
                      7 ??0Netlib@@QEAA@XZ
                      8 ??1Netlib@@UEAA@XZ
                      9 ?agentDiscover@Netlib@@QEAAXXZ
                     17 ?agentLogReady@Netlib@@AEAAXXZ
                      A ?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                     15 ?discoveryFinished@Netlib@@AEAAXXZ
                      B ?discoveryInProgress@Netlib@@QEBA_NXZ
                     20 ?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                     21 ?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                     14 ?getOsName@Netlib@@AEAA?AVQString@@XZ
                     19 ?getSlicerProgress@Netlib@@AEAAXXZ
                     1A ?getSlicerProgressFinished@Netlib@@AEAAXXZ
                     18 ?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                     13 ?init@Netlib@@AEAAXXZ
                      F ?layerID@Netlib@@QEBA?AVQString@@XZ
                     23 ?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                     1C ?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                     1E ?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                     1D ?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                     1F ?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                      4 ?registerNetLibraryQML@NetLibrary@@YAXXZ
                      C ?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                     10 ?setLayerID@Netlib@@QEAAXVQString@@@Z
                     12 ?setSlicingDone@Netlib@@QEAAX_N@Z
                      E ?setSlicingInProgress@Netlib@@QEAAX_N@Z
                     16 ?slicerFinished@Netlib@@AEAAXXZ
                     11 ?slicingDone@Netlib@@QEBA_NXZ
                     24 ?slicingDoneChanged@Netlib@@QEAAX_N@Z
                      D ?slicingInProgress@Netlib@@QEBA_NXZ
                     22 ?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                      5 ?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                      6 ?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                      1 __IMPORT_DESCRIPTOR_netlib
                      2 __NULL_IMPORT_DESCRIPTOR
                      7 __imp_??0Netlib@@QEAA@XZ
                      8 __imp_??1Netlib@@UEAA@XZ
                     1B __imp_??_7Netlib@@6B@
                      9 __imp_?agentDiscover@Netlib@@QEAAXXZ
                     17 __imp_?agentLogReady@Netlib@@AEAAXXZ
                      A __imp_?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                     15 __imp_?discoveryFinished@Netlib@@AEAAXXZ
                      B __imp_?discoveryInProgress@Netlib@@QEBA_NXZ
                     20 __imp_?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                     21 __imp_?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                     14 __imp_?getOsName@Netlib@@AEAA?AVQString@@XZ
                     19 __imp_?getSlicerProgress@Netlib@@AEAAXXZ
                     1A __imp_?getSlicerProgressFinished@Netlib@@AEAAXXZ
                     18 __imp_?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                     13 __imp_?init@Netlib@@AEAAXXZ
                      F __imp_?layerID@Netlib@@QEBA?AVQString@@XZ
                     23 __imp_?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                     1C __imp_?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                     1E __imp_?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                     1D __imp_?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                     1F __imp_?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                      4 __imp_?registerNetLibraryQML@NetLibrary@@YAXXZ
                      C __imp_?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                     10 __imp_?setLayerID@Netlib@@QEAAXVQString@@@Z
                     12 __imp_?setSlicingDone@Netlib@@QEAAX_N@Z
                      E __imp_?setSlicingInProgress@Netlib@@QEAAX_N@Z
                     16 __imp_?slicerFinished@Netlib@@AEAAXXZ
                     11 __imp_?slicingDone@Netlib@@QEBA_NXZ
                     24 __imp_?slicingDoneChanged@Netlib@@QEAAX_N@Z
                      D __imp_?slicingInProgress@Netlib@@QEBA_NXZ
                     22 __imp_?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                     25 __imp_?staticMetaObject@Netlib@@2UQMetaObject@@B
                      5 __imp_?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                      6 __imp_?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                      3 netlib_NULL_THUNK_DATA
              
                Summary
              
                        C0 .debug$S
                        14 .idata$2
                        14 .idata$3
                         8 .idata$4
                         8 .idata$5
                         C .idata$6
              
              1 Reply Last reply
              0
              • Christian EhrlicherC Christian Ehrlicher

                I've no idea - does the linker really links against the import lib? Are other functions from within the library are resolved?

                M Offline
                M Offline
                m3g1dd
                wrote on last edited by
                #14

                @Christian-Ehrlicher

                Thanks! Yes, other functions of netlib are linked fine. I will update if I figure out the cause :)

                1 Reply Last reply
                0
                • hskoglundH Online
                  hskoglundH Online
                  hskoglund
                  wrote on last edited by
                  #15

                  Hi, just to check, what version of MSVC did you use for Qt 5.11.3 (when the linking worked), was it MSVC 2017 32-bit or MSVC 2017 64-bit?

                  M 1 Reply Last reply
                  0
                  • hskoglundH hskoglund

                    Hi, just to check, what version of MSVC did you use for Qt 5.11.3 (when the linking worked), was it MSVC 2017 32-bit or MSVC 2017 64-bit?

                    M Offline
                    M Offline
                    m3g1dd
                    wrote on last edited by
                    #16

                    @hskoglund

                    Hi! Thanks for follow up :)

                    For Qt 5.11.3 I'm using MSVC2017_64bit which works fine. My build directories are:

                    build-application-Desktop_Qt_5_11_3_MSVC2017_64bit-Debug
                    build-application-Desktop_Qt_5_11_3_MSVC2017_64bit-Release
                    build-application-Desktop_Qt_5_12_1_MSVC2017_64bit-Debug
                    
                    1 Reply Last reply
                    0
                    • M Offline
                      M Offline
                      m3g1dd
                      wrote on last edited by m3g1dd
                      #17

                      New observation: I installed Qt5.12.0 and my application compiles/links/runs just fine. I'm going to re-install Qt5.12.1 ... I have a feeling maybe re-installing it will resolve linker errors ... lets see ...

                      1 Reply Last reply
                      0
                      • M Offline
                        M Offline
                        m3g1dd
                        wrote on last edited by
                        #18

                        I reinstalled Qt 5.12.1 but it still throws the above-mentioned linker error. So basically, my observation is:

                        1. On Windows, Qt 5.11.3 and 5.12.0 work fine
                        2. On Windows, Qt 5.12.1 throws linker error
                        3. On Linux openSUSE Leap 15, Qt 5.12.1 works fine
                        1 Reply Last reply
                        0
                        • hskoglundH Online
                          hskoglundH Online
                          hskoglund
                          wrote on last edited by
                          #19

                          Hmm, just to check again: release builds and debug builds on 5.12.0 MSVC 2017 links fine and dandy, but the same linker throws a tantrum both for release and debug builds on 5.12.1 MSVC 2017.

                          Also, could do you a similar dumpbin on a 5.12.0 debug built netlib.lib as you did above for a 5.12.1 debug build?

                          M 2 Replies Last reply
                          2
                          • hskoglundH hskoglund

                            Hmm, just to check again: release builds and debug builds on 5.12.0 MSVC 2017 links fine and dandy, but the same linker throws a tantrum both for release and debug builds on 5.12.1 MSVC 2017.

                            Also, could do you a similar dumpbin on a 5.12.0 debug built netlib.lib as you did above for a 5.12.1 debug build?

                            M Offline
                            M Offline
                            m3g1dd
                            wrote on last edited by
                            #20

                            @hskoglund

                            Let me double-check everything again ... I'll give an update ...

                            1 Reply Last reply
                            0
                            • hskoglundH hskoglund

                              Hmm, just to check again: release builds and debug builds on 5.12.0 MSVC 2017 links fine and dandy, but the same linker throws a tantrum both for release and debug builds on 5.12.1 MSVC 2017.

                              Also, could do you a similar dumpbin on a 5.12.0 debug built netlib.lib as you did above for a 5.12.1 debug build?

                              M Offline
                              M Offline
                              m3g1dd
                              wrote on last edited by
                              #21

                              @hskoglund

                              I double-checked to make sure nothing is missed:

                              1. Qt_5_12_0_MSVC2017_64bit-Debug links fine and application runs :)
                              2. Qt_5_12_0_MSVC2017_64bit-Release links fine and application runs :)
                              3. Qt_5_12_1_MSVC2017_64bit-Debug throws:

                              main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl NetLibrary::registerNetLibraryQML(void)" (_imp?registerNetLibraryQML@NetLibrary@@YAXXZ) referenced in function main

                              1. Qt_5_12_1_MSVC2017_64bit-Release throws:

                              main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl NetLibrary::registerNetLibraryQML(void)" (_imp?registerNetLibraryQML@NetLibrary@@YAXXZ) referenced in function main


                              Also, here is the dumpbin for netlib.lib on Qt_5_12_0_MSVC2017_64bit-Debug which links fine and works nice:

                              C:\Users\me\repos\build-application-Desktop_Qt_5_12_0_MSVC2017_64bit-Debug\netlib\debug>dumpbin /linkermember netlib.lib
                              Microsoft (R) COFF/PE Dumper Version 14.15.26730.0
                              Copyright (C) Microsoft Corporation.  All rights reserved.
                              
                              
                              Dump of file netlib.lib
                              
                              File Type: LIBRARY
                              
                              Archive member name at 8: /
                              FFFFFFFF time/date
                                       uid
                                       gid
                                     0 mode
                                   C3D size
                              correct header end
                              
                                  69 public symbols
                              
                                   190A __IMPORT_DESCRIPTOR_netlib
                                   1B30 __NULL_IMPORT_DESCRIPTOR
                                   1C66 netlib_NULL_THUNK_DATA
                                   2878 ?registerNetLibraryQML@NetLibrary@@YAXXZ
                                   2878 __imp_?registerNetLibraryQML@NetLibrary@@YAXXZ
                                   2E0C ?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                                   2E0C __imp_?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                                   2E8A ?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                                   2E8A __imp_?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                                   1DBE ??0Netlib@@QEAA@XZ
                                   1DBE __imp_??0Netlib@@QEAA@XZ
                                   1E2C ??1Netlib@@UEAA@XZ
                                   1E2C __imp_??1Netlib@@UEAA@XZ
                                   1F06 ?agentDiscover@Netlib@@QEAAXXZ
                                   1F06 __imp_?agentDiscover@Netlib@@QEAAXXZ
                                   1FFA ?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                                   1FFA __imp_?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                                   210E ?discoveryInProgress@Netlib@@QEBA_NXZ
                                   210E __imp_?discoveryInProgress@Netlib@@QEBA_NXZ
                                   28FC ?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                                   28FC __imp_?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                                   2C7E ?slicingInProgress@Netlib@@QEBA_NXZ
                                   2C7E __imp_?slicingInProgress@Netlib@@QEBA_NXZ
                                   2A82 ?setSlicingInProgress@Netlib@@QEAAX_N@Z
                                   2A82 __imp_?setSlicingInProgress@Netlib@@QEAAX_N@Z
                                   2530 ?layerID@Netlib@@QEBA?AVQString@@XZ
                                   2530 __imp_?layerID@Netlib@@QEBA?AVQString@@XZ
                                   2982 ?setLayerID@Netlib@@QEAAXVQString@@@Z
                                   2982 __imp_?setLayerID@Netlib@@QEAAXVQString@@@Z
                                   2B82 ?slicingDone@Netlib@@QEBA_NXZ
                                   2B82 __imp_?slicingDone@Netlib@@QEBA_NXZ
                                   2A04 ?setSlicingDone@Netlib@@QEAAX_N@Z
                                   2A04 __imp_?setSlicingDone@Netlib@@QEAAX_N@Z
                                   24BE ?init@Netlib@@AEAAXXZ
                                   24BE __imp_?init@Netlib@@AEAAXXZ
                                   22AA ?getOsName@Netlib@@AEAA?AVQString@@XZ
                                   22AA __imp_?getOsName@Netlib@@AEAA?AVQString@@XZ
                                   2090 ?discoveryFinished@Netlib@@AEAAXXZ
                                   2090 __imp_?discoveryFinished@Netlib@@AEAAXXZ
                                   2B06 ?slicerFinished@Netlib@@AEAAXXZ
                                   2B06 __imp_?slicerFinished@Netlib@@AEAAXXZ
                                   1F80 ?agentLogReady@Netlib@@AEAAXXZ
                                   1F80 __imp_?agentLogReady@Netlib@@AEAAXXZ
                                   2430 ?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                                   2430 __imp_?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                                   232C ?getSlicerProgress@Netlib@@AEAAXXZ
                                   232C __imp_?getSlicerProgress@Netlib@@AEAAXXZ
                                   23AA ?getSlicerProgressFinished@Netlib@@AEAAXXZ
                                   23AA __imp_?getSlicerProgressFinished@Netlib@@AEAAXXZ
                                   1E9A __imp_??_7Netlib@@6B@
                                   2636 ?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                                   2636 __imp_?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                                   2752 ?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                                   2752 __imp_?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                                   26BE ?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                                   26BE __imp_?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                                   27D2 ?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                                   27D2 __imp_?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                                   2190 ?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                                   2190 __imp_?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                                   221A ?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                                   221A __imp_?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                                   2CFE ?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                                   2CFE __imp_?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                                   25B0 ?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                                   25B0 __imp_?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                                   2BFC ?slicingDoneChanged@Netlib@@QEAAX_N@Z
                                   2BFC __imp_?slicingDoneChanged@Netlib@@QEAAX_N@Z
                                   2D86 __imp_?staticMetaObject@Netlib@@2UQMetaObject@@B
                              
                              Archive member name at C82: /
                              FFFFFFFF time/date
                                       uid
                                       gid
                                     0 mode
                                   C4B size
                              correct header end
                              
                                  37 offsets
                              
                                      1     190A
                                      2     1B30
                                      3     1C66
                                      4     2878
                                      5     2E0C
                                      6     2E8A
                                      7     1DBE
                                      8     1E2C
                                      9     1F06
                                      A     1FFA
                                      B     210E
                                      C     28FC
                                      D     2C7E
                                      E     2A82
                                      F     2530
                                     10     2982
                                     11     2B82
                                     12     2A04
                                     13     24BE
                                     14     22AA
                                     15     2090
                                     16     2B06
                                     17     1F80
                                     18     2430
                                     19     232C
                                     1A     23AA
                                     1B     1E9A
                                     1C     2636
                                     1D     2752
                                     1E     26BE
                                     1F     27D2
                                     20     2190
                                     21     221A
                                     22     2CFE
                                     23     25B0
                                     24     2BFC
                                     25     2D86
                              
                                  69 public symbols
                              
                                      7 ??0Netlib@@QEAA@XZ
                                      8 ??1Netlib@@UEAA@XZ
                                      9 ?agentDiscover@Netlib@@QEAAXXZ
                                     17 ?agentLogReady@Netlib@@AEAAXXZ
                                      A ?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                                     15 ?discoveryFinished@Netlib@@AEAAXXZ
                                      B ?discoveryInProgress@Netlib@@QEBA_NXZ
                                     20 ?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
                                     21 ?discoveryResultChanged@Netlib@@QEAAXVQJsonArray@@@Z
                                     14 ?getOsName@Netlib@@AEAA?AVQString@@XZ
                                     19 ?getSlicerProgress@Netlib@@AEAAXXZ
                                     1A ?getSlicerProgressFinished@Netlib@@AEAAXXZ
                                     18 ?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                                     13 ?init@Netlib@@AEAAXXZ
                                      F ?layerID@Netlib@@QEBA?AVQString@@XZ
                                     23 ?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                                     1C ?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                                     1E ?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                                     1D ?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                                     1F ?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                                      4 ?registerNetLibraryQML@NetLibrary@@YAXXZ
                                      C ?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                                     10 ?setLayerID@Netlib@@QEAAXVQString@@@Z
                                     12 ?setSlicingDone@Netlib@@QEAAX_N@Z
                                      E ?setSlicingInProgress@Netlib@@QEAAX_N@Z
                                     16 ?slicerFinished@Netlib@@AEAAXXZ
                                     11 ?slicingDone@Netlib@@QEBA_NXZ
                                     24 ?slicingDoneChanged@Netlib@@QEAAX_N@Z
                                      D ?slicingInProgress@Netlib@@QEBA_NXZ
                                     22 ?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                                      5 ?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                                      6 ?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                                      1 __IMPORT_DESCRIPTOR_netlib
                                      2 __NULL_IMPORT_DESCRIPTOR
                                      7 __imp_??0Netlib@@QEAA@XZ
                                      8 __imp_??1Netlib@@UEAA@XZ
                                     1B __imp_??_7Netlib@@6B@
                                      9 __imp_?agentDiscover@Netlib@@QEAAXXZ
                                     17 __imp_?agentLogReady@Netlib@@AEAAXXZ
                                      A __imp_?agentSlice@Netlib@@QEAA_NAEBVQUrl@@AEBVQString@@V3@222@Z
                                     15 __imp_?discoveryFinished@Netlib@@AEAAXXZ
                                      B __imp_?discoveryInProgress@Netlib@@QEBA_NXZ
                                     20 __imp_?discoveryInProgressChanged@Netlib@@QEAAX_N@Z
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                                     14 __imp_?getOsName@Netlib@@AEAA?AVQString@@XZ
                                     19 __imp_?getSlicerProgress@Netlib@@AEAAXXZ
                                     1A __imp_?getSlicerProgressFinished@Netlib@@AEAAXXZ
                                     18 __imp_?handleSlicingInProgressChanged@Netlib@@AEAAX_N@Z
                                     13 __imp_?init@Netlib@@AEAAXXZ
                                      F __imp_?layerID@Netlib@@QEBA?AVQString@@XZ
                                     23 __imp_?layerIDChanged@Netlib@@QEAAXVQString@@@Z
                                     1C __imp_?metaObject@Netlib@@UEBAPEBUQMetaObject@@XZ
                                     1E __imp_?qt_metacall@Netlib@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z
                                     1D __imp_?qt_metacast@Netlib@@UEAAPEAXPEBD@Z
                                     1F __imp_?qt_static_metacall@Netlib@@CAXPEAVQObject@@W4Call@QMetaObject@@HPEAPEAX@Z
                                      4 __imp_?registerNetLibraryQML@NetLibrary@@YAXXZ
                                      C __imp_?setDiscoveryInProgress@Netlib@@QEAAX_N@Z
                                     10 __imp_?setLayerID@Netlib@@QEAAXVQString@@@Z
                                     12 __imp_?setSlicingDone@Netlib@@QEAAX_N@Z
                                      E __imp_?setSlicingInProgress@Netlib@@QEAAX_N@Z
                                     16 __imp_?slicerFinished@Netlib@@AEAAXXZ
                                     11 __imp_?slicingDone@Netlib@@QEBA_NXZ
                                     24 __imp_?slicingDoneChanged@Netlib@@QEAAX_N@Z
                                      D __imp_?slicingInProgress@Netlib@@QEBA_NXZ
                                     22 __imp_?slicingInProgressChanged@Netlib@@QEAAX_N@Z
                                     25 __imp_?staticMetaObject@Netlib@@2UQMetaObject@@B
                                      5 __imp_?tr@Netlib@@SA?AVQString@@PEBD0H@Z
                                      6 __imp_?trUtf8@Netlib@@SA?AVQString@@PEBD0H@Z
                                      3 netlib_NULL_THUNK_DATA
                              
                                Summary
                              
                                        C0 .debug$S
                                        14 .idata$2
                                        14 .idata$3
                                         8 .idata$4
                                         8 .idata$5
                                         C .idata$6
                              
                              1 Reply Last reply
                              0
                              • hskoglundH Online
                                hskoglundH Online
                                hskoglund
                                wrote on last edited by
                                #22

                                Hi, the dumpbin for 5.12.1 is identical to 5.12.0. Seems netlib.lib is the innocent guy here. So it must be the client program, i.e. your main.cpp, perhaps some kind of visibility problem. We're running out of options so I'm thinking you could try renaming your library to something less generic/vanilla (there are many other libraries called netlib.xxx out there, perhaps one of them has snuck into in 5.12.1)

                                So say instead of netlib you could call it m3gnetlib (prefixing with half of your username).
                                That would mean changing the .pro file, the .h and .cpp files and also the #define from NETLIBSHARED_EXPORT to M3GNETLIBSHARED_EXPORT.

                                I remember running into similar inexplicable issues in the past, and renaming the files helped (sometimes :-)

                                1 Reply Last reply
                                2
                                • M Offline
                                  M Offline
                                  mchinand
                                  wrote on last edited by mchinand
                                  #23

                                  In 5.12.1, default Windows library paths (e.g., Windows Kits) were added to the search path in qmake's makefile generator, but were added before the user-specified paths instead of after. There's already a commit to fix this and should be in 5.12.3. See this bugreport

                                  1 Reply Last reply
                                  4
                                  • hskoglundH Online
                                    hskoglundH Online
                                    hskoglund
                                    wrote on last edited by
                                    #24

                                    Thanks @mchinand!

                                    In Qt 5.12.1 @m3g1dd 's netlib.lib gets muscled out by the big wheels at Microsoft, when I do a dir of the Windows Kits on my C: indeed there's a netlib.lib there. And that's what the linker tries to link with.

                                    So either as I mentioned above go do that renaming, or wait for 5.12.3.

                                    M 1 Reply Last reply
                                    3
                                    • hskoglundH hskoglund

                                      Thanks @mchinand!

                                      In Qt 5.12.1 @m3g1dd 's netlib.lib gets muscled out by the big wheels at Microsoft, when I do a dir of the Windows Kits on my C: indeed there's a netlib.lib there. And that's what the linker tries to link with.

                                      So either as I mentioned above go do that renaming, or wait for 5.12.3.

                                      M Offline
                                      M Offline
                                      m3g1dd
                                      wrote on last edited by m3g1dd
                                      #25

                                      @hskoglund

                                      Hi, Thanks! Problem got resolved by renaming the netlib library to netagentlib, and Qt 5.12.1 builds and runs the application without any issue.

                                      These are all my code changes to rename the library:

                                      On my netlib library project file i.e. netlib.pro file I changed:

                                      -TARGET = netlib
                                      +TARGET = netagentlib
                                      

                                      Also, on my application executable project *.pro file I replaced these lines:

                                      win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../netlib/release/ -lnetlib
                                      else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../netlib/debug/ -lnetlib
                                      else:unix: LIBS += -L$$OUT_PWD/../netlib/ -lnetlib
                                      

                                      with these lines:

                                      win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../netlib/release/ -lnetagentlib
                                      else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../netlib/debug/ -lnetagentlib
                                      else:unix: LIBS += -L$$OUT_PWD/../netlib/ -lnetagentlib
                                      
                                      1 Reply Last reply
                                      2

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