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    Solved Qt 5.11.3 works fine, but Qt 5.12.1 throws LINKER errors

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    • Christian Ehrlicher
      Christian Ehrlicher Lifetime Qt Champion last edited by

      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 Reply Quote 0
      • hskoglund
        hskoglund @m3g1dd last edited by

        @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 Reply Quote 3
        • M
          m3g1dd @hskoglund last edited by m3g1dd

          @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 Reply Quote 0
          • M
            m3g1dd @Christian Ehrlicher last edited by

            @Christian-Ehrlicher

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

            1 Reply Last reply Reply Quote 0
            • hskoglund
              hskoglund last edited by

              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 Reply Quote 0
              • M
                m3g1dd @hskoglund last edited by

                @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 Reply Quote 0
                • M
                  m3g1dd last edited by m3g1dd

                  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 Reply Quote 0
                  • M
                    m3g1dd last edited by

                    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 Reply Quote 0
                    • hskoglund
                      hskoglund last edited by

                      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 Reply Quote 2
                      • M
                        m3g1dd @hskoglund last edited by

                        @hskoglund

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

                        1 Reply Last reply Reply Quote 0
                        • M
                          m3g1dd @hskoglund last edited by

                          @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
                                 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 Reply Quote 0
                          • hskoglund
                            hskoglund last edited by

                            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 Reply Quote 2
                            • M
                              mchinand last edited by mchinand

                              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 Reply Quote 4
                              • hskoglund
                                hskoglund last edited by

                                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 Reply Quote 3
                                • M
                                  m3g1dd @hskoglund last edited by m3g1dd

                                  @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
                                  
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