Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. 3rd Party Software
  4. LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.
Forum Updated to NodeBB v4.3 + New Features

LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.

Scheduled Pinned Locked Moved Unsolved 3rd Party Software
27 Posts 5 Posters 7.3k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • SGaistS SGaist

    I missed on thing: you don't link against .dll files, you link against .lib files, you should start by fixing that.

    S Offline
    S Offline
    Somesh Singh
    wrote on last edited by
    #10

    @SGaist
    I fixed that ...its still the same.
    I think it has to do something with some header files maybe

    1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by SGaist
      #11

      Does it happen when you try to link against the HighGui library ?

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

      S 1 Reply Last reply
      0
      • SGaistS SGaist

        Does it happen when you try to link against the HighGui library ?

        S Offline
        S Offline
        Somesh Singh
        wrote on last edited by
        #12

        @SGaist yeah it still shows the same error.
        i even tried including the libraries one by one..it still does not work
        Do you think my code has some problems??

        1 Reply Last reply
        0
        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #13

          Do you mean, you have that problem when you link any of the OpenCV libraries ?

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

          S 1 Reply Last reply
          0
          • SGaistS SGaist

            Do you mean, you have that problem when you link any of the OpenCV libraries ?

            S Offline
            S Offline
            Somesh Singh
            wrote on last edited by
            #14

            @SGaist Yes
            I tried using MingW compiler and it works fine with the building of the CmakeLists.txt file and i get the required output.
            its just the compiler MSVC15 2017 x64 that i s not able to build the project.
            Even with the Cmake it does not run as intended.

            1 Reply Last reply
            0
            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #15

              On Windows, you can't mix and match C++ libraries built with different compilers. The only exception currently is VS2017 being backward compatible with VS2015.

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

              S 1 Reply Last reply
              1
              • SGaistS SGaist

                On Windows, you can't mix and match C++ libraries built with different compilers. The only exception currently is VS2017 being backward compatible with VS2015.

                S Offline
                S Offline
                Somesh Singh
                wrote on last edited by
                #16

                @SGaist
                So why am i getting the error for the ".obj" file not found
                As shown in the example that i posted..its just configured to be used with Qt 5.12.0MSVC2017 x64
                So why does it not work.

                i was just trying different ways to make it work with a different compiler to check the integrity of my program .

                kshegunovK 1 Reply Last reply
                0
                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #17

                  You should compare the Makefile generated by your CMake project and the one from the .pro file

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

                  S 1 Reply Last reply
                  0
                  • SGaistS SGaist

                    You should compare the Makefile generated by your CMake project and the one from the .pro file

                    S Offline
                    S Offline
                    Somesh Singh
                    wrote on last edited by
                    #18

                    @SGaist
                    Is there something specific that i should be looking for??
                    I am not an expert in debugging by just looking at the 2 files.

                    1 Reply Last reply
                    0
                    • S Somesh Singh

                      @SGaist
                      So why am i getting the error for the ".obj" file not found
                      As shown in the example that i posted..its just configured to be used with Qt 5.12.0MSVC2017 x64
                      So why does it not work.

                      i was just trying different ways to make it work with a different compiler to check the integrity of my program .

                      kshegunovK Offline
                      kshegunovK Offline
                      kshegunov
                      Moderators
                      wrote on last edited by
                      #19

                      @Somesh-Singh said in LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.:

                      So why am i getting the error for the ".obj" file not found

                      @SGaist said in LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.:

                      On Windows, you can't mix and match C++ libraries built with different compilers. The only exception currently is VS2017 being backward compatible with VS2015.

                      Let's go back a step. Firstly your LIBS variable is incorrect. Secondly you're linking system libraries which from the code example it seems you shouldn't. And thirdly, if a set of libraries worked with mingw then they were compiled with mingw (hence the quote from @SGaist). That set of libraries can not, and shall not be used with msvc, ever. You need a set of libraries compiled with msvc to use them in an application built with msvc. This also extends to the msvc version - for example msvc2015 isn't backwards compatible, so you likely need to match the versions as well.

                      Read and abide by the Qt Code of Conduct

                      S 1 Reply Last reply
                      1
                      • kshegunovK kshegunov

                        @Somesh-Singh said in LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.:

                        So why am i getting the error for the ".obj" file not found

                        @SGaist said in LINK1104: "D:\Windows.obj" file not found while building a simple opencv project.:

                        On Windows, you can't mix and match C++ libraries built with different compilers. The only exception currently is VS2017 being backward compatible with VS2015.

                        Let's go back a step. Firstly your LIBS variable is incorrect. Secondly you're linking system libraries which from the code example it seems you shouldn't. And thirdly, if a set of libraries worked with mingw then they were compiled with mingw (hence the quote from @SGaist). That set of libraries can not, and shall not be used with msvc, ever. You need a set of libraries compiled with msvc to use them in an application built with msvc. This also extends to the msvc version - for example msvc2015 isn't backwards compatible, so you likely need to match the versions as well.

                        S Offline
                        S Offline
                        Somesh Singh
                        wrote on last edited by
                        #20

                        @kshegunov

                        I have specific set of libraries for both mingw and msvc.
                        Also, i linked the system libraries in the .pro file as it was not accepting them from the system variables "PATH"
                        My issue is just during the compilation with opencv.

                        For eg., Qt has its included examples just to try out for beginners, those examples run completely fine, which means the problem lies somewhere in the code itself which i wrote.

                        0_1549927377207_2c5e7161-0e8d-46f7-a940-69a67ad3e1ed-image.png

                        these are all the compilers i have which are seperately

                        0_1549927469876_fbd57746-4af4-4f11-9815-73b8d8dda0c1-image.png

                        I need to get my default compiler to work with opencv.
                        thats my end goal

                        kshegunovK 1 Reply Last reply
                        0
                        • S Somesh Singh

                          @kshegunov

                          I have specific set of libraries for both mingw and msvc.
                          Also, i linked the system libraries in the .pro file as it was not accepting them from the system variables "PATH"
                          My issue is just during the compilation with opencv.

                          For eg., Qt has its included examples just to try out for beginners, those examples run completely fine, which means the problem lies somewhere in the code itself which i wrote.

                          0_1549927377207_2c5e7161-0e8d-46f7-a940-69a67ad3e1ed-image.png

                          these are all the compilers i have which are seperately

                          0_1549927469876_fbd57746-4af4-4f11-9815-73b8d8dda0c1-image.png

                          I need to get my default compiler to work with opencv.
                          thats my end goal

                          kshegunovK Offline
                          kshegunovK Offline
                          kshegunov
                          Moderators
                          wrote on last edited by kshegunov
                          #21

                          Okay, let me rephrase:

                          INCLUDEPATH += "D:\Windows Kits\10\Include\10.0.17763.0\ucrt"
                          INCLUDEPATH += "D:\Windows Kits\10\Include\10.0.17763.0\ucrt\sys"
                          

                          Why do you need this?

                          LIBS += D:\Windows Kits\10\Lib\10.0.17763.0\um\x64\shell32.lib
                          

                          What part of the system API you're using, so you need this one? (may be the source of your error too).

                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_core400.dll
                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_highgui400.dll
                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_imgcodecs400.dll
                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_imgproc400.dll
                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_features2d400.dll
                          LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_calib3d400.dll
                          

                          One does not link .dlls, one links against them with the help of a .lib.
                          https://doc.qt.io/qt-5/qmake-variable-reference.html#libs

                          PS.
                          Did you compile opencv with the version of msvc you're trying the build the application with?

                          Read and abide by the Qt Code of Conduct

                          S 1 Reply Last reply
                          2
                          • kshegunovK kshegunov

                            Okay, let me rephrase:

                            INCLUDEPATH += "D:\Windows Kits\10\Include\10.0.17763.0\ucrt"
                            INCLUDEPATH += "D:\Windows Kits\10\Include\10.0.17763.0\ucrt\sys"
                            

                            Why do you need this?

                            LIBS += D:\Windows Kits\10\Lib\10.0.17763.0\um\x64\shell32.lib
                            

                            What part of the system API you're using, so you need this one? (may be the source of your error too).

                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_core400.dll
                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_highgui400.dll
                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_imgcodecs400.dll
                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_imgproc400.dll
                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_features2d400.dll
                            LIBS += D:\OpenCV\opencv\build\bin\Release\opencv_calib3d400.dll
                            

                            One does not link .dlls, one links against them with the help of a .lib.
                            https://doc.qt.io/qt-5/qmake-variable-reference.html#libs

                            PS.
                            Did you compile opencv with the version of msvc you're trying the build the application with?

                            S Offline
                            S Offline
                            Somesh Singh
                            wrote on last edited by
                            #22

                            @kshegunov i changed the .dll to .lib

                            the only reason i included the shell32.lib file was because it shows that it cannot find the specified file before giving me the error that "Cannot find file D:\Windows.obj"

                            Also i built opencv using both MSVS 2017 x64 and mingw x86.
                            the build was succesfull without any errors in the process.

                            1 Reply Last reply
                            0
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #23

                              Then you have to ensure the path you are using points to the OpenCV version built by the same compiler as you are currently using for your application.

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

                              S 1 Reply Last reply
                              1
                              • SGaistS SGaist

                                Then you have to ensure the path you are using points to the OpenCV version built by the same compiler as you are currently using for your application.

                                S Offline
                                S Offline
                                Somesh Singh
                                wrote on last edited by
                                #24

                                @SGaist I have tried adding all the paths to the system variable path manager but its still the same.
                                Does my Qt have any configuration issues while compiling or building.
                                I also ran configure.bat from the source folder to properly configure the environment but still no progress.

                                1 Reply Last reply
                                0
                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #25

                                  Did you try to use a pre-built version of OpenCV ?

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

                                  S 1 Reply Last reply
                                  0
                                  • SGaistS SGaist

                                    Did you try to use a pre-built version of OpenCV ?

                                    S Offline
                                    S Offline
                                    Somesh Singh
                                    wrote on last edited by
                                    #26

                                    @SGaist
                                    Where can i get the prebuilt version.
                                    i used OpenCV 4.0.0 from the website. and built it from scratch.
                                    Do you think i might have excluded some packages from Cmake while building and configuring.

                                    1 Reply Last reply
                                    0
                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #27

                                      https://opencv.org/releases.html

                                      Version 4.0.1 is available as it seems.

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

                                      1 Reply Last reply
                                      1

                                      • Login

                                      • Login or register to search.
                                      • First post
                                        Last post
                                      0
                                      • Categories
                                      • Recent
                                      • Tags
                                      • Popular
                                      • Users
                                      • Groups
                                      • Search
                                      • Get Qt Extensions
                                      • Unsolved