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executable runs fine from local directory / throws error with IDE.

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  • TechnologistT Offline
    TechnologistT Offline
    Technologist
    wrote on last edited by Technologist
    #10

    Can you please be more specific. In the build directory for the app there are no cmakelists.txt. I am really just learning this particular aspect of programming. Makefiles in the build directory. "Run and Build"-->I don't know where to make file is ...

    1 Reply Last reply
    0
    • M Offline
      M Offline
      mcosta
      wrote on last edited by
      #11

      HI,

      you said you're using CMake, so you should post the CMakeLists.txt in the source directory

      Once your problem is solved don't forget to:

      • Mark the thread as SOLVED using the Topic Tool menu
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      • TechnologistT Offline
        TechnologistT Offline
        Technologist
        wrote on last edited by Technologist
        #12

        I used CMake to build the library, use qmake to build and run projects via the green button.

        Ok I found a cmakelists.txt in the source directory of the opencv build, but too large to paste.
        The next make file was in the program directory.

        #############################################################################
        # Makefile for building: simpleapp
        # Generated by qmake (3.0) (Qt 5.4.1)
        # Project:  ..\simpleapp\simpleapp.pro
        # Template: app
        # Command: C:\Qt\5.4\mingw491_32\bin\qmake.exe -spec win32-g++ -o Makefile ..\simpleapp\simpleapp.pro
        #############################################################################
        
        MAKEFILE      = Makefile
        
        first: release
        install: release-install
        uninstall: release-uninstall
        QMAKE         = C:\Qt\5.4\mingw491_32\bin\qmake.exe
        DEL_FILE      = del
        CHK_DIR_EXISTS= if not exist
        MKDIR         = mkdir
        COPY          = copy /y
        COPY_FILE     = $(COPY)
        COPY_DIR      = xcopy /s /q /y /i
        INSTALL_FILE  = $(COPY_FILE)
        INSTALL_PROGRAM = $(COPY_FILE)
        INSTALL_DIR   = $(COPY_DIR)
        DEL_FILE      = del
        SYMLINK       = copy /y
        DEL_DIR       = rmdir
        MOVE          = move
        SUBTARGETS    =  \
        		release \
        		debug
        
        
        release: FORCE
        	$(MAKE) -f $(MAKEFILE).Release
        release-make_first: FORCE
        	$(MAKE) -f $(MAKEFILE).Release 
        release-all: FORCE
        	$(MAKE) -f $(MAKEFILE).Release all
        release-clean: FORCE
        	$(MAKE) -f $(MAKEFILE).Release clean
        release-distclean: FORCE
        	$(MAKE) -f $(MAKEFILE).Release distclean
        release-install: FORCE
        	$(MAKE) -f $(MAKEFILE).Release install
        release-uninstall: FORCE
        	$(MAKE) -f $(MAKEFILE).Release uninstall
        debug: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug
        debug-make_first: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug 
        debug-all: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug all
        debug-clean: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug clean
        debug-distclean: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug distclean
        debug-install: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug install
        debug-uninstall: FORCE
        	$(MAKE) -f $(MAKEFILE).Debug uninstall
        
        Makefile: ../simpleapp/simpleapp.pro ../../../../Qt/5.4/mingw491_32/mkspecs/win32-g++/qmake.conf ../../../../Qt/5.4/mingw491_32/mkspecs/features/spec_pre.prf \
        		../../../../Qt/5.4/mingw491_32/mkspecs/qdevice.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/features/device_config.prf \
        		../../../../Qt/5.4/mingw491_32/mkspecs/common/shell-win32.conf \
        		../../../../Qt/5.4/mingw491_32/mkspecs/qconfig.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axbase.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axbase_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axcontainer.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axcontainer_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axserver.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_axserver_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_bluetooth.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_bluetooth_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_bootstrap_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_clucene_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_concurrent.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_concurrent_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_core.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_dbus.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_dbus_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_declarative.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_designer_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_designercomponents_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_enginio.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_multimedia_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_multimediawidgets.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_network.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_network_private.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_printsupport_private.pri \
        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_qml.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_qmltest.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/modules/qt_lib_quick.pri \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/win32-g++/qmake.conf \
        		../../../../Qt/5.4/mingw491_32/mkspecs/features/spec_post.prf \
        		../../../../Qt/5.4/mingw491_32/mkspecs/features/exclusive_builds.prf \
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        		../../../../Qt/5.4/mingw491_32/mkspecs/features/win32/default_pre.prf \
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        		../simpleapp/simpleapp.pro \
        		C:/Qt/5.4/mingw491_32/lib/Qt5Core.prl
        	$(QMAKE) -spec win32-g++ -o Makefile ..\simpleapp\simpleapp.pro
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        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_uitools_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webchannel.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webchannel_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webkit.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webkit_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webkitwidgets.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webkitwidgets_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_websockets.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_websockets_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webview.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_webview_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_widgets.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_widgets_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_winextras.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_winextras_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_xml.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_xml_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_xmlpatterns.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\modules\qt_lib_xmlpatterns_private.pri:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\qt_functions.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\qt_config.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\win32\qt_config.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\win32-g++\qmake.conf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\spec_post.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\exclusive_builds.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\default_pre.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\win32\default_pre.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\resolve_config.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\exclusive_builds_post.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\default_post.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\win32\console.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\win32\rtti.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\precompile_header.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\warn_on.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\qt.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\resources.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\moc.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\testcase_targets.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\exceptions.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\yacc.prf:
        ..\..\..\..\Qt\5.4\mingw491_32\mkspecs\features\lex.prf:
        ..\simpleapp\simpleapp.pro:
        C:/Qt/5.4/mingw491_32/lib/Qt5Core.prl:
        qmake: FORCE
        	@$(QMAKE) -spec win32-g++ -o Makefile ..\simpleapp\simpleapp.pro
        
        qmake_all: FORCE
        
        make_first: release-make_first debug-make_first FORCE
        all: release-all debug-all FORCE
        clean: release-clean debug-clean FORCE
        distclean: release-distclean debug-distclean FORCE
        	-$(DEL_FILE) Makefile
        
        release-mocclean:
        	$(MAKE) -f $(MAKEFILE).Release mocclean
        debug-mocclean:
        	$(MAKE) -f $(MAKEFILE).Debug mocclean
        mocclean: release-mocclean debug-mocclean
        
        release-mocables:
        	$(MAKE) -f $(MAKEFILE).Release mocables
        debug-mocables:
        	$(MAKE) -f $(MAKEFILE).Debug mocables
        mocables: release-mocables debug-mocables
        
        check: first
        FORCE:
        
        $(MAKEFILE).Release: Makefile
        $(MAKEFILE).Debug: Makefile
        
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        • JKSHJ Offline
          JKSHJ Offline
          JKSH
          Moderators
          wrote on last edited by
          #13

          Hi @Technologist,

          Let's take a step back. Do an officially-supported Hello World test:

          1. Open Qt Creator
          2. Create a new project: "File" -> "New File or Project..." -> "Application" -> "Qt Widgets Application"
          3. Click the green button.

          Does this work? If so, examine the .pro file and look for differences with yours.

          Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

          1 Reply Last reply
          0
          • TechnologistT Offline
            TechnologistT Offline
            Technologist
            wrote on last edited by Technologist
            #14

            Ok, I built the "official" hello world app which worked flawlessly. The #include <QApplication>
            didn't throw an error.

            I ran the "Unofficial" hello world and compilation stopped secondary to error: qapplication.h: No such file or directory

            Ive compared both .pro files and I don't see why the unofficial can't find the same include that the "official" hello world can. I'll post

            "official" HW .pro file/main

            #-------------------------------------------------
            #
            # Project created by QtCreator 2015-04-17T08:55:34
            #
            #-------------------------------------------------
            
            QT       += core gui
            
            greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
            
            TARGET = TestApp
            TEMPLATE = app
            
            
            SOURCES += main.cpp\
                    mainwindow.cpp
            
            HEADERS  += mainwindow.h
            
            FORMS    += mainwindow.ui
            
            main.cpp
            
            #include "mainwindow.h"
            #include <QApplication>
            
            int main(int argc, char *argv[])
            {
                QApplication a(argc, argv);
                MainWindow w;
                w.show();
            
                return a.exec();
            }
            
            "Unofficial" HW File
            '''
            

            Unofficial Hello world

            .pro file - qapp/qbutton not found

            QT       += core
            
            QT       -= gui
            
            TARGET = HelloWorldUnofficialvsTestApp
            CONFIG   += console
            CONFIG   -= app_bundle
            
            TEMPLATE = app
            
            
            SOURCES += main.cpp
            
            #include <qapplication.h>
            #include <qpushbutton.h>
            
            
            int main( int argc, char **argv )
            {
                QApplication a( argc, argv );
            
                QPushButton hello( "Hello world!", 0 );
                hello.resize( 100, 30 );
            
                a.setMainWidget( &hello );
                hello.show();
                return a.exec();
            }
            1 Reply Last reply
            0
            • JKSHJ Offline
              JKSHJ Offline
              JKSH
              Moderators
              wrote on last edited by JKSH
              #15

              @Technologist said:

              Ive compared both .pro files and I don't see why the unofficial can't find the same include that the "official" hello world can.

              By default, the Qt Core and Qt GUI modules are available for your project. Let's see how the .pro files change this.

              "official" HW .pro file
              QT += widgets

              This line says, "ADD the Qt Widgets module to my project". This is required to find QApplication and QPushButton, because they belong to the Qt Widgets module. They used to be in the Qt GUI module in Qt 4, but Qt 5 has a new structure. This is one big reason to avoid old tutorials and stick to new ones.

              Unofficial Hello world
              QT -= gui

              This line says, "EXCLUDE the Qt GUI module from my project". This removes all GUI functionality, like OpenGL. Since you want to build an OpenCV app, you probably don't want this option!

              See https://doc.qt.io/qt-5/qtmodules.html for a list of all available modules.

              Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

              1 Reply Last reply
              0
              • TechnologistT Offline
                TechnologistT Offline
                Technologist
                wrote on last edited by
                #16

                That shows that the configuration problem of .pro file was human error. It found my qt header files. Thanks for the pointer on opel GL etc. This solution rules out a single error behind both. This problem is fixed however the first problem persists: the IDE crashes when I build the "Show Picture" routine, but runs perfectly when I execute it from build directory. Do I need to close out this ticket and reopen it or finish out here?

                Thanks for your time

                1 Reply Last reply
                0
                • JKSHJ Offline
                  JKSHJ Offline
                  JKSH
                  Moderators
                  wrote on last edited by JKSH
                  #17

                  @Technologist said:

                  That shows that the configuration problem of .pro file was human error. It found my qt header files. Thanks for the pointer on opel GL etc. This solution rules out a single error behind both. This problem is fixed however the first problem persists: the IDE crashes when I build the "Show Picture" routine, but runs perfectly when I execute it from build directory. Do I need to close out this ticket and reopen it or finish out here?

                  Thanks for your time

                  You're welcome :)

                  Yes, this little excursion helped us to establish that your installation of Qt and the IDE are fine. So, the problem probably lies in your project configuration or environment.

                  I just noticed that you have Qt and Qt Creator in your PATH. This is very bad, because they both contain different (and incompatible) versions of the same DLL (e.g. Qt5Core.dll). Remove them from your PATH. There is no need for anything Qt-related to be in the PATH, and having them there is the cause of many mysterious crashes.

                  After cleaning your PATH, try running your program again. (To do it outside the IDE the proper way, see http://wiki.qt.io/Deploy_an_Application_on_Windows )

                  In general, MSVC and MinGW are incompatible. Qt Creator is a Qt-built program too, which uses MSVC 2010-built Qt DLLs. I also noticed that your copy OpenCV is built with MSVC 2012. I'm not sure if this is compatible with your MinGW-built app.

                  You can continue posting here, as it's still about your original post.

                  Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

                  1 Reply Last reply
                  0
                  • TechnologistT Offline
                    TechnologistT Offline
                    Technologist
                    wrote on last edited by Technologist
                    #18

                    FYI the platform was built using cmake and mingw, not MSVS (I don't have msvs on the system.) -- if that's coming across from the ?path?. Was it this line: %OPENCV%\buildx86\vc11Honestly I think I put it in the path mistakenly. Can I remove it?

                    OK cleaned my path. No more missing qt files with Widgets addition to pro file. Application still continue to crash in intialization phase. Sometimes it will throw this error a lot of the time or just open a window and crash. Below it can't find an opencv file.

                    The program can't start because libgcc_s_dw2-1.dll is missing from your computer Try installing the program to fix this problem.
                    

                    New local path: C:\OpenCV-2.3.1\bin;C:\OpenCV-2.3.1\install\include\opencv2;C:\OpenCV-2.3.1\lib;
                    System path:%OPENCV%\build\x86\vc11\bin; c:\OpenCV-2.3.1\bin;C:\opencv-win\opencv\sources\modules;

                    error :C:\Users\Technologist\Documents\NewOne\main.cpp:2: error: opencv2/core/core.hpp: No such file or directory #include <opencv2/core/core.hpp>
                    ^
                    pro. file:

                    QT       += core
                    
                    QT       += gui
                    QT       += widgets
                    
                    TARGET = NewOne
                    CONFIG   += console
                    CONFIG   -= app_bundle
                    
                    TEMPLATE = app
                    
                    SOURCES += main.cpp
                    
                    INCLUDEPATH += "C:/OpenCV-2.3.1/install/include/opencv2/"
                    
                    LIBS += -LC:\OpenCV-2.3.1\lib\
                        -lopencv_core2411.dll.a \
                        -lopencv_highgui2411.dl.al \
                        -lopencv_imgproc2411.dll.a \
                        -lopencv_features2d2411.dll.a \
                        -lopencv_calib3d2411.dll.a
                    
                    #include <QCoreApplication>
                    #include <opencv2/core/core.hpp>
                    #include <opencv2/highgui/highgui.hpp>
                    int main() {
                            // read an image
                            cv::Mat image= cv::imread("img.jpg");
                            // create image window named "My Image"
                            cv::namedWindow("My Image");
                            // show the image on window
                            cv::imshow("My Image", image);
                            // wait key for 5000 ms
                            cv::waitKey(5000);
                            return 1;
                    }
                    
                    
                    JKSHJ 1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by SGaist
                      #19

                      Don't include opencv2 in your INCLUDEPATH entry

                      INCLUDEPATH += "C:/OpenCV-2.3.1/install/include/"

                      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
                      0
                      • TechnologistT Offline
                        TechnologistT Offline
                        Technologist
                        wrote on last edited by Technologist
                        #20

                        I don't see any opencv2 in your includepath unless you are referring to the opencv2 down the file directory from there.

                        INCLUDEPATH += "C:\OpenCV-2.3.1\install\include\opencv2"
                        

                        Sorry, now I am feeling newbish.

                        1 Reply Last reply
                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #21

                          That's the point. Since you use:

                          #include <opencv2/core/core.hpp>

                          If you use INCLUDEPATH += "C:/OpenCV-2.3.1/install/include/opencv2/" then the headers won't be found because you are trying to include a file that would be searched like:
                          "C:/OpenCV-2.3.1/install/include/opencv2/opencv2/core/core.hpp".

                          So either remove opencv2 from your include lines or remove it from your INCLUDEPATH line.

                          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
                          0
                          • TechnologistT Technologist

                            FYI the platform was built using cmake and mingw, not MSVS (I don't have msvs on the system.) -- if that's coming across from the ?path?. Was it this line: %OPENCV%\buildx86\vc11Honestly I think I put it in the path mistakenly. Can I remove it?

                            OK cleaned my path. No more missing qt files with Widgets addition to pro file. Application still continue to crash in intialization phase. Sometimes it will throw this error a lot of the time or just open a window and crash. Below it can't find an opencv file.

                            The program can't start because libgcc_s_dw2-1.dll is missing from your computer Try installing the program to fix this problem.
                            

                            New local path: C:\OpenCV-2.3.1\bin;C:\OpenCV-2.3.1\install\include\opencv2;C:\OpenCV-2.3.1\lib;
                            System path:%OPENCV%\build\x86\vc11\bin; c:\OpenCV-2.3.1\bin;C:\opencv-win\opencv\sources\modules;

                            error :C:\Users\Technologist\Documents\NewOne\main.cpp:2: error: opencv2/core/core.hpp: No such file or directory #include <opencv2/core/core.hpp>
                            ^
                            pro. file:

                            QT       += core
                            
                            QT       += gui
                            QT       += widgets
                            
                            TARGET = NewOne
                            CONFIG   += console
                            CONFIG   -= app_bundle
                            
                            TEMPLATE = app
                            
                            SOURCES += main.cpp
                            
                            INCLUDEPATH += "C:/OpenCV-2.3.1/install/include/opencv2/"
                            
                            LIBS += -LC:\OpenCV-2.3.1\lib\
                                -lopencv_core2411.dll.a \
                                -lopencv_highgui2411.dl.al \
                                -lopencv_imgproc2411.dll.a \
                                -lopencv_features2d2411.dll.a \
                                -lopencv_calib3d2411.dll.a
                            
                            #include <QCoreApplication>
                            #include <opencv2/core/core.hpp>
                            #include <opencv2/highgui/highgui.hpp>
                            int main() {
                                    // read an image
                                    cv::Mat image= cv::imread("img.jpg");
                                    // create image window named "My Image"
                                    cv::namedWindow("My Image");
                                    // show the image on window
                                    cv::imshow("My Image", image);
                                    // wait key for 5000 ms
                                    cv::waitKey(5000);
                                    return 1;
                            }
                            
                            
                            JKSHJ Offline
                            JKSHJ Offline
                            JKSH
                            Moderators
                            wrote on last edited by
                            #22

                            @Technologist said:

                            FYI the platform was built using cmake and mingw, not MSVS (I don't have msvs on the system.) -- if that's coming across from the ?path?. Was it this line: %OPENCV%\buildx86\vc11

                            Yes, it was that line. "VC11" represents Visual Studio 2012.

                            Honestly I think I put it in the path mistakenly. Can I remove it?

                            I don't know, as I've never used OpenCV myself. How does OpenCV recommend you set up your libraries?

                            OK cleaned my path. No more missing qt files with Widgets addition to pro file. Application still continue to crash in intialization phase. Sometimes it will throw this error a lot of the time or just open a window and crash. Below it can't find an opencv file.

                            The program can't start because libgcc_s_dw2-1.dll is missing from your computer Try installing the program to fix this problem.
                            

                            That's not an error that can only happen "some of the time" for a particular setup -- it either happens all of the time, or it won't happen.

                            I suspect that you are trying to launch your app in different ways but then combining their results into one observation. Please be systematic in your investigations: Describe what you do leading up to a specific crash (e.g. "This happens I try to launch my app from the IDE" and "That happens when I try to launch my app from the build directory")

                            Note: Launching from a build directory is like trying to run a deployed application. Follow http://wiki.qt.io/Deploy_an_Application_on_Windows carefully

                            Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

                            1 Reply Last reply
                            0
                            • TechnologistT Offline
                              TechnologistT Offline
                              Technologist
                              wrote on last edited by Technologist
                              #23

                              I suspect that you are trying to launch your app in different ways but then combining their results into one observation.. Please be systematic in your investigations.

                              The more systematic the better. I am trying to get all my apps, as with any good scientific analysis, running from the same baseline. We have done most of that already by clearing up the header and include file issues, and this has prepared the way for a final solution, easier to see with less stuff being wrong. Now its finally the library error they all seem to share.

                              Thx for your time.

                              Below: :-1: error: cannot find -llibopencv_core2411.dll.a  :-1: error: cannot find -llibopencv_highgui2411.dll.a
                              

                              .pro

                              QT       += core
                              QT       += widgets
                              QT       += gui
                              
                              TARGET = AnotherWack
                              CONFIG   += console
                              CONFIG   -= app_bundle
                              
                              TEMPLATE = app
                              
                              
                              SOURCES += main.cpp
                              
                              INCLUDEPATH += "C:/OpenCV-2.3.1/install/include/"
                              
                              LIBS += -LC:/OpenCV-2.3.1/lib \
                                      -llibopencv_core2411.dll.a \
                                      -llibopencv_highgui2411.dll.a \
                              

                              main

                              #include <QCoreApplication>
                              #include <opencv2/core/core.hpp>
                              #include <opencv2/highgui/highgui.hpp>
                              
                              int main() {
                                      // read an image
                                      cv::Mat image= cv::imread("img.jpg");
                                      // create image window named "My Image"
                                      cv::namedWindow("My Image");
                                      // show the image on window
                                      cv::imshow("My Image", image);
                                      // wait key for 5000 ms
                                      cv::waitKey(5000);
                                      return 1;
                              }
                              
                              1 Reply Last reply
                              0
                              • M Offline
                                M Offline
                                mcosta
                                wrote on last edited by
                                #24

                                @Technologist said:

                                -llibopencv_core2411.dll.a

                                Hi,

                                if you use the flag -l you have to omit the lib prefix and the extensions -llibopencv_core2411

                                Once your problem is solved don't forget to:

                                • Mark the thread as SOLVED using the Topic Tool menu
                                • Vote up the answer(s) that helped you to solve the issue

                                You can embed images using (http://imgur.com/) or (http://postimage.org/)

                                1 Reply Last reply
                                0
                                • TechnologistT Offline
                                  TechnologistT Offline
                                  Technologist
                                  wrote on last edited by Technologist
                                  #25

                                  I'm no longer getting the include and library errors that I was. The main error was getting a build error with a working executable. Now after installing these changes, I get the build error and executable error (they are the same) . Somehow, am chagrin to say, I can't account for the change.They both crash now. I wanted to try putting the DLL in with the executable to see if that would work, but the relevant 5 project dlls were gone (??). I had to poach them from an apparent windows directory vc 11 and copy them to the library that couldn't find them. The same error would continue.

                                  Present code:
                                  main.cpp

                                  #include <QCoreApplication>
                                  #include <opencv2/core/core.hpp>
                                  #include <opencv2/highgui/highgui.hpp>
                                  
                                  int main() {
                                  
                                      // read an image
                                      cv::Mat image= cv::imread("img.jpg");
                                      // create image window named "My Image"
                                      cv::namedWindow("My Image");
                                      // show the image on window
                                      cv::imshow("My Image", image);
                                      // wait key for 5000 ms
                                      cv::waitKey(5000);
                                  
                                      return 1;
                                  }
                                  

                                  .pro

                                  
                                  QT       += core
                                  
                                  QT       += gui
                                  QT       += widgets
                                  
                                  TARGET = NewOne
                                  CONFIG   += console
                                  CONFIG   -= app_bundle
                                  
                                  TEMPLATE = app
                                  
                                  SOURCES += main.cpp
                                  
                                  INCLUDEPATH += C:/OpenCV-2.3.1/install/include/
                                  
                                  LIBS += -LC:\OpenCV-2.3.1\lib\
                                      -lopencv_core2411 \
                                      -lopencv_highgui2411 \
                                      -lopencv_imgproc2411 \
                                      -lopencv_features2d2411\
                                      -lopencv_calib3d2411
                                  1 Reply Last reply
                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #26

                                    Then just to be sure: which Qt package are you using ?

                                    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
                                    0
                                    • TechnologistT Offline
                                      TechnologistT Offline
                                      Technologist
                                      wrote on last edited by Technologist
                                      #27

                                      The version is qt 5.4
                                      Using 64 bit os

                                      On a few directories I made them the version of the tutorial (OpenCV-2.3.1) to stay on track, but the overall version was 2.4.11 that was downloaded and installed.

                                      1 Reply Last reply
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