未找到文件main.obj

Question

我已经QT安装在我的电脑，它是使用Visual Studio 2010的编译器

我用一个简单的Hello World应用程序进行了测试，它工作正常。

但是现在我正尝试在QT中使用OpenCV。我已经安装了Visual Studio 2010 express和professional，并且opencv在那里工作得很好。但是，当我尝试运行QT OpenCV的，我得到以下错误

main.obj:-1: error: LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::deallocate(void)" (?deallocate@Mat@cv@@QAEXXZ) referenced in function "public: void __thiscall cv::Mat::release(void)" (?release@Mat@cv@@QAEXXZ) 

main.obj:-1: error: LNK2019: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) referenced in function "public: __thiscall cv::Mat::~Mat(void)" (??1Mat@cv@@QAE@XZ) 

main.obj:-1: error: LNK2019: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) referenced in function _main 

    main.obj:-1: error: LNK2019: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@@Z) referenced in function _main 

    main.obj:-1: error: LNK2019: unresolved external symbol "public: __thiscall cv::_InputArray::_InputArray(class cv::Mat const &)" (??0_InputArray@cv@@QAE@ABVMat@1@@Z) referenced in function _main 

    main.obj:-1: error: LNK2019: unresolved external symbol "void __cdecl cv::namedWindow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (?namedWindow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@H@Z) referenced in function _main 

    main.obj:-1: error: LNK2019: unresolved external symbol "class cv::Mat __cdecl cv::imread(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (?imread@cv@@YA?AVMat@1@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@H@Z) referenced in function _main 

    release\FirstProject.exe:-1: error: LNK1120: 7 unresolved externals 

以下是我FirstProject.pro文件的内容

#------------------------------------------------- 
# 
# Project created by QtCreator 2013-04-26T11:15:33 
# 
#------------------------------------------------- 

QT  += core 

QT  -= gui 

TARGET = FirstProject 
CONFIG += console 
CONFIG -= app_bundle 

TEMPLATE = app 


SOURCES += main.cpp 

INCLUDEPATH += C:\opencv\build\include\ 
LIBS += -LC:\opencv\build\x86\vc10\lib \ 
-lopencv_calib3d240d.lib\ 
-lopencv_contrib240d.lib\ 
-lopencv_core240d.lib\ 
-lopencv_features2d240d.lib\ 
-lopencv_flann240d.lib\ 
-lopencv_gpu240d.lib\ 
-lopencv_haartraining_engined.lib\ 
-lopencv_highgui240d.lib\ 
-lopencv_imgproc240d.lib\ 
-lopencv_legacy240d.lib\ 
-lopencv_ml240d.lib\ 
-lopencv_nonfree240d.lib\ 
-lopencv_objdetect240d.lib\ 
-lopencv_photo240d.lib\ 
-lopencv_stitching240d.lib\ 
-lopencv_ts240d.lib\ 
-lopencv_video240d.lib\ 
-lopencv_videostab240d.lib 

我试图chainging以下FirstProject。亲内容，但在所有

#------------------------------------------------- 
# 
# Project created by QtCreator 2013-04-26T11:15:33 
# 
#------------------------------------------------- 

QT  += core 

QT  -= gui 

TARGET = FirstProject 
CONFIG += console 
CONFIG -= app_bundle 

TEMPLATE = app 


SOURCES += main.cpp 

INCLUDEPATH += C:\opencv\build\include\ 
LIBS += -LC:\opencv\build\x86\vc10\lib \ 
-lopencv_core240 \ 
-lopencv_highgui240 \ 
-lopencv_imgproc240 \ 
-lopencv_features2d240 \ 
-lopencv_calib3d240 

下面没有好是我的代码

的main.cpp

#include <iostream> 
#include <opencv2/core/core.hpp> 
#include <opencv2/highgui/highgui.hpp> 

using namespace std; 
using namespace cv; 

int main() 
{ 

    Mat image = imread("D:/Tulips.jpg"); 

    if(!image.data) 
    { 
     cout << "Error loading image" << endl; 
    } 
    else 
    { 
     namedWindow("Image"); 
     imshow("Image",image); 
    } 

    waitKey(0); 
    return 0; 

} 

为什么会出现这个错误？请帮我摆脱这个问题

Answer 1

我找到了答案。解决此问题的唯一方法是逐个添加库，并使用完整路径

LIBS += C:/opencv/build/x86/vc9/lib/opencv_calib3d240.lib 
LIBS += C:/opencv/build/x86/vc9/lib/opencv_contrib240.lib 

Answer 2

QT项目文件试图统一处理文件/目录分隔符，即前向v的反斜杠。使用哪一个应该没有关系。但是，也许有一些翻译正在进行。

尝试用正向版本'/'替换所有反斜杠'\'。 Qmake会适当地转换它们。

替换-LC:/opencv/build/x86/vc10/lib

它也可能是您的INCLUDEPATH这就是问题的最终反斜杠。也许它正在加入下一行？