OpenCV的2.3不能編譯，未定義的引用錯誤

Question

我在Windows 7 64位和Netbeans 7.0中使用的OpenCV。我試着使用MinGW和cygwin編譯下一個代碼，但是兩個都失敗並導致未定義的引用。

當我使用MAT或FLANN和其他人我不能編譯，但我將所有的庫（我試過只增加調試者，發佈者，才需要的...但失敗）。

在Ubuntu相同的代碼工作，但我需要編譯它在Windows了。我使用2.3編譯版本（使用CMake）和可安裝版本。

#include "opencv2\opencv.hpp" 
#include <iostream> 

using namespace std; 

int main(void) 
{ 
    cv::Mat::eye(1, 1, 0); 

    return 0; 
} 

---

"/usr/bin/make" -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .clean-conf 
make[1]: Entering directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 
rm -f -r build/Release 
rm -f dist/Release/Cygwin-Windows/opencv23sandbox.exe 
make[1]: Leaving directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 

CLEAN SUCCESSFUL (total time: 1s) 
"/usr/bin/make" -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .build-conf 
make[1]: Entering directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 
"/usr/bin/make" -f nbproject/Makefile-Release.mk dist/Release/Cygwin-Windows/opencv23sandbox.exe 
make[2]: Entering directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 
mkdir -p build/Release/Cygwin-Windows 
rm -f build/Release/Cygwin-Windows/main.o.d 
g++.exe -c -O2 -I/cygdrive/C/OpenCV2.3/build/include -MMD -MP -MF build/Release/Cygwin-Windows/main.o.d -o build/Release/Cygwin-Windows/main.o main.cpp 
mkdir -p dist/Release/Cygwin-Windows 
g++.exe  -o dist/Release/Cygwin-Windows/opencv23sandbox build/Release/Cygwin-Windows/main.o -L/cygdrive/C/OpenCV2.3/build/x86/vc10/lib -lopencv_calib3d230 -lopencv_calib3d230d -lopencv_contrib230 -lopencv_contrib230d -lopencv_core230 -lopencv_core230d -lopencv_features2d230 -lopencv_features2d230d -lopencv_flann230 -lopencv_flann230d -lopencv_gpu230 -lopencv_gpu230d -lopencv_haartraining_engine -lopencv_haartraining_engined -lopencv_highgui230 -lopencv_highgui230d -lopencv_imgproc230 -lopencv_imgproc230d -lopencv_legacy230 -lopencv_legacy230d -lopencv_ml230 -lopencv_ml230d -lopencv_objdetect230 -lopencv_objdetect230d -lopencv_video230 -lopencv_video230d 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0xac): undefined reference to `cv::Mat::eye(int, int, int)' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x106): undefined reference to `cv::fastFree(void*)' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x16f): undefined reference to `cv::fastFree(void*)' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x1dd): undefined reference to `cv::fastFree(void*)' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x1fa): undefined reference to `cv::Mat::deallocate()' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x20a): undefined reference to `cv::Mat::deallocate()' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text+0x21a): undefined reference to `cv::Mat::deallocate()' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text$_ZN2cv3MatD1Ev[cv::Mat::~Mat()]+0x66): undefined reference to `cv::Mat::deallocate()' 
build/Release/Cygwin-Windows/main.o:main.cpp:(.text$_ZN2cv3MatD1Ev[cv::Mat::~Mat()]+0x5e): undefined reference to `cv::fastFree(void*)' 
collect2: ld returned 1make[2]: Leaving directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 
make[1]: Leaving directory `/cygdrive/f/Proyectos/C++/OpenCV23Sandbox' 
exit status 
make[2]: *** [dist/Release/Cygwin-Windows/opencv23sandbox.exe] Error 1 
make[1]: *** [.build-conf] Error 2 
make: *** [.build-impl] Error 2 

BUILD FAILED (exit value 2, total time: 2s) 

---

使用MinGW庫試圖：

"/bin/make" -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .clean-conf 
make[1]: Entering directory `/f/Proyectos/C++/OpenCV23Sandbox' 
rm -f -r build/Release 
rm -f dist/Release/MinGW-Windows/opencv23sandbox.exe 
make[1]: Leaving directory `/f/Proyectos/C++/OpenCV23Sandbox' 

CLEAN SUCCESSFUL (total time: 350ms) 
"/bin/make" -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .build-conf 
make[1]: Entering directory `/f/Proyectos/C++/OpenCV23Sandbox' 
"/bin/make" -f nbproject/Makefile-Release.mk dist/Release/MinGW-Windows/opencv23sandbox.exe 
make[2]: Entering directory `/f/Proyectos/C++/OpenCV23Sandbox' 
mkdir -p build/Release/MinGW-Windows 
rm -f build/Release/MinGW-Windows/main.o.d 
g++.exe -c -O2 -I/C/OpenCV2.3/build/include -MMD -MP -MF build/Release/MinGW-Windows/main.o.d -o build/Release/MinGW-Windows/main.o main.cpp 
mkdir -p dist/Release/MinGW-Windows 
g++.exe  -o dist/Release/MinGW-Windows/opencv23sandbox build/Release/MinGW-Windows/main.o -L../OpenCV/OpenCV2.3/build/x86/mingw/lib ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_calib3d230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_contrib230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_core230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_features2d230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_flann230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_gpu230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_highgui230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_imgproc230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_legacy230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_ml230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_objdetect230.dll.a ../OpenCV/OpenCV2.3/build/x86/mingw/lib/libopencv_video230.dll.a 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x4f): undefined reference to `cv::Mat::eye(int, int, int)' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0xac): undefined reference to `cv::fastFree(void*)' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x11a): undefined reference to `cv::fastFree(void*)' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x191): undefined reference to `cv::fastFree(void*)' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x1a7): undefined reference to `cv::Mat::deallocate()' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x1ba): undefined reference to `cv::Mat::deallocate()' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text+0x1ce): undefined reference to `cv::Mat::deallocate()' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text$_ZN2cv3MatD1Ev[cv::Mat::~Mat()]+0x74): undefined reference to `cv::Mat::deallocate()' 
build/Release/MinGW-Windows/main.o:main.cpp:(.text$_ZN2cv3MatD1Ev[cv::Mat::~Mat()]+0x63): undefined reference to `cv::fastFree(void*)' 
collect2: ld returned 1 exit status 
make[2]: Leaving directory `/f/Proyectos/C++/OpenCV23Sandbox' 
make[1]: Leaving directory `/f/Proyectos/C++/OpenCV23Sandbox' 
make[2]: *** [dist/Release/MinGW-Windows/opencv23sandbox.exe] Error 1 
make[1]: *** [.build-conf] Error 2 
make: *** [.build-impl] Error 2 

BUILD FAILED (exit value 2, total time: 1s) 

或

g++.exe  -o dist/Release/MinGW-Windows/opencv23sandbox build/Release/MinGW-Windows/main.o -L../OpenCV/OpenCV2.3/build/x86/mingw/lib -lopencv_calib3d230.dll -lopencv_contrib230.dll -lopencv_core230.dll -lopencv_features2d230.dll -lopencv_flann230.dll -lopencv_gpu230.dll -lopencv_highgui230.dll -lopencv_imgproc230.dll -lopencv_legacy230.dll -lopencv_ml230.dll -lopencv_objdetect230.dll -lopencv_video230.dll 

相同的結果。

Answer 1

你使用預編譯的MinGW庫嗎？ （看起來如此）。我嘗試了幾天，讓我的項目在Code :: Blocks下成功鏈接。我看到了你描述的相同類型的錯誤（錯誤的引用等）。

我終於重新編譯的OpenCV使用here所示的步驟，都成了很好。

Answer 2

我想問題是庫路徑指向vc10目錄（-L/cygdrive/C/OpenCV2.3/build/x86/vc10/lib）而不是mingw目錄（-L/cygdrive/C/OpenCV2.3/build/x86/mingw/lib）。 ld-linker找不到方法，因爲它們被vC++「link.exe」損壞。

如果您使用64位，那麼您也可以鏈接到64位庫： -L/cygdrive/C/OpenCV2.3/build/x64/mingw/lib。

Answer 3

我有完全相同的問題。我想用MinGW在64位Windows 7機器下編譯我的程序。下面是幾種可能性，可能導致問題：

1）你必須確保OpenCV2.3/build/x64/mingw/lib鏈接。請小心，不要將項目鏈接到Visual Studio的庫或x86的libs庫。

2）確保正確的dll被複制到項目目錄，或者已被添加到PATH。例如，如果你使用這個lib libopencv_core243.dll.a，你應該確保libopencv_core243.dll可以被項目加載。這不是問題的原因。但我認爲知道這一點也很重要。

3）確保MinGW的可以編譯x64程序。這是我使用的：mingw-w64（但是因爲mingw-w64項目正在轉向mingw-w64.org，所以最好使用新網站）。不幸的是，從MinGW32下載的那個不起作用。 MinGW的official site的鏈接將帶你到第二個（MinGW32）。

4）默認情況下，MinGw可能會將您的項目編譯爲32位程序。爲了確保它編譯爲64位，請添加此編譯標誌-m64。否則，如果您只將項目與所有64位庫鏈接，則也會導致該問題。