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OpenCV 2.3编译失败，出现未定义引用错误。

c++netbeansopencvcygwinmingw
4
我正在Windows 7 64位和Netbeans 7.0中使用OpenCV。我尝试使用MinGW和cygwin编译下面的代码，但两者都无法识别引用。
当我使用MAT或FLANN等其他库时，无法编译，但我已添加所有库（我尝试仅添加Debug版、Release版、只需版...但都失败了）。
在Ubuntu上相同的代码可以工作，但我也需要在Windows上编译它。我正在使用编译版本为2.3的（使用CMake）和可安装版本。
#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)

尝试使用MinGW库：
"/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)

或者

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

相同的结果。

3个回答
3
我猜问题在于库路径指向了vc10目录（-L/cygdrive/C/OpenCV2.3/build/x86/vc10/lib）而不是mingw目录（-L/cygdrive/C/OpenCV2.3/build/x86/mingw/lib）。链接器无法找到方法，因为它们被vc++的“link.exe”编译。如果您使用64位，则还需要链接64位库：-L/cygdrive/C/OpenCV2.3/build/x64/mingw/lib。
你使用的是64位Windows吗？那么你必须链接到64位构建：-L/cygdrive/C/OpenCV2.3/build/x64/mingw/lib。 - vstm
使用64位库只是为了优化，但我已经尝试过了，仍然出现相同的错误。再次感谢。 - Wiliam
3

您是否使用了预编译的MinGW库？（看起来是这样的）我试了几天时间在Code::Blocks下成功链接我的项目。我看到您描述的同样错误（坏引用等）。

最终，我按照此处所示的步骤重新编译了OpenCV，并一切都变得好了。

哎呀，我在使用Windows 7，之前尝试过一些操作，除了cv::Mat或cv:flann等内容外，其他都可以正常工作。现在我正在添加这些库...好吧，我打算尝试使用MinGW而不是VS10来编译它们。 - Wiliam
0

我有完全相同的问题。我正在尝试在64位Windows 7机器上使用MinGW编译我的程序。以下是可能导致问题的几种情况：

1）您需要确保链接OpenCV2.3/build/x64/mingw/lib。小心，不要将项目链接到Visual Studio或x86的库。

2）确保适当的dll已复制到项目目录中，或已添加到PATH中。例如，如果您使用此库libopencv_core243.dll.a，则应确保可以通过项目加载libopencv_core243.dll。这不是问题的原因。但我认为这也很重要。

3) 确保MinGW可以编译x64程序。这是我使用的：mingw-w64（但由于mingw-w64项目正在迁移到mingw-w64.org，最好使用新网站）。不幸的是，从MinGW32下载的那个不起作用。而从MinGW的官方网站链接会带你到第二个（MinGW32）。

4) 默认情况下，MinGw可能会将您的项目编译为32位程序。为了确保它编译为64位，请添加此编译标志-m64。否则，如果您只链接所有64位库的项目，也会导致问题。

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