👀 MinGW 32bit and 64bit version of OpenCV compiled on Windows. Including OpenCV 3.3.1, 3.4.1, 3.4.1-x64, 3.4.5, 3.4.6, 3.4.7, 3.4.8-x64, 3.4.9, 4.0.0-alpha-x64, 4.0.0-rc-x64, 4.0.1-x64, 4.1.0, 4.1.0-x64, 4.1.1-x64, 4.5.0-with-contrib, 4.5.2-x64
Home Page: https://opencv.org/
hi can you please share OpenCv v4 build for x32 for QT mingw730_32 as i noticed all opencv 4 builds are for x64
thanks
Hi,
I'm trying to compile my simple program to capture video frame, using msys mingw64. Currently I get this error:
# make
x86_64-pc-msys-g++ -I../opencv4.5.5/include -Iinclude -L../opencv4.5.5/x64/mingw/bin -lopencv_videoio_ffmpeg455_64 -lopencv_video455 -lopencv_videoio455 -lopencv_imgproc455 -lopencv_highgui455 -lopencv_imgcodecs455 -lopencv_core455 -g -O0 -o sample main.cpp
/usr/lib/gcc/x86_64-pc-msys/11.3.0/../../../../x86_64-pc-msys/bin/ld: /tmp/ccfOqfBU.o:/e/dense_flow/structure_from_video/main.cpp:138: undefined reference to `cv::VideoCapture::VideoCapture(std::string const&, int)'
collect2: error: ld returned 1 exit status
make: *** [Makefile:9: sample] Error 1
Tried with OpenCV 4.5.5, 4.1.0, 3.8.4. Nothing worked.
Hi hope you doing well
i wonder can you please build opencv 4 x86 with flag = OPENCV_ENABLE_NONFREE
also can you upload your app : https://github.com/avamoe/Avalive to gog.com i tried to buy it on steam but steam have strange country lock issue will not let me buy because of different steam account country and paypal . so will be thankful if u can upload to gog.com i would love to buy it
thanks
Hi, huihut.
Can you provide the compilation of OpenCV4.4?
If you can add the opencv_contrib4.4 extension library module to compile, it would be even better.
Looking forward to OpenCV4.4！
CMakeFiles\cv.dir/objects.a(main.cpp.obj): In function main': C:/Users/Administrator/Desktop/cv/main.cpp:8: undefined reference to cv::imread(std::string const&, int)'
C:/Users/Administrator/Desktop/cv/main.cpp:13: undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[3]: *** [CMakeFiles\cv.dir\build.make:111: cv.exe] Error 1
mingw32-make.exe[2]: *** [CMakeFiles\Makefile2:95: CMakeFiles/cv.dir/all] Error 2
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:102: CMakeFiles/cv.dir/rule] Error 2
mingw32-make.exe: *** [Makefile:137: cv] Error 2
Hi,
Thanks for the job!
I downloaded the zip files for multiple non-x64 versions of openCV on your release age.
Unfortunately, in the build dir, there are only "x64/" subdir version?
Do you compile any x86 version for mingW? (I'm using mingw included in Code::Blocks and it's the 32bits version)
编译环境：
作者提供的编译工具包
这是我的makefile：
INCLUDES = -I. -ID:\OpenCV-4.1.1\include
# opencv 主要模块 core,imgproc,highgui,imgcodecs,videoio(注意和video的区别),calib3d,feature2d,video,objdetect,dnn,ml,gapi,cuda
# LIBS = -lopencv_core420 -lopencv_imgcodecs420
LIBDIRS = -L. -LD:\OpenCV-4.1.1\x64\mingw\bin
LIBS = -lopencv_core411 -lopencv_imgcodecs411
# OPT = -O3 -Wno-deprecated
CC=g++
# % 表示匹配当前目录下的所有文件,$@ 代表规则中的目标,$< 指代第一个依赖条件,$^ 指代所有的依赖条件,$+ 与 $^ 相似，只是其不会去除重复的部分。
a:*.cpp
$(CC) $+ $(INCLUDES) $(LIBDIRS) $(LIBS) -o $@ $(OPT)
.PHONY: all clean
clean:
rm -f *.o
all:
echo make complete
这是我的main.cpp:
#include<opencv2/core.hpp>
#include<opencv2/imgcodecs.hpp>
#include<iostream>
using namespace std;
using namespace cv;
int main()
{
cv::Mat a;
a = cv::imread("1.png");
cout<<a<<endl;
}
这是执行输出的a.exe得到的结果：
无法定位程序输入点
_ZNSt6thread15_M_start_threadESt10unique_ptrINS_6_StateESt1
4default_deleteIS1_EEPFvvE 于动态链接库
D:\OpenCV-4.1.1\x64\mingw\bin\libopencv_imgcodecs411.dll
上。
I am completely noob on c++
I have cloned your repo x64 version
And when I run this command I get the error.
g++ ./src/main.cpp -I C:/OpenCV-MinGW-Build-OpenCV-3.4.1-x64/include -L C:/OpenCV-MinGW-Build-OpenCV-3.4.1-x64/x64/mingw/lib -llibopencv_core341 -llibopencv_highgui341 -o app
> Executing task: g++ ./src/main.cpp -I C:/OpenCV-MinGW-Build-OpenCV-3.4.1-x64/include -L C:/OpenCV-MinGW-Build-OpenCV-3.4.1-x64/x64/mingw/lib -llibopencv_core341 -llibopencv_highgui341 -o app <
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text+0x51): undefined reference to `cv::imread(cv::String const&, int)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text+0xa2): undefined reference to `cv::namedWindow(cv::String const&, int)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text+0x119): undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text+0x139): undefined reference to `cv::waitKey(int)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text$_ZN2cv6StringC1EPKc[__ZN2cv6StringC1EPKc]+0x42): undefined reference to `cv::String::allocate(unsigned int)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text$_ZN2cv6StringD1Ev[__ZN2cv6StringD1Ev]+0xf): undefined reference to `cv::String::deallocate()'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text$_ZN2cv3MatD1Ev[__ZN2cv3MatD1Ev]+0x2d): undefined reference to `cv::fastFree(void*)'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text$_ZN2cv3Mat7releaseEv[__ZN2cv3Mat7releaseEv]+0x40): undefined reference to `cv::Mat::deallocate()'
C:\Users\giorg\AppData\Local\Temp\ccVLePpF.o:main.cpp:(.text$_ZN2cv3MataSEOS0_[__ZN2cv3MataSEOS0_]+0xb4): undefined reference to `cv::fastFree(void*)'
collect2.exe: error: ld returned 1 exit status
The terminal process terminated with exit code: 1
Terminal will be reused by tasks, press any key to close it.
I'm mainly targeting x86_64-pc-windows-gnu these days. And I get linking errors from rust with the 32bit due to the eh vs sjlj difference.
test.cpp:1:9: fatal error: opencv2/core/core.hpp: No such file or directory
#include<opencv2/core/core.hpp>
^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
how to compile the opencv with mingw64 build using gcc/g++ compiler?
please provide a opencv4.0 final release version, thanks~~
Hi,
Is is possible to have a 64bits version of opencv4?
Thanks
thank you my brother.
hope you can support mingw530_32 mingw810_32, and 64bit for QT dev enviroment.
What's the version of the mingw/qt you use?
例如3.4.5版是以345结尾的，4.0.1不应该是401吗……
git clone -b OpenCV-4.1.1-x64 [email protected]:huihut/OpenCV-MinGW-Build.git
Cloning into 'OpenCV-MinGW-Build'...
[email protected]: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
The following command worked,
git clone -b OpenCV-4.1.1-x64 --single-branch https://github.com/huihut/OpenCV-MinGW-Build.git
还说缺少 QtCore.dll ，为什么要用到 Qt 库才能运行？
请问是因为编译器不同的选择吗，我用的是mingw 64
The latest 3.4 release has some bug fixes in the dnn library that are very useful, would really appreciate if you could build it :)
请问vc版的**_world452.dll文件在这版mingw版中应该用什么去替代呢
Hello, It's nice to see you created build result of opencv 4.0.1 for MinGW, however i got error lib not exist like picture shown below, but it solved so i just put this issue here and close it (in case someone got same error like mine)
D:/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_face401
D:/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_xfeatures2d401
D:/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_plot401
D:/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_tracking401
D:/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_img_hash401
collect2.exe: error: ld returned 1 exit status
so i tried to build them from source, then i found some libs is not exist in your build
i hope you update the build result, thank you
m:/work/tool/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.2/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_face410
m:/work/tool/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.2/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_xfeatures2d410
m:/work/tool/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.2/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_plot410
m:/work/tool/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.2/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_tracking410
m:/work/tool/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.8.2/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lopencv_img_hash410
Using: msys2
$ uname -a
MINGW64_NT-10.0 gion-pc 2.11.2(0.329/5/3) 2018-11-26 09:22 x86_64 Msys
$ python3 --version
Python 3.7.0
I have installed it using:
istoica@gion-pc MINGW64 /W/Workspace/OpenCV-MinGW-Build-OpenCV-4.0.1-x64/python
$ python3 setup.py install
running install
running bdist_egg
running egg_info
writing opencv.egg-info/PKG-INFO
writing dependency_links to opencv.egg-info/dependency_links.txt
writing requirements to opencv.egg-info/requires.txt
writing top-level names to opencv.egg-info/top_level.txt
reading manifest file 'opencv.egg-info/SOURCES.txt'
writing manifest file 'opencv.egg-info/SOURCES.txt'
installing library code to build/bdist.mingw/egg
running install_lib
running build_py
creating build/bdist.mingw/egg
creating build/bdist.mingw/egg/cv2
copying build/lib/cv2/config.py -> build/bdist.mingw/egg/cv2
copying build/lib/cv2/load_config_py2.py -> build/bdist.mingw/egg/cv2
copying build/lib/cv2/load_config_py3.py -> build/bdist.mingw/egg/cv2
copying build/lib/cv2/__init__.py -> build/bdist.mingw/egg/cv2
byte-compiling build/bdist.mingw/egg/cv2/config.py to config.cpython-37.pyc
byte-compiling build/bdist.mingw/egg/cv2/load_config_py2.py to load_config_py2.cpython-37.pyc
byte-compiling build/bdist.mingw/egg/cv2/load_config_py3.py to load_config_py3.cpython-37.pyc
byte-compiling build/bdist.mingw/egg/cv2/__init__.py to __init__.cpython-37.pyc
creating build/bdist.mingw/egg/EGG-INFO
copying opencv.egg-info/PKG-INFO -> build/bdist.mingw/egg/EGG-INFO
copying opencv.egg-info/SOURCES.txt -> build/bdist.mingw/egg/EGG-INFO
copying opencv.egg-info/dependency_links.txt -> build/bdist.mingw/egg/EGG-INFO
copying opencv.egg-info/requires.txt -> build/bdist.mingw/egg/EGG-INFO
copying opencv.egg-info/top_level.txt -> build/bdist.mingw/egg/EGG-INFO
zip_safe flag not set; analyzing archive contents...
cv2.__pycache__.__init__.cpython-37: module references __file__
creating 'dist/opencv-4.0.0-py3.7.egg' and adding 'build/bdist.mingw/egg' to it
removing 'build/bdist.mingw/egg' (and everything under it)
Processing opencv-4.0.0-py3.7.egg
removing 'W:/sdks/msys2/mingw64/lib/python3.7/site-packages/opencv-4.0.0-py3.7.egg' (and everything under it)
creating W:/sdks/msys2/mingw64/lib/python3.7/site-packages/opencv-4.0.0-py3.7.egg
Extracting opencv-4.0.0-py3.7.egg to W:/sdks/msys2/mingw64/lib/python3.7/site-packages
opencv 4.0.0 is already the active version in easy-install.pth
Installed w:/sdks/msys2/mingw64/lib/python3.7/site-packages/opencv-4.0.0-py3.7.egg
Processing dependencies for opencv==4.0.0
Searching for numpy==1.15.0
Best match: numpy 1.15.0
Adding numpy 1.15.0 to easy-install.pth file
Installing conv-template-script.py script to W:/SDKs/msys2/mingw64/bin
Installing conv-template.exe script to W:/SDKs/msys2/mingw64/bin
Installing f2py-script.py script to W:/SDKs/msys2/mingw64/bin
Installing f2py.exe script to W:/SDKs/msys2/mingw64/bin
Installing from-template-script.py script to W:/SDKs/msys2/mingw64/bin
Installing from-template.exe script to W:/SDKs/msys2/mingw64/bin
Using w:/sdks/msys2/mingw64/lib/python3.7/site-packages
Finished processing dependencies for opencv==4.0.0
But I get this output, unable to import cv2:
$ python3
Python 3.7.0 (default, Aug 3 2018, 11:56:18) [GCC 8.2.0 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "W:/Workspace/OpenCV-MinGW-Build-OpenCV-4.0.1-x64/python\cv2\__init__.py", line 89, in <module>
bootstrap()
File "W:/Workspace/OpenCV-MinGW-Build-OpenCV-4.0.1-x64/python\cv2\__init__.py", line 62, in bootstrap
], True)
File "W:/Workspace/OpenCV-MinGW-Build-OpenCV-4.0.1-x64/python\cv2\__init__.py", line 56, in load_first_config
raise ImportError('OpenCV loader: missing configuration file: {}. Check OpenCV installation.'.format(fnames))
ImportError: OpenCV loader: missing configuration file: ['config-3.7.py', 'config-3.py']. Check OpenCV installation.
What must I do to get it working ?
Getting undefined references since Qt now uses MinGW 7.3.0
undefined reference to `cv::CascadeClassifier::load(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)'
I'm a new learner to OpenCV in Mingw. Could you please tell me how to install the complied opencv ? My g++ tell me it couldn't find opencv.hpp
I have tried some versions like 3.4.9 and 4.1.1. Things work well with opencv objects like:
// cv_test.cpp main()
Point3d all_points[][2] = {
Point3d( 0.0, 0.0, 0.0 ),
Point3d( 1.0, 0.0, 0.0 ),
Point3d( 0.0, 2.0, 0.0 ),
Point3d( 1.0, 1.0, 0.0 ),
Point3d( 0.0, -2.0, 0.0 ),
Point3d( 1.0, -1.0, 0.0 ),
};
cv::Mat tmp = cv::Mat::zeros(512, 512, CV_8UC1);
However, when it comes to imread() and imshow(), I can still compile my program successfully, but running the exe, it crashes immediately. I guess it is about the dynamic link library...
// cv_test.cpp main()
cv::Mat my_pic = cv::imread("./my_pic.png", cv::IMREAD_GRAYSCALE);
cv::imshow("my_pic", my_pic);
// gdb output
(gdb) start
During startup program exited with code 0xc0000135
I Tried Using addText() Function With A QtFont Parameter But It Resulted In This Error!
So I Think We Need The OpenCV With Qt Support.
OpenCV: terminate handler is called! The last OpenCV error is:
OpenCV(4.5.5-dev) Error: The function/feature is not implemented (The library is compiled without QT support) in fontQt, file C:\Users\m8317\Downloads\opencv_mingw\opencv\modules\highgui\src\window.cpp, line 1175
我按你的教程自己编译了 OpenCV 3.4.8x64，fork地址在这里。不知道是否可以把我编译的pull request提交进来，兴许可以节约一些时间hhh？但我没权限开新分支，可能需要你开个分支我才能提交。
教程写得非常详尽！感谢XD！
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