How to build and use openCV with Netbeans 7.2 . Step by step
Preparations
In the "c:\mingw\bin" and "c:\mingw\lib"
- Search and delete all libopencv*.dll , libopencv*.dll.a , libopencv*.a
Tested with the following programs
Download OpenCV-2.4.2.exe (222.9 MB) http://sourceforge.net/projects/opencvlibrary/files/
Download mingw-get-inst-20120426.exe (662.7 kB) http://sourceforge.net/projects/mingw/files/
Download cmake-2.8.9-win32-x86.zip http://www.cmake.org/files/v2.8/cmake-2.8.9-win32-x86.zip
All references used in this manual:
All references in this manual begin with "T: \". Please change to the actual drive letter! ( mostly "c:\" )
- C:\msys\1.0\src --- (If no "msys" exists, create or use
"C:\mingw\src").
- C:\mingw\bin
Note:
I use for new projects in the msys-mingw environment always the "C:\msys\1.0\src" directory.
To have the same conditions, gcc should also be "4.7.0" not "4.6.2"
- Put at the front of your PATH "C:\mingw\bin;C:\msys\1.0\bin;"
As you've probably noticed, you can not use the libraries that come with OpenCV-2.4.2.exe.
Ignore so the folder "...\opencv\build\x86\mingw\bin" and "...\opencv\build\x86\mingw\lib" completely.
Let's get the new mingw files.
Start mingw-get-inst-20120426.exe
Use : Download latest repository ...
Make sure that the specified directory is correct, usually "C:\mingw".
Check as described below.
If you also need msys, then also select "MinGW Developer Toolkit".
Now MinGW-Get downloads all new files. ( 4.7.0 )
Run "OpenCV-2.4.2.exe".
The folder where the files go should be "c:\msys\1.0\src".
That writes all the files in the new directory "opencv".
The new folder : "C:\msys\1.0\src\opencv". From now on, this is our top-level directory
Open "cmake-2.8.9-win32-x86.zip" and copy the files to your cmake folder.
Creating the Makefiles
Run "C:\cmake\bin\cmake-gui.exe"
- A: Set the required fields, click "configure"
B: Set, click "next"
Set and click "ok"
A possible error: sh.exe was found in your PATH
A possible error: CMAKE_MAKE_PROGRAM is not set
- mark "CMAKE_MAKE_PROGRAM" and copy, click "Add Entry"
- Paste, Set and click "ok"
- click "configure" again.
Now it should work. Cmake searches the compiler environment
Cmake shows the option page
- Scroll through the red options. Don't change anything
- click "configure" again
Let's generate the Makefiles
Building openCV
- Run "cmd" go to the directory "C:\msys\1.0\src\opencv\build\mingw". There typing "make"
Please wait!
It takes about 4 hours on my computer
Check that all files are in the right place
- B: *.dll in "C:\msys\1.0\src\opencv\build\mingw\bin"
- C: *.dll.a in "C:\msys\1.0\src\opencv\build\mingw\lib"
Building an opencv program
- create a new folder "OpenCV-MakeC" in "C:\msys\1.0\src\opencv"
- create in the folder "OpenCV-MakeC" a "Makefile" and "imgdisplay.cpp".
To avoid copy and paste error. Here are the 2 files for download:
Makefile
MKDIR_P = C:/msys/1.0/bin/mkdir -p
DESTDIRB = build/Debug
DESTDIRD = dist/Debug
LIBDIRCV = ../build/mingw/lib
CFLAGS = -O2
CXX = C:/mingw/bin/g++.exe
Applic = imgdisplay
ALL: imgdisd
imgdisd:
$(CXX) $(CFLAGS) -c -g $(Applic).cpp -I../build/include -MMD -MP -MF $(DESTDIRB)/$(Applic).o.d -o $(DESTDIRB)/$(Applic).o
$(CXX) $(CFLAGS) -o $(DESTDIRD)/$(Applic) $(DESTDIRB)/$(Applic).o -L../build/mingw/bin $(LIBDIRCV)/libopencv_calib3d242.dll.a $(LIBDIRCV)/libopencv_contrib242.dll.a $(LIBDIRCV)/libopencv_core242.dll.a \
$(LIBDIRCV)/libopencv_features2d242.dll.a $(LIBDIRCV)/libopencv_flann242.dll.a $(LIBDIRCV)/libopencv_gpu242.dll.a $(LIBDIRCV)/libopencv_highgui242.dll.a $(LIBDIRCV)/libopencv_imgproc242.dll.a \
$(LIBDIRCV)/libopencv_legacy242.dll.a $(LIBDIRCV)/libopencv_ml242.dll.a $(LIBDIRCV)/libopencv_nonfree242.dll.a $(LIBDIRCV)/libopencv_objdetect242.dll.a $(LIBDIRCV)/libopencv_photo242.dll.a \
$(LIBDIRCV)/libopencv_stitching242.dll.a $(LIBDIRCV)/libopencv_ts242.a $(LIBDIRCV)/libopencv_video242.dll.a $(LIBDIRCV)/libopencv_videostab242.dll.a
md:
$(MKDIR_P) "$(DESTDIRB)"
$(MKDIR_P) "$(DESTDIRD)"
imgdisplay.cpp
/*
* File: imgdisplay.cpp
* Author: Administrator
*
* Created on 14. September 2012, 01:12
*/
#include <cstdlib>
#include <opencv/cv.h>
#include <opencv/highgui.h>
using namespace std;
int main( int argc, char* argv[] )
{
cvNamedWindow("mainWin", CV_WINDOW_AUTOSIZE);
cvMoveWindow("mainWin", 100, 100);
IplImage* img;
img = cvLoadImage("D:/grafik/Lightroom/light01.jpg");
if (!img) {
std::cout << "Could not open the image file" << std::endl;
return -1;
}
cvShowImage("My Picture", img);
cvWaitKey(0);
cvReleaseImage(&img);
return 0;
}
Netbeans 7.2 create a project
Use settings as described below.
Created Project
Create a new target
- Click with the right mouse button on "Makefile"
Note: If you get an error : Makefile:12: *** missing separator. Stop.
Mostly a copy and paste error ! (Make sure no spaces at the start lines. But 2 tab set).
Create new folder
- Click with the right mouse button on "Makefile"
- Use the new target "md"
The projects folder now looks like ..
Build the project
Debug the project
- Copy needed dll's ( C:\msys\1.0\src\opencv\build\mingw\bin to T:\msys\1.0\src\opencv\OpenCV-MakeC\dist\Debug)
Program stops on Line 17
Unresolved Identifier
If the source of the .cpp file looks like this
Click with the right mouse button on your project.
Check C/C++ Code As...
Run Reparse Project.
If that is not enough.
Go to Project Properties
Fill in the Include input field as described.
Clean Up
- If you renamed sh.exe to shxx.exe ! Rename it back !
- If you have spaces in your PATH Variable, put quotation marks around spaces (only around relevant programs like visual studio and so).
I know that they are not necessary but one or two programs can't handle the spaces
in the PATH !!
- On a
