Code::Blocks и OpenCV, underfined reference to ... Опции

[Игорь]

Вобщем, пытаюсь пользоваться opencv, но не получается. Проблема вроде-как в линковке т.к. выползает очень много "underfined reference to".

Вот как настраивал (компилятор, кстати, MinGW):

1) Создал глобальную переменную cv, где:

base C:\CV\opencv
include $(#cv)\build\include
lib $(#cv)\build\x86\mingw\lib

2) Настроил компилятор:

Comp. and debug. --> Search dir. --> Compiler добавил $(#cv.include)
Comp. and debug. --> Search dir. --> Linker добавил $(#cv.lib)

Код (на C):

Спойлер (Показать/Скрыть)

#include <opencv/cv.h>
#include <opencv/highgui.h>

int main (int argc, char *argv[])
{

    int width = 640;
    int height = 480;

    CvPoint pt = cvPoint(height / 2, width / 2);

    IplImage* bkg = cvCreateImage(cvSize(height, width), 8, 3);

    cvSet(bkg,cvScalar(0, 0, 0, 0), NULL);

    CvFont font;

    cvInitFont(&font, CV_FONT_HERSHEY_COMPLEX,1.0, 1.0, 0, 1, CV_AA);

    cvPutText(bkg, "OpenCV Step By Step", pt, &font, CV_RGB(150, 0, 150));

    cvNamedWindow("Hello World", 0);

    cvShowImage("Hello World", bkg);

    cvWaitKey(0);

    cvReleaseImage(&bkg);

    cvDestroyWindow("Hello World");

    return 0;
}

Вывод:

Спойлер (Показать/Скрыть)

C:\CV\opencv\build\include\opencv2\core\types_c.h|311|warning: 'cvFloor' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|329|warning: 'cvCeil' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|349|warning: 'cvIsNaN' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|364|warning: 'cvIsInf' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|385|warning: 'cvRNG' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|401|warning: 'cvRandReal' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|715|warning: 'cvMat' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|745|warning: 'cvmGet' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|763|warning: 'cvmSet' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|780|warning: 'cvIplDepth' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|955|warning: 'cvRectToROI' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|968|warning: 'cvROIToRect' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|989|warning: 'cvTermCriteria' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1041|warning: 'cvPointTo32f' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1066|warning: 'cvPoint3D32f' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1086|warning: 'cvPoint2D64f' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1106|warning: 'cvPoint3D64f' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1145|warning: 'cvSize2D32f' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1221|warning: 'cvRealScalar' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1229|warning: 'cvScalarAll' defined but not used|
C:\CV\opencv\build\include\opencv2\core\types_c.h|1739|warning: 'cvAttrList' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|127|warning: 'cvDecRefData' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|148|warning: 'cvIncRefData' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|182|warning: 'cvGetRow' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|193|warning: 'cvGetCol' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|222|warning: 'cvReleaseMatND' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|245|warning: 'cvGetNextSparseNode' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|495|warning: 'cvSubS' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1057|warning: 'cvCloneSeq' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1100|warning: 'cvSetNew' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1115|warning: 'cvSetRemoveByPtr' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1130|warning: 'cvGetSetElem' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1302|warning: 'cvEllipseBox' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1398|warning: 'cvFont' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1601|warning: 'cvReadIntByName' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1616|warning: 'cvReadRealByName' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1630|warning: 'cvReadStringByName' defined but not used|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1642|warning: 'cvReadByName' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|373|warning: 'cvCreateSubdivDelaunay2D' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|408|warning: 'cvSubdiv2DNextEdge' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|414|warning: 'cvSubdiv2DRotateEdge' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|419|warning: 'cvSubdiv2DSymEdge' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|424|warning: 'cvSubdiv2DGetEdge' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|432|warning: 'cvSubdiv2DEdgeOrg' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|439|warning: 'cvSubdiv2DEdgeDst' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|446|warning: 'cvTriangleArea' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|468|warning: 'cvContourPerimeter' defined but not used|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|592|warning: 'cvCalcHist' defined but not used|
C:\CV\opencv\build\include\opencv2\features2d\features2d.hpp|66|warning: 'cvSURFPoint' defined but not used|
C:\CV\opencv\build\include\opencv2\features2d\features2d.hpp|146|warning: 'cvStarKeypoint' defined but not used|
C:\CV\opencv\build\include\opencv2\features2d\features2d.hpp|164|warning: 'cvStarDetectorParams' defined but not used|
C:\CV\opencv\build\include\opencv2\highgui\highgui_c.h|445|warning: 'CV_FOURCC' defined but not used|
obj\Debug\main.o||In function `cvDecRefData':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|134|undefined reference to `cvFree_'|
C:\CV\opencv\build\include\opencv2\core\core_c.h|142|undefined reference to `cvFree_'|
obj\Debug\main.o||In function `cvGetRow':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|184|undefined reference to `cvGetRows'|
obj\Debug\main.o||In function `cvGetCol':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|195|undefined reference to `cvGetCols'|
obj\Debug\main.o||In function `cvReleaseMatND':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|224|undefined reference to `cvReleaseMat'|
obj\Debug\main.o||In function `cvSubS':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|498|undefined reference to `cvAddS'|
obj\Debug\main.o||In function `cvCloneSeq':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1059|undefined reference to `cvSeqSlice'|
obj\Debug\main.o||In function `cvSetNew':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1110|undefined reference to `cvSetAdd'|
obj\Debug\main.o||In function `cvGetSetElem':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1132|undefined reference to `cvGetSeqElem'|
obj\Debug\main.o||In function `cvEllipseBox':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1310|undefined reference to `cvEllipse'|
obj\Debug\main.o||In function `cvFont':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1401|undefined reference to `cvInitFont'|
obj\Debug\main.o||In function `cvReadIntByName':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1604|undefined reference to `cvGetFileNodeByName'|
obj\Debug\main.o||In function `cvReadRealByName':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1619|undefined reference to `cvGetFileNodeByName'|
obj\Debug\main.o||In function `cvReadStringByName':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1633|undefined reference to `cvGetFileNodeByName'|
obj\Debug\main.o||In function `cvReadByName':|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1645|undefined reference to `cvGetFileNodeByName'|
C:\CV\opencv\build\include\opencv2\core\core_c.h|1645|undefined reference to `cvRead'|
obj\Debug\main.o||In function `cvCreateSubdivDelaunay2D':|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|375|undefined reference to `cvCreateSubdiv2D'|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|378|undefined reference to `cvInitSubdivDelaunay2D'|
obj\Debug\main.o||In function `cvContourPerimeter':|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|470|undefined reference to `cvArcLength'|
obj\Debug\main.o||In function `cvCalcHist':|
C:\CV\opencv\build\include\opencv2\imgproc\imgproc_c.h|596|undefined reference to `cvCalcArrHist'|
obj\Debug\main.o||In function `main':|
\OpenCV\main.c|12|undefined reference to `cvCreateImage'|
\OpenCV\main.c|14|undefined reference to `cvSet'|
\OpenCV\main.c|18|undefined reference to `cvInitFont'|
\OpenCV\main.c|20|undefined reference to `cvPutText'|
\OpenCV\main.c|22|undefined reference to `cvNamedWindow'|
\OpenCV\main.c|24|undefined reference to `cvShowImage'|
\OpenCV\main.c|26|undefined reference to `cvWaitKey'|
\OpenCV\main.c|28|undefined reference to `cvReleaseImage'|
\OpenCV\main.c|30|undefined reference to `cvDestroyWindow'|
||=== Build finished: 29 errors, 52 warnings ===|

Наверное опять что-то упустил.
В линуксе всё это как-то поще было по-моему.... Избаловал он меня....

[IUnknown]

теперь куча сообщений типа оно объявлено, но не используется

Это предупреждения, ничего страшного. Хотя и странно. У меня подобного нет. Скорее всего - потому что я использую g++, а не gcc, эти предупреждения появляются только в случае gcc

и при запуске жалуется, что libopencv_core231.dll не найден

А это... Ты в переменную окружения PATH прописал путь к папке с DLL-ками? Я прописывал. И при запуске простейшей программы:

#include <stdio.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>

int main(int argc, char* argv[])
{
	IplImage* img = cvLoadImage("F:\\test\\pic.jpg", CV_LOAD_IMAGE_UNCHANGED);
	if (!img) {
		printf("Error: Could not open the image file! \n");
		exit(1);
	}

	cvSmooth(img, img, CV_BLUR);
	cvSaveImage("F:\\test\\blurred.jpg", img);

	cvReleaseImage(&img);
	return 0;
}

в папке наблюдаю замутненное изображение.