用Eclipse進行C編程（庫之謎）

Question

當我將庫連接到我的程序時，Eclipse不會生成任何可執行文件，我只能得到一個對象文件。 當我從程序斷開庫（刪除所有路徑和庫函數）時，我得到一個可執行文件。

但是，在第一種情況下我沒有收到任何錯誤。

什麼問題？

我使用：Linux，C，Eclipse。

日誌：項目Wise_test_C ****

make all 
Building target: Wise_test_C 
Invoking: GCC C Linker 
gcc -L"/export/home/pdmazubi3/workspace/WISE_C/Debug" -o"Wise_test_C" ./src/Wise_test_C.o -lWISE_C 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetRawData' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvPow' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCreateGraphScanner' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `sqrt' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvColorToScalar' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `Fuzzy10' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvExp' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvTransform' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvReleaseMat' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvAddS' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvHoughLines2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSetAdd' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvAvgSdv' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvError' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSeqSlice' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `floor' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCircle' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetCols' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvLoadImage' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvAlloc' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvRead' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFitLine' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvUndistort2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvLog' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFree_' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCreateImage' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCalcEMD2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetElemType' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvPolyLine' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFitEllipse2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvBoundingRect' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvPerspectiveTransform' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCalcArrHist' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCalibrateCamera2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `Fuzzy24' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvInvert' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvAvg' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSum' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvProjectPoints2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSet' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFindExtrinsicCameraParams2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvRandArr' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvReshape' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetSeqElem' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvBoxPoints' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSetImageROI' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvMinAreaRect2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvInitSubdivDelaunay2D' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFindFundamentalMat' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSet2D' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCvtColor' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvLine' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvReleaseGraphScanner' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvRodrigues2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvKMeans2' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvEllipse' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvInitFont' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvResetImageROI' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGet2D' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCreateMat' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvFindChessboardCorners' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetFileNodeByName' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvSplit' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCartToPolar' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvGetRows' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvCreateSubdiv2D' 
/export/home/pdmazubi3/workspace/WISE_C/Debug/libWISE_C.so: undefined reference to `cvConvexHull2' 
collect2: ld returned 1 exit status 
make: *** [Wise_test_C] Fehler 1 

Answer 1

看在日誌配置調試的

****編譯/構建輸出。鏈接器找不到您指的庫，因此編譯停止在對象生成。

編輯在以下方面：

collect2: ld returned 1 exit status 

的連接失敗

我的猜測...在OpenCV沒有被鏈接
它看起來像你的程序也使用的OpenCV。您需要將您的可執行文件鏈接到openCV，以便解析庫libWISE_C.so中的符號。可以通過eclipse添加依賴項，也可以手動添加。請記住，您需要包含opencv標題，通過「-L」包含庫路徑並鏈接庫二進制文件。

在Eclipse中，右鍵單擊您的項目並轉到屬性。接下來，打開GCC C++鏈接器下的Libraries部分。在Libraries（-l）面板中添加一個具有opencv值的條目，然後單擊OK。

好運

Answer 2

看起來libWISE_C.so使用OpenCV或類似的庫。您必須在的的鏈接行中爲可執行文件提供其他庫，否則您將無法獲得成功的鏈接。

由於您自己構建了libWISE_C.so，因此您應該知道哪個未定義符號應來自哪個其他庫。

您也可以將此「其他庫」添加到libWISE_C.so本身的鏈接行，從而免費爲需要這樣做的客戶提供libWISE_C.so客戶端。