Bug 592255

Summary: Linker shows an error when trying to link cv::imwrite
Product: [Fedora] Fedora Reporter: Anonymous account <M8R-7fin56>
Component: opencvAssignee: Rakesh Pandit <rpandit>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 13CC: karlthered, kklic, kwizart, nomis80, rpandit
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2011-01-07 08:38:29 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
The cpp code to reproduce the error. none

Description Anonymous account 2010-05-14 11:24:50 UTC 
Created attachment 414014 [details]
The cpp code to reproduce the error.

Description of problem:
If you try to link a C Plus Plus file, which uses the openCv function cv:: imwrite, it gets an undefined reference error.

undefined reference to `cv::imwrite(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::Mat const&, std::vector<int, std::allocator<int> > const&)'

The strange thing is, that it links all other tested opencv functions like cv::imread successfully.



Version-Release number of selected component (if applicable):
2.0.0-7.fc13

How reproducible:
Try to compile and link the code in the attachment.

Steps to Reproduce:
1. Download the attached code
2. Try to compile and link it:
g++ -I/usr/include/opencv  -lcxcore -lcv -lhighgui -lcvaux -lml opencv_bug.cpp
3.
  
Actual results:
[]$ g++ -I/usr/include/opencv  -lcxcore -lcv -lhighgui -lcvaux -lml opencv_bug.cpp 
/tmp/ccBD9wCz.o: In function `main':
opencv_bug.cpp:(.text+0xfa): undefined reference to `cv::imwrite(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::Mat const&, std::vector<int, std::allocator<int> > const&)'
collect2: ld returned 1 exit status

Expected results:
Compile and link sucessfully.

Additional info:
Comment 1 Nicolas Chauvet (kwizart) 2011-01-07 08:38:29 UTC 
Sorry for the late answear:

Your code worked with :
g++ $(pkg-config --cflags opencv)  $(pkg-config --libs opencv) opencv_bug.cpp
Only tested on OpenCV 2.2 just updated in Rawhide. So At least Closing to Rawhide.