Trouble Linking Eclipse, MinGW++ and Halcon: Need Help!

[Tanja]

Hi,

I use Eclipse, MinGW++ and the library Halcon and can't get it right. There must be something wrong with the linker options as I get the error message: "undefined reference to ... ".

My settings under -> Properites -> C/C++ Build -> Settings-> MinGw++ Linker -> Libraries
are:

Libraries (-l):
halcon
halconcpp

Library search path (-L):
..\..\lib\x86sse2-win32
..\..\bin\x86sse2-win32

Is there something else I have to consider? Or something wrong with my settings?

Would be great if someone knows a solution. Thanks!
Tanja

 

[Mark44]

What is the rest of the linker error message? Is it to a function in your code or to a library function that your code is using?

 

[Tanja]

The entire message:**** Build of configuration Debug for project HalconTest ****

**** Internal Builder is used for build ****
g++ -IC:\Program Files\MVTec\HALCON-9.0\include -O0 -g3 -Wall -c -fmessage-length=0 -oRectangleIntoArray.o ..\RectangleIntoArray.cpp
g++ -s -LC:\Program Files\MVTec\HALCON-9.0\lib\x86sse2-win32 -oHalconTest.exe RectangleIntoArray.o -lhalcon -lhalconcpp
RectangleIntoArray.o: In function `main':
C:/Program Files/Eclipse/HalconTest/Debug/../RectangleIntoArray.cpp:25: undefined reference to `_imp___ZN6Halcon6HImageC1EPKc'
RectangleIntoArray.o: In function `ZSt17__verify_groupingPKcjRKSs':
C:/MinGW/bin/../lib/gcc/mingw32/3.4.5/../../../../include/c++/3.4.5/bits/locale_facets.tcc:2498: undefined reference to `_imp___ZTVN6Halcon6HImageE'
C:/MinGW/bin/../lib/gcc/mingw32/3.4.5/../../../../include/c++/3.4.5/bits/locale_facets.tcc:2499: undefined reference to `_imp___ZN6Halcon7HObjectD2Ev'
collect2: ld returned 1 exit status
Build error occurred, build is stopped
Time consumed: 1171 ms.

 

[Mark44]

Those seem to be functions in some Halcon lib, and not to a function that you wrote. The only thing I can think of to check is that the names you are using are exactly correct; e.g., that they don't being with two underscores instead of the single underscore you are using. If that's not the problem, then for some reason the correct lib isn't being found.

 

[LudusRex]

Hello Tanja,

It sounds like there may be an issue with your linker settings. Have you double-checked that the paths to your libraries and search paths are correct? Also, make sure that the libraries you are trying to link are compatible with MinGW++ and that they are included in your project.

If you have already checked these things and are still having trouble, it may be helpful to provide more specific information about the error message you are receiving and any other steps you have taken to troubleshoot the issue. Additionally, reaching out to the support team for MinGW++ and Halcon may also provide some helpful insights and solutions.

Best of luck with your project!