Error when linking to libpopsift.a (__cxa_init_primary_exception. Undefined reference to std::__exception_ptr::exception_ptr::exception_ptr(void).) about popsift HOT 7 CLOSED

Could you please post your configuration (os, system, cuda version etc) and the cmake or the command line u used to build the program

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The reason for this could be that Popsift and the program that uses it are compiled with different compilers, or different versions of the same compiler. Another reason could be that the linker is in C mode (e.g. linking with gcc or ld) but it needs to be in C++ mode.

Some people on StackOverflow have fixed it by linking -lstdc++, but that does not look like a long-term solution:
https://stackoverflow.com/questions/20708165/g-undefined-reference-to-symbol-cxa-free-exceptioncxxabi-1-3-when-buildi

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Hi @simogasp
My host is a x86_64 ubuntu comprising of nvidia toolkit 10 and my target is a jetson tx2. I built the libraries on my target, transfered them to host, and linked them. I just checked the compiler versions, both are different, Could this be a cause of error? Also @griwodz I tried linking with -lstdc++ but still the same issue. I have a follow up question: if i want to eventually use the programe on the target, should I first cross-compile popsift and then link it or just use the one from the local host? If so please help me with that.
Kind Regards
Kunal Khosla

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Thanks for your reply guys, it seems due to different versions of the compiler, I got the issue. I ultimately compiled on the same version and that fixed my problem.

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I was too slow to answer, but yes: what you tried to do will often fail with C++ programs, but with CUDA, it is much more important to have absolutely identical versions.

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Although unrelated @griwodz , is it possible to somehow see popsift keypoints using opencv functions like drawKeypoints.

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@kunalkhosla93 Sorry, but I don't know that. If it can show SIFT keypoints from the OpenCV version of SIFT, it should be quite easy to copy PopSift descriptors into the OpenCV descriptor data structure and use that function.

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