Ms Visual Studio 2012, "unresolved external symbol"

Question

I am trying to compile a C++ application through Microsoft Visual Studio 2012. I have linked the Boost, Jni, Acml libraries to the application.

When I click on rebuild, the compilation does not finish. This is the first error I get:

Error 28 error LNK2019: unresolved external symbol _sgesdd referenced in function "void __cdecl testLapackDGESDD_EASY(void)" (?testLapackDGESDD_EASY@@YAXXZ) C:\Users\DavideChicco\Documents\Visual Studio 2012\Projects\Solution\mainConsole.obj

Do you have any idea of what this is related to?

Thanks

See [this question](http://stackoverflow.com/q/12573816/1782465); you're most likely not linking LAPACK. — Angew is no longer proud of SO, Oct 18 '13 at 15:24

lolando · Answer 1 · 2013-10-19T00:21:05.890

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Your compilation seems to have finished, but the error happens during linking: the definition of the function _sgesdd called in testLapackDGESDD_EASY is not found. So
- either this function is defined in an external dll, and you need to add the lib in your solution,
- or this function is supposed to be defined in your project, and you need to implement its definition.

edited Oct 19 '13 at 00:21

answered Oct 18 '13 at 15:29

lolando

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That's his own function, it is "sgesdd" that the linker can't find. – Hans Passant Oct 18 '13 at 17:04

score 1 · Answer 2 · answered Oct 19 '13 at 00:42

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aha, The compiler cant't find the function "_sgesdd", I recommend you that add the lib which is supplied by the author of DLL.

answered Oct 19 '13 at 00:42

CodeJuan

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Ms Visual Studio 2012, "unresolved external symbol"

2 Answers2