unresolved references with em64t (ok with ia32)

[lel4866]

When I compile the example code (calling zdotc) under Visual Studio 2005 using ia32 (specifiying mkl_c.lib as an Additional Dependency for the Linker), everything works fine and executes properly.

However, taking the same source code and specifying mkl_em64t_lib as an Additional Dependency for the Linker, I get:

error LNK2019: unresolved external symbol _zdotc referened in function _main

Same if I replace the call to zdotc with cbals_ddot (with appropriate source code changes).

Any suggestions?

Thanks.

Larry Lewis

[TimP]

You need the em64t MKL libraries equivalent to those you used for the 32-bit build. If you are building both 32- and 64-bit on the same platform, I guess you could have difficulty if you depend on a default PATH setting which you may have selected when installing MKL.

[lel4866]

I thought I did switch to the em64t libs: mkl_em64t.lib. It still gives unresolved external reference.

[lel4866]

Also, I did a dumpbin of the two libs: 1ia32mkl_c.lib and em64tmkl_em64t.lib. ia32mkl_c.lib has virtually all of its defined symbols starting with a preceeding _, while em64tmkl_em64t.lib has none of it's symbols define with a preceeding underscore.

My guess is that this is the problem, but I don't know what caused it or how to get around it.

[Andrey_G_Intel2]

Could you tell us that version of MKL are you using?

[lel4866]

I've tried both 9.1.027 and 10.0.006, but here's the solution (at least for 10.0.006):

1. You have to install the Visual Studio 2005 64-bit compilers (I hadn't)
2. You have to use the Configuration Manager in VS 2005 to set the Platform to x64