libmfx.lib with STL on Windows

[Ashim_Prasad]

Hello,

I am not able to link my program which uses media sdk and STL together on windows. I am using visual studio 2015. I am able to link only if I specify /MT instead of /MD, however I need to specify /MD since /MT is not compatible "Consume windows run-time library" - that I need to enable.

A small sample code like below gives error "error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MT_StaticRelease' doesn't match value 'MD_DynamicRelease". Note that this error goes away if I remove either usage of STL (string) or mfx. Also this goes away if I use /MT switch - but I can't

#include <stdio.h>
#include <string>
#include <mfxvideo.h>

using std::string;

int main()
{
    string test("hello");
    printf("%s\n", test.c_str());

    mfxIMPL impl = MFX_IMPL_AUTO;
     mfxVersion ver = { { 0, 1 } };
    mfxSession session;
    mfxStatus status = MFXInit(impl, &ver, &session);

    return 0;
}

[Harshdeep_B_Intel]

Hi Ashim, 

MediaSDK DLL libraries are updated with every driver release. Let me check with our team on your use case usage and get back to you soon.  

Thanks, 

[Harshdeep_B_Intel · Accepted solution]

Hi Ashim, 

If you need to use /MD setting in you app build, you will need to rebuild dispatcher from source with /MD option and use it instead of dispatcher version provided in release package (which is built with /MT). Source code to dispatcher lib is available at MediaSDK installed directory (<\opensource\mfx_dispatch>\). Using the same setting in dispatcher and app will work. 

Thanks,

[Ashim_Prasad]

Thanks. Building the library from the opensource directory has solved the problem

[Harshdeep_B_Intel]

Glad, resolved the issue. Closing this thread.