Error of the type unresolved external symbol

Hello everyone,

so i am trying to compile a MEX program on MATLAB, which contains C++ files as well.

I now experience this error:

uhd_functions.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl uhd::msg::register_handler(void (__cdecl*const &)(enum uhd::msg::type_t,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &))" (__imp_?register_handler@msg@uhd@@YAXAEBQ6AXW4type_t@12@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z@Z) referenced in function "int __cdecl initUHD(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?initUHD@@YAHV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)

I am unable to make the head or tail of this eeror, let alone resolve it.

Can someone help me out?

Thanks a lot,

Vinayak Anant Karandikar

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/411113-mex-file-error-with-uhd#comment_687266 you probably need a -L

[VINAYAK KARANDIKAR]

I got results finally. To close my question: I got the MEX file up. The problem was with the uhd.lib file, which was not getting correctly linked for some reason. I deleted the UHD folder, renstalled the UHD and started all over again. This time the linking (MEX command) worked.

[Aliza Abdul Gani Shaikh]

Hello Vinayak,

I could generate the mex file using uhd 3.10.

I have come across the same error while using UHD 3.14 version as there is a lack of msg.hpp in 3.14.

which version of uhd lib have you used?

Warm Regards,

Aliza

[VINAYAK KARANDIKAR]

Hello Aliza,

I had used UHD 3.10. It was suggested by Mr Lulf that i use a older version of UHD because the file msg.hpp in the older version supported the C++ language used in the codes i was trying to compile. I do not know what level of C++ your codes uses, it depends on that. Contact Mr Lulf for better replies: "https://www.nav.ei.tum.de/index.php?id=105"

Regards,

Vinayak Anant Karandikar