can not use static library (.lib) which is created by .net?

Question

I created static library using .net with publishAOT

dotnet publish -r -win-x64 -release /p:NativeLib=Static

then I create dynamic library in c++ (.dll) and want to use this library

but it seems can not .

#pragma comment(lib,"my_lib.lib");

extern __declspec(dllimport) const char* __stdcall get(const char*, const char*);

but I can not use get and there will be error message unresovled link.

Answer 1

Hi, @mc

Use extern "C".
__declspec(dllimport) is not needed when loading static lib.

Currently , there are still a series of problems when using static libraries, so it is better to use dynamic libraries.
https://github.com/dotnet/runtime/issues/96298

Improve static library publishing

Also check the doc:
https://github.com/dotnet/samples/blob/main/core/nativeaot/NativeLibrary/README.md

Warning

It's preferred to build shared libraries than static libraries:

All code in the loadable module must be compiled with C/C++ compiler version and options that are compatible with native AOT static libraries.

It's also not possible to mix multiple native AOT compiled static libraries within the same loadable module.

These problems don't exist when you build a shared library.

Best regards,

Minxin Yu

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