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This is now no longer a problem with the lib but my own problem that I would like to solve for future reference. When linking with the original dll it compiles and links just fine

Don't know how you compile, but typical extension for static lib compiled by msys2-mingw64 is `.a`, not `.lib`.
See <https://github.com/msink/kotlin-libui/blob/master/libui/src/nativeInterop/cinterop/libui.def#L5>

I'm using a shared library. I only followed the kn docs and the libs build instructions here: <https://github.com/signal11/hidapi>

The kln docs say that all libs, even static libs, on windows need to be .lib

You mean "To build HIDAPI using MinGW or Cygwin using Autotools, use the instructions
in the section titled "Building HIDAPI into a shared library on Unix
Platforms" above."?
Ok, cloned to f:\src, then in msys2-mingw64 console:
```
cd /f/src/hidapi
./bootstrap
./configure
make
make install
```
Got `libhidapi.a` and `libhidapi.dll.a` in `msys64\mingw64\lib` directory.

Yeah that's actually where I get stuck I guess. Not sure how to run those scripts on windows

But I'll take that question elsewhere since this is a kotlin native channel not a HIDAPI channel

Well - if as you said K/N documentation mentiod somewhere that libs on Windows should be `.lib` - it's K/N documentation bug.

Yeah that is also true. It says all libs, static or dynamic, should be of .lib

What does compiler error look like? Could you share it?

```
C:\Users\Alex\Desktop\hidstuff&gt;kotlinc-native -g src/*.kt -l out/cinterop/hidapi.klib -linker-options "libs\hidapi\hidapi.lib"
C:\Users\Alex\AppData\Local\Temp\konan_temp2160950149983819903\combined.o:(.text+0x29285): undefined reference to `hid_init'
C:\Users\Alex\AppData\Local\Temp\konan_temp2160950149983819903\combined.o:C:\BuildAgent\work\4d622a065c544371\runtime\src\main\kotlin\kotlin\text\regex\sets/DecomposedCharSet.kt:50: undefined reference to `hid_exit'
C:\Users\Alex\AppData\Local\Temp\konan_temp2160950149983819903\combined.o:C:\BuildAgent\work\4d622a065c544371\runtime\src\main\kotlin\kotlin\text\regex\sets/DecomposedCharSet.kt:50: undefined reference to `hid_enumerate'
C:\Users\Alex\AppData\Local\Temp\konan_temp2160950149983819903\combined.o:C:\BuildAgent\work\4d622a065c544371\runtime\src\main\kotlin\kotlin\text\regex\sets/DecomposedCharSet.kt:50: undefined reference to `hid_open_path'
C:\Users\Alex\AppData\Local\Temp\konan_temp2160950149983819903\combined.o:C:\BuildAgent\work\4d622a065c544371\runtime\src\main\kotlin\kotlin\text\regex\sets/DecomposedCharSet.kt:50: undefined reference to `hid_close'
clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
error: c:\Users\Alex\.konan\dependencies\msys2-mingw-w64-x86_64-gcc-7.3.0-clang-llvm-lld-6.0.1/bin/clang++ invocation reported errors
```

And the .lib is also in the same location as my .exe output

If you compiled by MSVC - of cource K/N don't see it.

Yeah that's what I was thinking actually. I'm still pretty new to the whole compilers and linker stuff. But I'll figure it out at some point.