### Author:  [@kerim](https://discourse.cmake.org/u/kerim)
#### Post date: [August 20, 2022, 11:52am UTC](https://discourse.cmake.org/t/link-external-static-lib-along-with-dynamic-libs-to-the-executable/6309/1 "2022-08-20T11:52:28Z")
Hi,
Can’t understand why linker gives me error:
```auto
licensecc_static.lib(licensecc.obj) : error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MT_StaticRelease' d
oesn't match value 'MD_DynamicRelease' in Main.obj
```
I externally compiler `licensecc_static.lib` as static library and I’m trying to link it to executable.
Also I link few shared libs to the same executable.
I tried to:
```cmake
set_property(TARGET licensecc::licensecc_static PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$:Debug>")
```
but this didn’t help.
All of them compiled in Release mode with MSVC 2022
---
### Author:  [@jtxa](https://discourse.cmake.org/u/jtxa)
#### Post date: [August 20, 2022, 2:17pm UTC](https://discourse.cmake.org/t/link-external-static-lib-along-with-dynamic-libs-to-the-executable/6309/2 "2022-08-20T14:17:21Z")
The runtime of all objects (including those from libs) must match.
Currently you’re compiling your library against the static and `Main.obj` against the DLL runtime. Both in release, not debug mode.
The manual of [MSVC\_RUNTIME\_LIBRARY](https://cmake.org/cmake/help/latest/prop_tgt/MSVC_RUNTIME_LIBRARY.html) shows all 4 possible values.
---
### Author:  [@kerim](https://discourse.cmake.org/u/kerim)
#### Post date: [August 20, 2022, 6:49pm UTC](https://discourse.cmake.org/t/link-external-static-lib-along-with-dynamic-libs-to-the-executable/6309/3 "2022-08-20T18:49:49Z")
Thank you for the explanation.
It seems I don’t understand something.
For now I just compiled `licensecc` library without [-DSTATIC\_RUNTIME=1](http://open-license-manager.github.io/licensecc/development/Build-the-library-windows.html#supported-cmake-definitions-options) even though it is recommended to set it to `1`. It works if it is `0` (no mentionned errors).
But what `STATIC_RUNTIME` really changes?
As I see if I pass `STATIC_RUNTIME=1` then `/MT` flag is added ([link for the code](https://github.com/open-license-manager/licensecc/blob/eb882ae75b92827a245542e7ddfc48f9476d67a7/CMakeLists.txt#L88)).
Why adding `/MT` flag leads to mentionned error: after all the library is added using [ADD\_LIBRARY(licensecc\_static STATIC ${sources})](https://github.com/open-license-manager/licensecc/blob/eb882ae75b92827a245542e7ddfc48f9476d67a7/src/library/CMakeLists.txt#L6-L15) - it is still static.
---
### Author:  [@McMartin](https://discourse.cmake.org/u/McMartin)
#### Post date: [August 21, 2022, 10:21am UTC](https://discourse.cmake.org/t/link-external-static-lib-along-with-dynamic-libs-to-the-executable/6309/4 "2022-08-21T10:21:49Z")
The type of the MSVC runtime is unrelated to the type of library you want to build. It’s totally possible to use the static runtime with a DLL, or the dynamic runtime with a static library.
---
### Author:  [@kerim](https://discourse.cmake.org/u/kerim)
#### Post date: [August 21, 2022, 10:44am UTC](https://discourse.cmake.org/t/link-external-static-lib-along-with-dynamic-libs-to-the-executable/6309/5 "2022-08-21T10:44:51Z")
Thank you! I will try to google that.
I think I have lack of knowledge there.