set(SFML_STATIC_LIBRARIES TRUE) doesn't work in cmake with SFML 2.5.1 on Debian 10 Buster

I installed SFML with the command “apt install libsfml-dev”.

I can link it in cmake discribed like in this post “https://en.sfml-dev.org/forums/index.php?topic=24070.0” and everything works pretty fine.

But if I add set(SFML_STATIC_LIBRARIES TRUE) to my cmake file to link sfml static I get the following error:

CMake Error at /usr/lib/x86_64-linux-gnu/cmake/SFML/SFMLConfig.cmake:139 (message):
  Requested SFML configuration (Static) was not found
Call Stack (most recent call first):
  CMakeLists.txt:30 (find_package)


CMake Error at CMakeLists.txt:30 (find_package):
  Found package configuration file:

    /usr/lib/x86_64-linux-gnu/cmake/SFML/SFMLConfig.cmake

  but it set SFML_FOUND to FALSE so package "SFML" is considered to be NOT
  FOUND.

I recognized that the SFMLConfig.cmake file wants to access a SFMLStaticTargets.cmake file in line 110, if I set(SFML_STATIC_LIBRARIES TRUE).

But my /usr/lib/x86_64-linux-gnu/cmake/SFML folder just contains the following files for Shared linking:

• SFMLConfig.cmake
• SFMLConfigDependencies.cmake
• SFMLConfigVersion.cmake
• SFMLSharedTargets.cmake
• SFMLSharedTargets-none.cmake

In sfml version I can download here “https://www.sfml-dev.org/download/sfml/2.5.1/” I can also just find these files in the lib/cmake/SFML folder, but a SFMLSharedTargets-release.cmake file instead of SFMLSharedTargets-none.cmake.

What can I do to static link sfml 2.5.1 in cmake?