CMake Deprecation Warning: Compatibility with CMake < 2.8.12 will be removed from a future version of CMake

[milahu]

https://github.com/pdf2htmlEX/pdf2htmlEX/blob/56db76d1ab140e0ac94c83e5dbe0e01fbe5a71ec/pdf2htmlEX/CMakeLists.txt#L7

CMake Deprecation Warning at CMakeLists.txt:7 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.

[jclds139]

An update on this: CMake 4.0 is released now, which cannot build this project at all due to removed compatibility for versions less than 3.5 since this project is calling cmake_minimum_required with a version in the 2.x range.