CMake Deprecation Warning: cmake_minimum_required

[galmyk]

Recently, when building pioasm and/or elf2uf2, CMake warns about cmake_minimum_required:

[ 96%] Performing configure step for 'PioasmBuild'
loading initial cache file /home/gmt/Projects/pico/build/pico-sdk/src/rp2_common/pico_cyw43_driver/pioasm/tmp/PioasmBuild-cache-Release.cmake
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 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.

#1477 reported the problem, but submitted patch is not correct.

[galmyk]

#1546

[peterharperuk]

I can't seem to reproduce this. Do you still have the problem if you delete your build folder and start from scratch?

[kilograham]

merged into develop