Require Update to CMakeLists.txt for source build due to new CMake 4.0(+) requirements #204
Description
e.g., if installing on older macOS (Catalina) via Homebrew, the last 15 lines of the log are:
-Wno-dev
-DBUILD_TESTING=OFF
-DCMAKE_OSX_SYSROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
CMake Error at CMakeLists.txt:29 (cmake_minimum_required):
Compatibility with CMake < 3.5 has been removed from CMake.
Update the VERSION argument <min> value. Or, use the <min>...<max> syntax
to tell CMake that the project requires at least <min> but has been updated
to work with policies introduced by <max> or earlier.
Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
-- Configuring incomplete, errors occurred!
Error: You are using macOS 10.15.
We (and Apple) do not provide support for this old version.
This is a relatively recurrent problem in Homebrew builds since Homebrew updated CMake to version 4 and deprecated all other versions. The fix in all cases is to update the broken CMake policy lines and/or the min/max version settings as per the reported errors.
Solution: dev team to confirm required min and max values and update CMakeLists.txt