[Reg 5.14.0 -> 5.14.1] WebAssembly: 'perl' is required in path when building a project

The implementation for QTBUG-77745 introduces a version comparison which uses perl. If perl is not in the path, the user gets this output:

18:30:44: Starting: "C:\Qt\online-installer\5.14.1\wasm_32\bin\qmake.exe" C:\Users\alportal\dev\qmlprojector\qmlprojector.pro -spec wasm-emscripten "CONFIG+=debug" "CONFIG+=qml_debug"
'perl' is not recognized as an internal or external command,
operable program or batch file.
Info: creating stash file C:\Users\alportal\dev\build-qmlprojector-Qt_5_14_1_WebAssembly-Debug\.qmake.stash
'perl' is not recognized as an internal or external command,
operable program or batch file.
Project WARNING: This Qt was built with Emscripten version 1.38.27. You have . The difference may cause issues.

The build continues afterwards. However, the user remains a bit worried.

Could for example the existence of perl be checked before triggering the version check?