It's been two years since @cffk mentioned in #1885 that CMake should show warnings to 3rd party apps that attempt to use find_package(PROJ4). While it should have happened for PROJ 9.0, it is now due for PROJ 9.1.
As for retiring the PROJ4 CMake name, this can wait until after the PROJ 9.x series (approx 2027).
It's been two years since @cffk mentioned in #1885 that CMake should show warnings to 3rd party apps that attempt to use
find_package(PROJ4). While it should have happened for PROJ 9.0, it is now due for PROJ 9.1.As for retiring the PROJ4 CMake name, this can wait until after the PROJ 9.x series (approx 2027).