Increase cmake minimum version to cmake >= 3.18
Rationale
Since 3.18 Cmake supports REQUIRED parameter in find_program(), which would simplify cmake files in many places all over codebase.
instead of:
find_program(variable_name NAMES program_name)
if( NOT variable_name)
message(FATAL_ERROR "program not found")
endif()may be just:
find_program(variable_name NAMES program_name REQUIRED)
Increase cmake minimum version to cmake >= 3.18
Rationale
Since 3.18 Cmake supports
REQUIREDparameter infind_program(), which would simplify cmake files in many places all over codebase.instead of:
may be just: