Unable to avoid NCZARR-related warning (low priority -- annoyance only)

[gsjaardema]

I get the following warning during a configuration of 4.9.2 and also Wards' 4.9.3.wif:

CMake Warning at CMakeLists.txt:1656 (MESSAGE):
  ENABLE_NCZARR==NO => ENABLE_NCZARR_FILTERS==NO AND
  ENABLE_NCZARR_FILTER_TESTING==NO

I have tried using the folliowing and still get the warning:

	 -D${PREFIX}ENABLE_NCZARR_FILTERS:BOOL=OFF \
	 -D${PREFIX}ENABLE_NCZARR_FILTER_TESTING:BOOL=OFF \
	 -D${PREFIX}ENABLE_NCZARR:BOOL=OFF \

Note that ${PREFIX} is empty for 4.9.2 and NETCDF_ for main and 4.9.3.wif.
I think the warning should check that the variables that it is warning about are not set and if they are, don't emit the warning.

[DennisHeimbigner]

The problem is that I was looking for certain cases of the form

if( not x and y)
message(warning "not x => not y)
endif

However in a couple of cases (including the one you encountered), I was only testing

if( not x)
message(warning "not x => not y)
endif

I will post a fix shortly.