remove pfunit and ENABLE_TESTS option, tests will always be enabled

[edwardhartnett]

I build like this:

cmake -DCMAKE_PREFIX_PATH=/home/ed/NCEPLIBS/NCEPLIBS-landsfcutil ..
make VERBOSE=1

and it works. But when I try to run tests:

(base) ed@mikado:~/NCEPLIBS-landsfcutil/b$ make tests
make: *** No rule to make target 'tests'.  Stop.
(base) ed@mikado:~/NCEPLIBS-landsfcutil/b$ make test
make: *** No rule to make target 'test'.  Stop.

[aerorahul]

One needs to pass the -DENABLE_TESTS=ON flag to CMake.
Testing requires pFUNIT, so you will need to have that available on your system.

[edwardhartnett]

Yes, I finally figured that out. ;-)

However, we have decided to do away with pfunit for exactly this sort of reason, so then we can also eliminate the ENABLE_TESTS option, and always enable tests, just like most other projects do.