Authors guide to avoiding a 'FAIL' (current status).

[Sisyphus]

Hi,
Is it now the case that the *only* way for a module to generate a 'FAIL' 
report is for one or more tests to fail during the 'make test' stage ?

If a build procedure gets aborted during either the 'perl Makefile.PL' or 
'make' stage (for whatever reason) does that now result in an 'UNKNOWN' ? 
... or are there some 'ifs and buts' by which a 'FAIL' can still be reported 
for 'perl Makefile.PL' and/or 'make' failures ?

Is there a "ready reckoner" somewhere for module authors, where this is all 
spelled out ? ... something that will document, clearly and concisely, the 
conditions under which 'NA', 'UNKNOWN', 'PASS' and 'FAIL' reports are 
dispensed ?

Cheers,
Rob