'ReferenceBlock' is a block property. 'Library' is not. You are probably looking for 'LinkStatus'.
model='f14';
open_system(model)
b=find_system(model,'FindAll','on','type','block','LinkStatus','resolved')
get_param(b,'ReferenceBlock')
ans =
'simulink/Sources/Band-Limited
White Noise'
>> lib=libinfo(model)
lib =
struct with fields:
Block: 'f14/Dryden Wind↵Gust Models/Band-Limited↵White Noise'
Library: 'simulink'
ReferenceBlock: 'simulink/Sources/Band-Limited↵White Noise'
LinkStatus: 'resolved'
If you are asking, in the returned info of libinfo(), where does that 'Library' info come from?
then, it is the file name (or library name) of the library block specified in 'ReferenceBlock'.
>> bdroot(lib.ReferenceBlock)
ans =
'simulink'
