for non-standard things in the check directory

'LazyData' is specified without a 'data' directory
Found the following files/directories:
  'example.pdf'
'LazyData' is specified without a 'data' directory
Found the following files/directories:
  ‘example.pdf’
'LazyData' is specified without a 'data' directory
File ‘Rdtq/libs/Rdtq.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
Found the following files/directories:
  ‘example.pdf’
'LazyData' is specified without a 'data' directory
File ‘Rdtq/libs/Rdtq.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
Found the following files/directories:
  ‘example.pdf’
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Found the following files/directories:
  ‘example.pdf’
'LazyData' is specified without a 'data' directory
Found the following files/directories:
  ‘example.pdf’
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory