Found the following significant warnings:
  ./graph.h:85:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./session.h:40:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./graph.h:85:6: warning: a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C2x, conflicting with a subsequent definition [-Wdeprecated-non-prototype]
  session.c:29:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/cgraph.Rcheck/00install.out' for details.
'LazyData' is specified without a 'data' directory
Found the following significant warnings:
  graph.h:85:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  session.h:40:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  session.c:29:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/cgraph.Rcheck/00install.out’ for details.
'LazyData' is specified without a 'data' directory
Found the following significant warnings:
  ./graph.h:85:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./session.h:40:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./graph.h:85:6: warning: a function declaration without a prototype is deprecated in all versions of C and is treated as a zero-parameter prototype in C2x, conflicting with a subsequent definition [-Wdeprecated-non-prototype]
  session.c:29:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-clang/cgraph.Rcheck/00install.out’ for details.
'LazyData' is specified without a 'data' directory
Found the following significant warnings:
  graph.h:85:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  session.h:40:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  session.c:29:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-devel/cgraph.Rcheck/00install.out’ for details.
'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
'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