Found the following significant warnings:
  ./win_linux_aux.h:40:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:46:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:47:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:64:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:66:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:67:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:68:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./RandomFieldsUtils.h:72:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./Utils.h:29:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./options.h:152:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./options.h:155:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./zzz_RandomFieldsUtils.h:96:3: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./zzz_RandomFieldsUtils.h:97:3: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./zzz_RandomFieldsUtils.h:132:3: 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/RandomFieldsUtils.Rcheck/00install.out' for details.