Found the following significant warnings:
  libdieharder/dieharder/Dtest.h:29:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/dieharder_rng_types.h:62:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/dieharder_test_types.h:37:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:101:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:102:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:103:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:104:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:105:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:106:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:107:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:108:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:109:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:116:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:144:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder/libdieharder.h:150:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/bits.c:1427:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dab_dct.c:197:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dab_dct.c:311:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/diehard_craps.c:30:10: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder_rng_types.c:42:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/dieharder_test_types.c:30:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/random_seed.c:19:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/rgb_lagged_sums.c:92:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/rngav.c:141:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/rngs_gnu_r.c:58:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/sample.c:43:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/timing.c:16:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/timing.c:21:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/timing.c:26:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/timing.c:33:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/version.c:26:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  libdieharder/version.c:51:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:102:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:103:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:104:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:105:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:106:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:107:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:108:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./dieharder.h:114:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  add_ui_rngs.c:17:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  choose_rng.c:19:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  choose_rng.c:21:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  choose_rng.c:298:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  dieharder.c:19:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  dieharder.c:20:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  dieharder.c:21:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  help.c:38:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  help.c:45:10: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  help.c:207:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  init.c:12:32: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  init.c:13:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  list_rand.c:21:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  list_rngs.c:18:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  list_tests.c:17:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  list_tests.c:45:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  output.c:10:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  output.c:173:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  output.c:236:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  output_rnds.c:18:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  run_all_tests.c:21:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  run_test.c:11:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  startup.c:20:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  time_rng.c:20:14: 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/RDieHarder.Rcheck/00install.out' for details.