Found the following significant warnings:
  2k.c:25:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:25:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:27:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:27:43: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:169:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:230:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:299:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  2k.c:314:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:341:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:343:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:345:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:385:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:385:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:387:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:408:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:408:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:410:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gcontrol_c.c:757:53: warning: if statement has empty body [-Wempty-body]
  gif_c.c:39:28: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:39:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:40:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:40:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:41:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:47:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:111:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:137:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:163:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:187:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:249:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gif_c.c:279:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  hap_c.c:1348:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./gdef.h:31:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:436:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:520:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:852:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1076:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1220:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1289:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1424:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1560:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1584:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1626:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  makeped_c.c:1649:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-clang/gap.Rcheck/00install.out’ for details.