Found the following significant warnings:
  ./rJava.h:123:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./rJava.h:167:28: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  Rglue.c:39:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  Rglue.c:1214:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  Rglue.c:1225:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  init.c:751:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  init.c:762:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  loader.c:34:37: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  otables.c:11:28: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  rJava.c:14:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  rJava.c:142:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  registration.c:6:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  tools.c:109:28: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  tools.c:131:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  tools.c:141:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-clang/rJava.Rcheck/00install.out’ for details.
* used C compiler: ‘clang version 15.0.6’