Found the following significant warnings:
  Rmpi.h:34:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:35:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:36:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:37:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:38:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:39:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:40:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:41:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:47:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:49:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:51:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.h:89:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:38:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:60:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:110:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:121:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:142:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:153:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:157:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:161:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:165:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:208:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:221:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:235:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  Rmpi.c:1068:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  conversion.c:31:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-devel/Rmpi.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc (GCC) 12.2.1 20221121 (Red Hat 12.2.1-4)’