Found the following significant warnings:
  close3pair.c:30:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  closepair.c:51:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  connect.c:26:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  discarea.c:41:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:28:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:38:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:38:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:136:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:136:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:216:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:216:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:353:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distan3.c:353:38: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:27:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:37:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:37:32: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:136:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:136:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:219:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:219:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:342:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distances.c:342:36: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distmapbin.c:19:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  distmapbin.c:20:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  exactPdist.c:18:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  exactPdist.c:19:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  exactdist.c:41:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  fardist.c:21:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:42:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:122:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:122:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:122:37: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:123:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:123:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knndistance.c:123:40: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knngrid.c:26:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knngrid.c:51:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knngrid.c:51:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  knngrid.c:51:32: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  metricPdist.c:21:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  metricPdist.c:22:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nearestpix.c:22:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nearestpix.c:22:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:35:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:89:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:89:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:89:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:90:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:90:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:90:38: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nnMDdist.c:44:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:283:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:283:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:283:38: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:284:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:284:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nn3Ddist.c:284:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:42:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:101:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:101:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:101:34: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:102:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:102:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nndistance.c:102:37: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nngrid.c:26:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nngrid.c:49:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nngrid.c:49:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  nngrid.c:49:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  periodic.c:32:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  scan.c:16:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-clang/spatstat.geom.Rcheck/00install.out’ for details.