Found the following significant warnings:
  areadiff.c:39:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  areadiff.c:110:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  areadiff.c:202:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  bdrymask.c:19:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  close3pair.c:30:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:51:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:55:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:129:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:199:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:222:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  closepair.c:329:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  connect.c:26:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  connect.c:34:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  connect.c:87:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  connect.c:101:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  discarea.c:28:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  discarea.c:41:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  discarea.c:137:8: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  discs.c:16:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  dist2dpath.c:15:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  dist2dpath.c:25:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:28:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:30:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:38:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:46:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:88:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:128:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:136:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:144:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:175:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:208:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:216:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:224:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:284:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:342:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:353:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:368:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:419:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distan3.c:474:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:27:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:29:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:37:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:46:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:88:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:128:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:136:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:145:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:178:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:211:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:219:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:227:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:281:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:333:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:342:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:350:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distances.c:392:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distmapbin.c:19:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distmapbin.c:20:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distmapbin.c:24:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  distmapbin.c:105:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactPdist.c:18:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactPdist.c:19:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactPdist.c:22:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactPdist.c:114:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactdist.c:41:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactdist.c:44:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactdist.c:154:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  exactdist.c:189:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  fardist.c:21:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  fardist.c:23:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  fardist.c:28:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:20:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:21:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:28:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:29:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:38:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:39:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:46:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hasclose.c:47:18: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hotrod.c:16:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  hotrod.c:56:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:42:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:61:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:78:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:95:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:104:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:122:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:123:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:161:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:176:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:191:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:209:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:225:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knndistance.c:241:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:26:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:32:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:51:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:77:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:94:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  knngrid.c:110:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  loccum.c:43:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  loccum.c:53:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  loccum.c:65:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  loccum.c:75:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:21:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:22:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:57:8: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:51:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:93:8: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  metricPdist.c:87:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  minnnd.c:22:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  minnnd.c:26:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  minnnd.c:34:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  minnnd.c:38:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nearestpix.c:22:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nearestpix.c:25:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:35:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:45:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:54:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:63:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:76:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:89:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:90:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:123:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:138:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:151:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:174:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:189:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:203:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:222:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:236:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:252:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:265:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:283:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:284:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:322:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:340:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:357:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:377:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:396:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nn3Ddist.c:414:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:44:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:46:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:152:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:252:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:344:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:439:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:635:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:862:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nnMDdist.c:1103:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:42:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:55:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:66:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:77:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:86:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:101:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:102:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:136:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:148:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:160:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:183:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:198:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nndistance.c:213:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:26:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:32:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:49:3: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:74:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:89:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  nngrid.c:103:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  periodic.c:32:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  poly2im.c:25:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  poly2im.c:103:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  quasirandom.c:15:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  raster.c:15:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  rasterfilter.c:19:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  scan.c:16:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  scan.c:19:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  scan.c:69:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  seg2pix.c:33:5: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  seg2pix.c:45:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  seg2pix.c:52:15: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  seg2pix.c:62:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  tabnum.c:15:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  tabnum.c:44:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  trigraf.c:50:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  trigraf.c:157:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:67:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:131:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:177:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:224:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:289:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:351:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:412:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
  xyseg.c:479:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-devel/spatstat.geom.Rcheck/00install.out’ for details.