Found the following significant warnings:
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/lz4/vtklz4/lib/lz4.c:608:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/lz4/vtklz4/lib/lz4.c:2377:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/adler32.c:63:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/adler32.c:134:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/adler32.c:143:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/adler32.c:172:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/adler32.c:180:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/compress.c:22:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/compress.c:68:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/compress.c:81:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:188:42: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:202:23: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:237:23: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:266:21: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:306:21: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:344:21: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:361:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:372:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:428:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/crc32.c:436:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:201:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:228:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:240:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:353:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:376:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:445:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:467:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:505:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:517:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:528:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:542:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:568:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:617:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:652:15: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:716:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:730:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:763:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1076:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1102:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1164:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1194:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1236:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1482:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1643:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1824:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:1926:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:2057:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/deflate.c:2130:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzclose.c:11:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:75:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:91:14: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:270:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:278:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:286:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:316:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:343:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:366:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:443:17: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:455:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:472:17: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:482:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:505:17: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:515:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:532:22: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:553:14: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzlib.c:579:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:21:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:56:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:91:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:175:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:229:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:259:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:294:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:375:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:411:18: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:447:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:476:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:483:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:543:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:607:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzread.c:627:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:17:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:73:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:145:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:178:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:246:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:274:18: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:304:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:352:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:553:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:585:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/gzwrite.c:627:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:105:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:119:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:144:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:157:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:195:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:239:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:247:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:278:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:396:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:622:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1277:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1291:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1314:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1349:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1377:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1400:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1451:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1461:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1508:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1526:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1541:14: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inflate.c:1554:23: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/infback.c:28:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/infback.c:82:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/infback.c:250:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/infback.c:631:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inftrees.c:32:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/inffast.c:50:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:232:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:379:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:407:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:451:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:486:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:572:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:615:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:703:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:748:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:799:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:834:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:863:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:886:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:896:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:911:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1014:19: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1064:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1124:11: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1158:16: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1173:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/trees.c:1190:12: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/uncompr.c:27:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/uncompr.c:86:13: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/zutil.c:27:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/zutil.c:32:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/zutil.c:133:22: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/zutil.c:305:22: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  /tmp/RtmpfRCo1l/R.INSTALL21054d55e8ac5c/riot/src/vtk-src/ThirdParty/zlib/vtkzlib/zutil.c:315:20: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/riot.Rcheck/00install.out' for details.