Found the following significant warnings:
  init.c:5:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  swfInit.c:9:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./compile.h:21:10: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./compile.h:191:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./compile.h:197:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./compile.h:250:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  compile.c:141:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  compile.c:944:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../blocks/output.h:40:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:991:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:992:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:993:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:2912:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:2920:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:2925:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf4.c:3044:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:1130:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:1131:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:1132:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:1133:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3539:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3547:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3552:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3574:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3617:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  lex.swf5.c:3669:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./output.h:40:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./block.h:83:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./block.h:86:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./block.h:92:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../blocklist.h:37:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./../displaylist.h:67:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./../displaylist.h:69:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../actioncompiler/compile.h:21:10: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../actioncompiler/compile.h:191:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../actioncompiler/compile.h:197:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ../actioncompiler/compile.h:250:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  action.c:268:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  block.c:171:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  block.c:178:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./text.h:68:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./font.h:109:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./font.h:113:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./font.h:143:42: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./filter.h:19:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  button.c:435:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./shape.h:90:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./fileattrs.h:38:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  fileattrs.c:80:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  filter.c:666:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  font.c:275:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  font.c:458:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  font.c:908:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  fromswf.c:73:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  fromswf.c:111:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gradient.c:52:15: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  morph.c:177:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  output.c:46:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  scenedata.c:124:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./scriptlimits.h:37:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  scriptlimits.c:62:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  shape.c:178:17: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  shape.c:222:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  sprite.c:111:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  symbolclass.c:104:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  text.c:166:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  text.c:221:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  textfield.c:196:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  videostream.c:634:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocklist.h:37:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/block.h:83:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/block.h:86:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/block.h:92:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/output.h:40:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/../displaylist.h:67:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/../displaylist.h:69:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  blocklist.c:66:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/shape.h:90:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/filter.h:19:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  displaylist.c:89:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  displaylist.c:108:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./font_util.h:38:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  font_util.c:55:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  gc.c:86:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ming.c:43:14: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ming.c:56:13: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ming.c:88:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./displaylist.h:67:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./displaylist.h:69:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/text.h:68:31: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/font.h:109:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/font.h:113:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/font.h:143:42: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/fileattrs.h:38:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/scriptlimits.h:37:35: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/symbolclass.h:22:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  ./blocks/scenedata.h:21:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  movie.c:232:12: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  movieclip.c:74:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/R2SWF.Rcheck/00install.out' for details.