Found the following significant warnings:
  LLNfilt.c:107:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:38: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:47: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:57: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:108:63: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:109:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:109:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:110:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:110:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:110:41: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:111:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:111:29: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:111:39: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:111:48: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  LLNfilt.c:111:56: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  MTAPSRC.c:55:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  MTAPSRC.c:940:6: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  MTAPSRC.c:1532:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  MTAPSRC.c:1855:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  jpiki.c:441:13: 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/RSEIS.Rcheck/00install.out' for details.