Found the following significant warnings:
  geom2.c:2030:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:21:19: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:25:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:27:68: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:27:89: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:27:119: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  logconweights.c:27:132: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:63:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:64:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:66:27: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:67:26: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:129:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:697:16: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  solvoptweights.c:700:17: 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/LogConcDEAD.Rcheck/00install.out' for details.