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:261:9: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:272:8: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:402:15: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:467:8: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:606:19: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:613:18: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:648:37: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  solvoptweights.c:659:19: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
  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]
  useful.c:59:8: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
See ‘/data/gannet/ripley/R/packages/tests-clang/LogConcDEAD.Rcheck/00install.out’ for details.