Found the following significant warnings:
  inner.cpp:100:15: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
  inner.cpp:310:15: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
  inner.cpp:436:15: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
  ./npde.h:29:15: warning: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
  init.c:58:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  init.c:145:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:49:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:299:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:301:30: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:303:22: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:304:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
  /data/gannet/ripley/R/test-clang/RxODE/include/RxODE.h:312:18: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
See ‘/data/gannet/ripley/R/packages/tests-clang/nlmixr.Rcheck/00install.out’ for details.