* installing *source* package ‘hellorust’ ...
** this is package ‘hellorust’ version ‘1.2.3’
** using staged installation
cargo 1.91.1 (ea2d97820 2025-10-10) (built from a source tarball)
rustc 1.91.1 (ed61e7d7e 2025-11-07) (built from a source tarball)
** libs
using C compiler: ‘Debian clang version 21.1.8 (1+b1)’
clang-21 -std=gnu23 -I"/home/hornik/tmp/R-d-clang-21/include" -DNDEBUG -DSTRICT_R_HEADERS -DR_NO_REMAP  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -pthread -fpic  -g -O3 -Wall -pedantic -c wrapper.c -o wrapper.o
wrapper.c:7:1: error: unknown type name 'SEXP'
    7 | SEXP hello_wrapper(void){
      | ^
wrapper.c:9:3: error: use of undeclared identifier 'SEXP'
    9 |   SEXP hello_world_string = PROTECT(Rf_mkCharCE(hello_rust, CE_UTF8));
      |   ^~~~
wrapper.c:11:3: error: use of undeclared identifier 'UNPROTECT'
   11 |   UNPROTECT(1);
      |   ^~~~~~~~~
wrapper.c:12:10: error: use of undeclared identifier 'Rf_ScalarString'
   12 |   return Rf_ScalarString(hello_world_string);
      |          ^~~~~~~~~~~~~~~
wrapper.c:12:26: error: use of undeclared identifier 'hello_world_string'
   12 |   return Rf_ScalarString(hello_world_string);
      |                          ^~~~~~~~~~~~~~~~~~
wrapper.c:15:1: error: unknown type name 'SEXP'
   15 | SEXP random_wrapper(void){
      | ^
wrapper.c:16:10: error: use of undeclared identifier 'Rf_ScalarInteger'
   16 |   return Rf_ScalarInteger(random_number());
      |          ^~~~~~~~~~~~~~~~
wrapper.c:19:1: error: unknown type name 'SEXP'
   19 | SEXP threads_wapper(void){
      | ^
wrapper.c:21:10: error: use of undeclared identifier 'R_NilValue'
   21 |   return R_NilValue;
      |          ^~~~~~~~~~
wrapper.c:25:14: error: unknown type name 'R_CallMethodDef'
   25 | static const R_CallMethodDef CallEntries[] = {
      |              ^
wrapper.c:26:22: error: use of undeclared identifier 'DL_FUNC'
   26 |   {"hello_wrapper", (DL_FUNC) &hello_wrapper, 0},
      |                      ^~~~~~~
wrapper.c:27:23: error: use of undeclared identifier 'DL_FUNC'
   27 |   {"random_wrapper", (DL_FUNC) &random_wrapper, 0},
      |                       ^~~~~~~
wrapper.c:28:23: error: use of undeclared identifier 'DL_FUNC'
   28 |   {"threads_wapper", (DL_FUNC) &threads_wapper, 0},
      |                       ^~~~~~~
wrapper.c:29:4: error: use of undeclared identifier 'NULL'
   29 |   {NULL, NULL, 0}
      |    ^~~~
wrapper.c:29:10: error: use of undeclared identifier 'NULL'
   29 |   {NULL, NULL, 0}
      |          ^~~~
wrapper.c:32:23: error: unknown type name 'DllInfo'
   32 | void R_init_hellorust(DllInfo *dll) {
      |                       ^
wrapper.c:33:3: error: use of undeclared identifier 'R_registerRoutines'
   33 |   R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
      |   ^~~~~~~~~~~~~~~~~~
wrapper.c:33:27: error: use of undeclared identifier 'NULL'
   33 |   R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
      |                           ^~~~
wrapper.c:33:46: error: use of undeclared identifier 'NULL'
   33 |   R_registerRoutines(dll, NULL, CallEntries, NULL, NULL);
      |                                              ^~~~
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make: *** [/home/hornik/tmp/R-d-clang-21/etc/Makeconf:194: wrapper.o] Error 1
ERROR: compilation failed for package ‘hellorust’
* removing ‘/srv/hornik/tmp/CRAN_pretest/hellorust.Rcheck/hellorust’