* installing *source* package ‘ccaPP’ ...
** using staged installation
** libs
using C compiler: ‘Debian clang version 18.1.8 (9)’
using C++ compiler: ‘Debian clang version 18.1.8 (9)’
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG  -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/Rcpp/include' -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/RcppArmadillo/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3 -DSTRICT_R_HEADERS=1  -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c cca.cpp -o cca.o
clang-18  -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG  -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/Rcpp/include' -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/RcppArmadillo/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3 -DSTRICT_R_HEADERS=1  -fpic  -g -O3 -Wall -pedantic -c ccaPP_init.c -o ccaPP_init.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG  -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/Rcpp/include' -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/RcppArmadillo/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3 -DSTRICT_R_HEADERS=1  -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c cor.cpp -o cor.o
cor.cpp:255:3: error: use of undeclared identifier 'error'
  255 |                 error("method not available");  // should never happen
      |                 ^
1 error generated.
make: *** [/home/hornik/tmp/R-d-clang-18/etc/Makeconf:202: cor.o] Error 1
ERROR: compilation failed for package ‘ccaPP’
* removing ‘/srv/hornik/tmp/CRAN_pretest/ccaPP.Rcheck/ccaPP’