* installing *source* package ‘graphicalEvidence’ ...
** using staged installation
** libs
using C++ compiler: ‘Debian clang version 18.1.8 (11)’
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 GammaSampler.cpp -o GammaSampler.o
In file included from GammaSampler.cpp:1:
./graphical_evidence.h:7:10: fatal error: 'omp.h' file not found
    7 | #include <omp.h>
      |          ^~~~~~~
1 error generated.
make: *** [/home/hornik/tmp/R-d-clang-18/etc/Makeconf:202: GammaSampler.o] Error 1
ERROR: compilation failed for package ‘graphicalEvidence’
* removing ‘/srv/hornik/tmp/CRAN_pretest/graphicalEvidence.Rcheck/graphicalEvidence’