* installing to library ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages’
* installing *source* package ‘natcpp’ ...
** this is package ‘natcpp’ version ‘0.3.0’
** package ‘natcpp’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: ‘Debian clang version 22.1.8 (1+b1)’
make[1]: Entering directory '/home/hornik/tmp/scratch/Rtmphp6YBt/R.INSTALL131cd41d31b27/natcpp/src'
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c RcppExports.cpp -o RcppExports.o
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c cable.cpp -o cable.o
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c coordinates.cpp -o coordinates.o
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c matrix.cpp -o matrix.o
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c seglist.cpp -o seglist.o
clang++-22 -std=gnu++20 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG  -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppThread/include' -I/usr/local/include -D_FORTIFY_SOURCE=3  -fopenmp -fpic  -g -O3 -Wall -pedantic   -c weighted_jaccard.cpp -o weighted_jaccard.o
clang++-22 -std=gnu++20 -shared -L/home/hornik/tmp/R.check/r-devel-clang/Work/build/lib -Wl,-O1 -o natcpp.so RcppExports.o cable.o coordinates.o matrix.o seglist.o weighted_jaccard.o -fopenmp -L/home/hornik/tmp/R.check/r-devel-clang/Work/build/lib -lR
make[1]: Leaving directory '/home/hornik/tmp/scratch/Rtmphp6YBt/R.INSTALL131cd41d31b27/natcpp/src'
make[1]: Entering directory '/home/hornik/tmp/scratch/Rtmphp6YBt/R.INSTALL131cd41d31b27/natcpp/src'
make[1]: Leaving directory '/home/hornik/tmp/scratch/Rtmphp6YBt/R.INSTALL131cd41d31b27/natcpp/src'
installing to /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-natcpp/00new/natcpp/libs
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘natcpp’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-natcpp/00new/natcpp/libs/natcpp.so':
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-natcpp/00new/natcpp/libs/natcpp.so: undefined symbol: __atomic_compare_exchange
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/natcpp’