* installing to library ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages’
* installing *source* package ‘sparsevb’ ...
** package ‘sparsevb’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: ‘Debian clang version 19.1.5 (1)’
using C++11
make[1]: Entering directory '/home/hornik/tmp/scratch/RtmpI24Fmq/R.INSTALL39ecbe6845e46c/sparsevb/src'
clang++-19 -std=gnu++11 -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/RcppArmadillo/include' -I'/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include' -I/usr/local/include -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -Wno-error=enum-constexpr-conversion -DR_NO_REMAP -c RcppExports.cpp -o RcppExports.o
In file included from RcppExports.cpp:5:
In file included from /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include/RcppEnsmallen.h:25:
/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include/ensmallen.hpp:32:4: error: "*** C++14 compiler required; enable C++14 mode in your compiler, or use an earlier version of ensmallen"
   32 |   #error "*** C++14 compiler required; enable C++14 mode in your compiler, or use an earlier version of ensmallen"
      |    ^
In file included from RcppExports.cpp:5:
In file included from /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include/RcppEnsmallen.h:25:
In file included from /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include/ensmallen.hpp:123:
/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/RcppEnsmallen/include/ensmallen_bits/nsga2/nsga2.hpp:187:5: warning: use of the 'deprecated' attribute is a C++14 extension [-Wc++14-attribute-extensions]
  187 |   [[deprecated("use ParetoFront() instead")]] const std::vector<arma::mat>& Front()
      |     ^
1 warning and 1 error generated.
make[1]: *** [/home/hornik/tmp/R.check/r-devel-clang/Work/build/etc/Makeconf:202: RcppExports.o] Error 1
make[1]: Leaving directory '/home/hornik/tmp/scratch/RtmpI24Fmq/R.INSTALL39ecbe6845e46c/sparsevb/src'
ERROR: compilation failed for package ‘sparsevb’
* removing ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/sparsevb’