* installing *source* package ‘seqminer’ ...
** this is package ‘seqminer’ version ‘9.7’
** package ‘seqminer’ successfully unpacked and MD5 sums checked
** using staged installation
configure: CC = /usr/local/clang21/bin/clang -std=gnu23
configure: CFLAGS = -O3 -Wall -pedantic -Wp,-D_FORTIFY_SOURCE=3
configure: CXX = ERROR: no information for variable 'CXX11' ERROR: no information for variable 'CXX11STD'
configure: CXXFLAGS = ERROR: no information for variable 'CXX11FLAGS'
checking whether the C++ compiler works... no
configure: error: in `/data/gannet/ripley/R/packages/tests-clang/seqminer':
configure: error: C++ compiler cannot create executables
See `config.log' for more details
ERROR: configuration failed for package ‘seqminer’
* removing ‘/data/gannet/ripley/R/packages/tests-clang/seqminer.Rcheck/seqminer’