* installing to library ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages’ * installing *source* package ‘websocket’ ... ** package ‘websocket’ successfully unpacked and MD5 sums checked ** using staged installation Found pkg-config cflags and libs! Using PKG_CFLAGS= Using PKG_LIBS=-lssl -lcrypto ** libs using C++ compiler: ‘g++-13 (Debian 13.2.0-23) 13.2.0’ using C++11 make[1]: Entering directory '/home/hornik/tmp/scratch/Rtmp2BY3X7/R.INSTALL140a5610e722f8/websocket/src' g++-13 -std=gnu++11 -I"/home/hornik/tmp/R.check/r-devel-gcc/Work/build/include" -DNDEBUG -I./lib -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/cpp11/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/AsioHeaders/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/later/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O2 -Wall -pedantic -mtune=native -c cpp11.cpp -o cpp11.o g++-13 -std=gnu++11 -I"/home/hornik/tmp/R.check/r-devel-gcc/Work/build/include" -DNDEBUG -I./lib -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/cpp11/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/AsioHeaders/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/later/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O2 -Wall -pedantic -mtune=native -c debug.cpp -o debug.o g++-13 -std=gnu++11 -I"/home/hornik/tmp/R.check/r-devel-gcc/Work/build/include" -DNDEBUG -I./lib -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/cpp11/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/AsioHeaders/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/later/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O2 -Wall -pedantic -mtune=native -c websocket.cpp -o websocket.o g++-13 -std=gnu++11 -I"/home/hornik/tmp/R.check/r-devel-gcc/Work/build/include" -DNDEBUG -I./lib -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/cpp11/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/AsioHeaders/include' -I'/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/later/include' -I/usr/local/include -D_FORTIFY_SOURCE=3 -fpic -g -O2 -Wall -pedantic -mtune=native -c websocket_connection.cpp -o websocket_connection.o websocket_connection.cpp: In function ‘cpp11::raws to_raw(std::string)’: websocket_connection.cpp:37:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string::size_type’ {aka ‘long unsigned int’} [-Wsign-compare] 37 | for(int i=0; i