* installing *source* package 'eummd' ... ** using staged installation ** libs using C++ compiler: 'g++.exe (GCC) 12.2.0' g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I"d:/rtools43/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c RcppExports.cpp -o RcppExports.o g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I"d:/rtools43/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c eummd.cpp -o eummd.o g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I"d:/rtools43/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c interfaceRcpp.cpp -o interfaceRcpp.o In file included from interfaceRcpp.cpp:2: medianHeuristic.h:15:37: error: 'size_t' has not been declared 15 | size_t dZ, | ^~~~~~ medianHeuristic.h:16:37: error: 'size_t' has not been declared 16 | size_t nZ, | ^~~~~~ make: *** [D:/RCompile/recent/R/etc/x64/Makeconf:272: interfaceRcpp.o] Error 1 ERROR: compilation failed for package 'eummd' * removing 'd:/RCompile/CRANincoming/R-devel/lib/eummd'