* installing *source* package 'cheddar' ... ** using staged installation ** libs using C++ compiler: 'g++.exe (GCC) 13.2.0' g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c anneal.cpp -o anneal.o g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c cheddar.cpp -o cheddar.o g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c shortest_paths.cpp -o shortest_paths.o g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c trophic_chains.cpp -o trophic_chains.o trophic_chains.cpp: In instantiation of 'void TrophicChains::visit(Visitor&) const [with Visitor = CollectChainLengthsVisitor]': trophic_chains.cpp:349:17: required from here trophic_chains.cpp:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector >::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 92 | for(int n = 0; n < adjacency_.size(); ++n) | ~~^~~~~~~~~~~~~~~~~~~ trophic_chains.cpp:128:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 128 | for(int j=0; j::visit(Visitor&) const [with Visitor = PrintChainsVisitor]': trophic_chains.cpp:412:17: required from here trophic_chains.cpp:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector >::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 92 | for(int n = 0; n < adjacency_.size(); ++n) | ~~^~~~~~~~~~~~~~~~~~~ trophic_chains.cpp:128:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 128 | for(int j=0; j::visit(Visitor&) const [with Visitor = CollectChainsVisitor]': trophic_chains.cpp:480:17: required from here trophic_chains.cpp:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector >::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 92 | for(int n = 0; n < adjacency_.size(); ++n) | ~~^~~~~~~~~~~~~~~~~~~ trophic_chains.cpp:128:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 128 | for(int j=0; j::visit(Visitor&) const [with Visitor = ChainStatsVisitor]': trophic_chains.cpp:552:17: required from here trophic_chains.cpp:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector >::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 92 | for(int n = 0; n < adjacency_.size(); ++n) | ~~^~~~~~~~~~~~~~~~~~~ trophic_chains.cpp:128:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector::size_type' {aka 'long long unsigned int'} [-Wsign-compare] 128 | for(int j=0; j