In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/bits/requires_hosted.h:31, from /usr/include/c++/13.3.0/string:38, from multi_type_vector.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/bits/requires_hosted.h:31, from /usr/include/c++/13.3.0/string:38, from flat_segment_tree.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/exception:35, from ../../../include/mdds/global.hpp:31, from ../../../include/mdds/quad_node.hpp:31, from ../../../include/mdds/point_quad_tree.hpp:31, from point_quad_tree.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/exception:35, from ../../../include/mdds/./multi_type_vector/soa/../../global.hpp:31, from ../../../include/mdds/./multi_type_vector/soa/main.hpp:32, from ../../../include/mdds/multi_type_vector.hpp:31, from ../../../include/mdds/multi_type_matrix.hpp:37, from multi_type_matrix.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/bits/requires_hosted.h:31, from /usr/include/c++/13.3.0/string:38, from rtree.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/bits/requires_hosted.h:31, from /usr/include/c++/13.3.0/string:38, from segment_tree.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/functional:48, from ../../../include/mdds/./cref_wrapper.hpp:31, from ../../../include/mdds/sorted_string_map.hpp:31, from sorted_string_map.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ In file included from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/os_defines.h:39, from /usr/include/c++/13.3.0/x86_64-pc-linux-gnu/bits/c++config.h:679, from /usr/include/c++/13.3.0/exception:35, from ../../../include/mdds/global.hpp:31, from trie_map.cpp:18: /usr/include/features.h:412:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] 412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O) | ^~~~~~~ WARNING: could not find ''