In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/bits/requires_hosted.h:31,
                 from /usr/include/c++/15.2.0/string:40,
                 from rtree.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/exception:37,
                 from ../../../include/mdds/./multi_type_vector/soa/../../global.hpp:7,
                 from ../../../include/mdds/./multi_type_vector/soa/main.hpp:9,
                 from ../../../include/mdds/multi_type_vector.hpp:7,
                 from ../../../include/mdds/multi_type_matrix.hpp:13,
                 from multi_type_matrix.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/exception:37,
                 from ../../../include/mdds/global.hpp:7,
                 from ../../../include/mdds/quad_node.hpp:7,
                 from ../../../include/mdds/point_quad_tree.hpp:7,
                 from point_quad_tree.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/bits/requires_hosted.h:31,
                 from /usr/include/c++/15.2.0/string:40,
                 from flat_segment_tree.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/bits/requires_hosted.h:31,
                 from /usr/include/c++/15.2.0/string:40,
                 from multi_type_vector.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/bits/requires_hosted.h:31,
                 from /usr/include/c++/15.2.0/string:40,
                 from segment_tree.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/functional:50,
                 from ../../../include/mdds/./cref_wrapper.hpp:9,
                 from ../../../include/mdds/sorted_string_map.hpp:9,
                 from sorted_string_map.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
In file included from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/os_defines.h:39,
                 from /usr/include/c++/15.2.0/x86_64-pc-linux-gnu/bits/c++config.h:727,
                 from /usr/include/c++/15.2.0/exception:37,
                 from ../../../include/mdds/global.hpp:7,
                 from trie_map.cpp:5:
/usr/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
  435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
      |    ^~~~~~~
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