src/projects/mts/kmer_multiplicity_counter.cpp is missing #include <optional>.
Compiling with gcc/12.3.0 or /13.3.0, its lack results in errors like
/sw/bioinfo/spades/4.0.0/src/SPAdes-4.0.0/src/projects/mts/kmer_multiplicity_counter.cpp:104:18: error: 'optional' is not a member of 'std'
104 | std::optional<RtSeq> min_kmer;
| ^~~~~~~~
/sw/bioinfo/spades/4.0.0/src/SPAdes-4.0.0/src/projects/mts/kmer_multiplicity_counter.cpp:27:1: note: 'std::optional' is defined in header '<optional>'; did you forget to '#include <optional>'?
src/projects/mts/kmer_multiplicity_counter.cpp
is missing#include <optional>
.Compiling with gcc/12.3.0 or /13.3.0, its lack results in errors like