cc -pthread   -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dirent/DT_SEM.c -o dirent/DT_SEM -D_POSIX_C_SOURCE=202405L  -lm -lpthread   -liconv
dirent/DT_SEM.c:3:2: error: "DT_SEM is not defined"
    3 | #error "DT_SEM is not defined"
      |  ^
1 error generated.