cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_wait/siginfo_t.c -o sys_wait/siginfo_t -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sys_wait/siginfo_t.c:2:1: error: unknown type name ‘siginfo_t’
    2 | siginfo_t* foo;
      | ^~~~~~~~~