cc -O2 -pthread -I/usr/local/include  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations spawn/POSIX_SPAWN_SETSID.c -o spawn/POSIX_SPAWN_SETSID -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt -L/usr/local/lib  -lintl -lcrypt
spawn/POSIX_SPAWN_SETSID.c:3:17: error: 'POSIX_SPAWN_SETSID' undeclared here (not in a function); did you mean 'POSIX_SPAWN_SETSIGDEF'?
    3 | int const foo = POSIX_SPAWN_SETSID;
      |                 ^~~~~~~~~~~~~~~~~~
      |                 POSIX_SPAWN_SETSIGDEF