cc -pthread   -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations spawn/posix_spawnattr_setschedpolicy.c -o spawn/posix_spawnattr_setschedpolicy -D_POSIX_C_SOURCE=202405L -lm -lpthread  -lgdbm_compat -lintl -lnetwork -lbsd -latomic
spawn/posix_spawnattr_setschedpolicy.c:6:40: error: 'posix_spawnattr_setschedpolicy' undeclared here (not in a function); did you mean 'posix_spawnattr_setsigdefault'?
    6 | int (*foo)(posix_spawnattr_t *, int) = posix_spawnattr_setschedpolicy;
      |                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                        posix_spawnattr_setsigdefault