DECIMAL_COMPACT_SHORT
DECIMAL_COMPACT_LONG
POSIX_SC_OPEN_MAXIPPROTO_ICMP
IPPROTO_ICMPV6
TCP_FUNCTION_BLK (solo FreeBSD)
TCP_FUNCTION_ALIAS (solo FreeBSD)
TCP_REUSPORT_LB_NUMA (solo FreeBSD)
TCP_REUSPORT_LB_NUMA_NODOM (solo FreeBSD)
TCP_REUSPORT_LB_NUMA_CURDOM (solo FreeBSD)
TCP_BBR_ALGORITHM (solo FreeBSD)
AF_PACKET (solo Linux)
IP_BINDANY (solo FreeBSD/NetBSD/OpenBSD)
SO_BUSY_POLL (solo Linux)
UDP_SEGMENT (solo Linux)
SHUT_RD
SHUT_WR
SHUT_RDWR
IMAGETYPE_HEIF
IMAGETYPE_SVG
cuando libxml esté cargado.