posix_spawn(3POSIX) was introduced by POSIX.1d (IEEE Std 1003.1d-1999), and was later consolidated in POSIX.1-2001, requiring it in all POSIX-compliant systems. It's safe to assume it's always available, more than 20 years after its standardization. Link: <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/spawn.h.html>
6.6 KiB
6.6 KiB