Re: posix_spawn

[Roland McGrath]

> Just out of curiosity, is posix_spawn a standard interface? And
> is it reasonable for programs to expect to have it available
> on a system that say, doesn't use glibc?

It's specified by some newfangled draft standard, as a new POSIX option.
It is not a GNU invention.  I don't know of any other systems that support
it yet, but I expect that they will by the time that standard is finished
and published.  It is certainly a new thing that programs should not expect
is necessarily available.  On any system where a configure check finds it,
it's there. :-) A conformant system's <unistd.h> will define _POSIX_SPAWN
if the interface is supported.