fork vs posix_spawn

[Barath Aron]

Hello,

I successfully cross-compiled the findutils 4.6.0 to Threos ( see: 
https://threos.io ). Sadly, I had to apply some patches, namely: 
additional guard around an unused stack variable (see the submitted 
patch), and two fork-related patches (replacing "fork()" with "-1", 
because Threos does not support fork). Since the forks are gone, xargs 
is now pointless, and find -exec is also out of order.
My question is: It is possible to implement the process creation 
(fork+exec) with posix_spawn? If yes or you are opened for this, I can 
help with a prototype implementation. The GNU make successfully adopted 
posix_spawn.

In some cases, find and xargs can be more efficient, see:
https://salsa.debian.org/ruby-team/ruby-posix-spawn

Aron