[gpderetta]

> so unless he is porting to a non POSIX platform

Very likely gmake works on non-posix platforms. Whether there is a requirement that the jobserver also works there I don't know.

It also needs to work on non-linux platforms. So a portable solution (or multiple non-portable ones) is needed.

[aumerle]

Yes, but this is two well known and understood functions we are talking about, wrapping them is really not that hard.