On Sun, 30 Jul 2006, Paul D. Smith wrote:
%% Lee Killough <[EMAIL PROTECTED]> writes:
lk> I can find no documentation on the + option, other than the
lk> documentation on the message, which says to use +.
If you look in the index you'll find pointers to both the section
"Instead of Executing the Commands" and "How the `MAKE' Variable Works",
each of which contains a description.
Ah, there's a brief mention there. I looked in the index for + and could
not find anything except:
* +, and define: Sequences.
But other command prefixes were listed:
* - (in commands): Errors.
* @ (in commands): Echoing.
I did not find any reference to + on the main pages on "recursion", or
parallel make, so after not seeing it in the index, I assumed there wasn't
any documentation on +.
As above, "+" _is_ explained pretty straightforwardly in the GNU make
manual.
Try looking here for more info on the jobserver:
http://make.paulandlesley.org/jobserver.html
Thanks.
lk> Perhaps a larger filehandle number, less likely to occur in common
lk> shell redirection idioms, should be used for the jobserver.
Well, pipe(2) doesn't allow you to choose your own file descriptors: it
just uses the lowest available descriptors. I could use dup2(2) to
force different ones after the pipe has been created, but there's no
portable way in POSIX (that I know of) to find the maximum valid file
descriptor. I guess we could just use OPEN_MAX, if we can figure it
out.
Understood.
Thanks,
Lee
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