alex lupu wrote:
HI Bruce,
On Wed, Nov 5, 2014 at 8:41 PM, Bruce Dubbs <[email protected]> wrote:
What you don't seem to understand is that bash substitutes the output of
$(getconf _NPROCESSORS_ONLN) before autogen.sh ever sees it. autogen.sh
never sees $(getconf _NPROCESSORS_ONLN), it only sees (in my case) the
digit 8.
Yes, I do.
I think I have some sort of clarity now but maybe I'm biased because, as I
said in the OP, I never had to face this problem before.
I never used what to me looked like a very scary line (maybe I don't
like dollar signs in my eyes ?:) so to summarize,
if I were the President I'd issue an Executive Order like this:
1. Remove the $ line from the book (too hard to understand, too confusing,
unnecessary in most situations).
Is the totally equivalent `getconf _NPROCESSORS_ONLN` also scary?
2. For people who want to avoid heating problems in using too many cores
during this unusually long build, etc., add
2.1. Find out the exact number of cores you have available,
getconf _NPROCESSORS_ONLN
2.2. Add a line to the command "./autogen.sh --prefix=$LO_PREFIX ..."
--with-parallelism=<number of cores you would like to use>
While that's right, there are some things that users can figure out for
themselves. Perhaps a short sentence to reduce the number if desired
would be OK.
PS As an aside, nobody has yet opined on the first change I suggested in
my OP
You mean $LO_PREFIX? Oops, there's another of those scary dollar
signs... :)
-- Bruce
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