Re: [gentoo-devhelp] How do I get just the "-j" part from MAKEOPTS?

[Nathan Phillip Brink]

On Tue, Mar 27, 2012 at 05:43:43AM +0300, Nikos Chantziaras wrote:
> I have an ebuild that uses jam as its build system.  jam supports
> parallel builds with -jN.  However, other make options are not
> recognized.  So in the ebuild, I can't just pass ${MAKEOPTS}.
>
> Is there a way to filter out just the "-jN" part of MAKEOPTS and pass it on?

It looks like some eclasses just resort to sed for that:

ohnobinki@ohnopublishing ~/portage $ grep -Re 'MAKEOPTS.*-j' /usr/portage/eclass
/usr/portage/eclass/toolchain.eclass:           export MAKEOPTS="${MAKEOPTS} -j1"
/usr/portage/eclass/waf-utils.eclass:   local jobs=$(echo -j1 ${MAKEOPTS} | sed -r "s/.*(-j\s*|--jobs=)([0-9]+).*/--jobs=\2/" )
/usr/portage/eclass/perl-module.eclass:                 export HARNESS_OPTIONS=j$(echo -j1 ${MAKEOPTS} | sed -r "s/.*(-j\s*|--jobs=)([0-9]+).*/\2/" )

So if you did something dirty like that, it would be enough to make
people happy ;-).

-- 
binki

Look out for missing or extraneous apostrophes!