[gentoo-user] Different build options for specific packages

[Dale]

Howdy,

I read where someone did this but I can't find it now.  I looked at the
wiki and did some startpage searches, no luck.  Here goes:

I generally let emerge build packages in parallel. This works because a
lot of packages are small and don't take long to build or much room
either.  However, there are a few exceptions.  For me, Seamonkey,
Firefox and Libreoffice cause issues.  I would like those to build one
at a time instead of at the same time.  I've had times where all three
have updates but having two of them at the same time occurs pretty
regular.  I thought I recalled this needing to be in package.env but my
test didn't work.  I put this in package.env: 

www-client/seamonkey  MAKEOPTS="-j1"
www-client/firefox  MAKEOPTS="-j1"
 
Since I'm here, you can guess that emerge didn't like that.  So, either
I'm putting that in the wrong place, the wrong way or something.  Oh, I
looked at the wiki and I didn't see things like this.  I just went with
what little I recalled which seems to be not correct. 

Can someone point me in the right direction here?  Examples would be
nice because I may want to disable portage on tmpfs as well, for
Libreoffice at least. 

Thanks

Dale

:-)  :-)