But when you build thru scripts the -j option is very often badly handeled ,
i forgot where, but passing to scripts like make-kpkg i think, -jX will break the whole process of the compilation if passed by hand
but if you put it in /etc/make-kpkg.conf (i think (i dont have all the names in mide)) it will be just fine i just love seeing the 4 procs at 90% working and gcc runing all over the place
That's why I usually go or all manually , or all automatically by editing conf files ...
I had a look and, in Debian, there was the bug #326183 requesting /etc/make.conf, but this is available only for Gentoo. But I think it's okay now, assuming that I don't compile big packages too often, and I can compile the kernel with DEBIAN_KERNEL_JOBS=2.