Speed up build phase with "make -j"

[js]

On 10/29/07, Anders F Björklund <afb at macports.org> wrote:
> >> Note that some ports will fail to build, when using "make -j 2"
> >
> > What causes the build erorr? is it for bad Makefile or problem of "-j"
> > option itself?
>
> Bad makefiles, usually missing dependencies.


So, in a way, using -j encourage us to find wrong makefiles:)