On Thu, 19 Apr 2001, Ruslan Ermilov wrote:
> On Thu, Apr 19, 2001 at 11:12:24PM +1000, Bruce Evans wrote:
> [...]
> > > IIRC, it is assumed that "make -jX install (where X > 1)" _doesn't_ work.
> > > I've heard why, but I've forgotten :-)
> >
> > Right. One case where it doesn't work is installing /bin/sh with the
> > default install flags. /bin/sh gets clobbered, so anything that attempts
> > to use it concurrently doesn't work. In particular, a concurrent
> > sub-make may fail. This problem is avoided for some very important
> > install targets like ld.so by adding -C to INSTALLFLAGS to give an
> > atomic installation. Atomic installation (but not -C) should be the
> > default.
> >
> This one seems like an easy task, and this is suspicious... How about
> the attached patch? I have tested it lightly, and haven't found any
> problems. Will the `make -j32 installworld' of -CURRENT be enough
> test to commit this and remove -B from Makefile.inc1?
Testing several times with different -j values is a good idea, since the
order of commands can vary with the -j value and the timing.
> Is the atomic install the only known issue for not functional
> `make -jN install'?
It's the only one that I can think of now. There are probably more in the
perl install :-).
Bruce
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