leim Makefile not -j safe

leim Makefile not -j safe

[Marco Franzen]

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When building GNU Emacs 21.2 including leim-21.2 using make -j 2 (on a
two-way SPARC machine with Solaris 2.6, GNU Make 3.78.1 and GNU CC 3.1), the
bootstrap stalled with

.../leim/quail/4Corner.el locked by marcof@ukfd-e... (pid 11633): (s, q, p,
?)? 

Actually that message appeared long before it stalled; it stalled only when
make had run out of targets (for the other job slot).

See the attached typescript for details. In there I hit return a couple of
times when it stopped and then said p (proceed).



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Re: leim Makefile not -j safe

[Eli Zaretskii]

On Sun, 2 Jun 2002, Marco Franzen wrote:

> When building GNU Emacs 21.2 including leim-21.2 using make -j 2 (on a
> two-way SPARC machine with Solaris 2.6, GNU Make 3.78.1 and GNU CC 3.1), the
> bootstrap stalled with
> 
> .../leim/quail/4Corner.el locked by marcof@ukfd-e... (pid 11633): (s, q, p,
> ?)? 

Please upgrade to a newer version of Make (3.79 or later) or don't use -j.  
leim/Makefile disables parallel execution for some of its targets, but 
the feature required to do that was not part of GNU Make before v3.79.

RE: leim Makefile not -j safe

[Marco Franzen]

> > When building GNU Emacs 21.2 including leim-21.2
> > using make -j 2 (on a two-way SPARC machine with
> > Solaris 2.6, GNU Make 3.78.1 and GNU CC 3.1),
> > the bootstrap stalled with
> > 
> > .../leim/quail/4Corner.el locked by marcof@ukfd-e...
> > (pid 11633): (s, q, p, ?)? 
> 
> Please upgrade to a newer version of Make (3.79 or
> later) or don't use -j.
> leim/Makefile disables parallel execution
> for some of its targets, but the feature required
> to do that was not part of GNU Make before v3.79.

I'll upgrade then, thanks.

Anyway, from the comment in Makefile.in, I would
have thought you tried to work around Make versions
that don't honour '.NOTPARALLEL' pseudo targets:

	# The "if [ -f $@ ]; then true; " part
        prevents parallel Make's
	# which don't honor .NOTPARALLEL, such as
        SGI's Make, from running
	# this rule many times, one each for every
        file it creates.

It might be interesting to know that those attempts
still leave you with the locking problem.
Maybe those attempts are no use because it fails 
anyway...


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