On Sat, Jan 09, 2010 at 11:49:22PM +0000, Tim Bunce wrote:
> On Sat, Jan 09, 2010 at 11:16:18PM +0200, Peter Eisentraut wrote:
> > On fre, 2010-01-08 at 12:46 +0000, Tim Bunce wrote:
> > > *** 45,50 ****
> > > --- 45,55 ----
> > >
> > > include $(top_srcdir)/src/Makefile.shlib
> > >
> > > + plperl.o: perlchunks.h
> > > +
> > > + perlchunks.h: plc_*.pl
> > > + $(PERL) text2macro.pl --strip='^(\#.*|\s*)$$' plc_*.pl >
> > > perlchunks.htmp
> > > + mv perlchunks.htmp perlchunks.h
> > >
> > > all: all-lib
> >
> > What's the reason for the temp file here?
>
> Defensive. If the text2macro.pl program fails/dies then you'd be left
> with a broken output file with a newer timestamp, so the next make
> wouldn't rerun text2macro.pl.
An alternative would be for text2macro.pl to write to a temp file and
rename at the end.
Tim.
