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. Tim. p.s. In the makefile for perl we use a little utility called mv_if_diff instead of a plain mv so that any downstream dependencies only get rebuilt if the contents have changed. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers