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Message-ID: <3C25C077.C6469A42@is.elta.co.il>
Date: Sun, 23 Dec 2001 13:31:03 +0200
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: djgpp AT delorie DOT com
Subject: Re: Should I use bash as default shell in makefiles?
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Reply-To: djgpp AT delorie DOT com

> From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
> Newsgroups: comp.os.msdos.djgpp
> Date: Thu, 20 Dec 2001 21:41:55 +0000
> 
> Even simpler then:
> 
> -include $(sources:.c=.d)
> 
> > The main reason I was thinking I'd have to use an alternative shell to
> > command.com, was because of this example from the make docs:
> > 
> > %.d: %.c
> >         $(SHELL) -ec '$(CC) -M $(CPPFLAGS) $< \
> >               | sed '\''s/\($*\)\.o[ :]*/\1.o $@ : /g'\'' > $@; \
> >               [ -s $@ ] || rm -f $@'
> 
> I've never understood why the docs say that.  Is there a good reason for
> all that effort to create the .d files?

The reason for the Sed command is explained in the Make manual, right
after the command itself.  It's a valid reason, IMHO.