From:	Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: example of autodependency in make.exe
Date:	Thu, 15 Jun 2000 00:15:07 +0100
Organization:	Customer of Planet Online
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References:	<01BFD5E6 DOT 4D7E9940 AT LEON DOT caresystems DOT com DOT au> <200006132348 DOT TAA26312 AT envy DOT delorie DOT com>
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

DJ Delorie <dj AT delorie DOT com> wrote:

> I do this, but it only really works if the sources and objects are all
> in the same directory as the Makefile:
> 
> %.o : %.c (or whatever rule)
> 	gcc -MMD ...

It's worth noting that `CPPFLAGS += -MMD' will achieve the same result
for all the built-in rules to compile C/C++.

> DEPS=$(wildcard *.d)
> ifneq ($(DEPS),)
> include $(DEPS)
> endif

Hmm, is there any reason not to do the following?:

-include $(wildcard *.d)


The original poster could also search the mail archives for a
previous thread where I posted a similar scheme:

Subject: OT: `make clean' wants to rebuild `.d' files

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