Date: Tue, 19 Jun 2001 22:26:20 +0300
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
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To: Eric Rudd <rudd AT cyberoptics DOT com>
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CC: djgpp AT delorie DOT com
In-reply-to: <3B2F9AF2.2F342792@cyberoptics.com> (message from Eric Rudd on
	Tue, 19 Jun 2001 13:33:22 -0500)
Subject: Re: make and autodependency thing
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> From: Eric Rudd <rudd AT cyberoptics DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: Tue, 19 Jun 2001 13:33:22 -0500
> 
> In the Borland make, the .autodepend statement causes the make program to
> examine #include statements to figure out dependencies in C programs
> automatically, even if there are recursive #includes.  It also digs into .LIB
> library file headers for information about the dates of library members (as
> opposed to the date of the .LIB file itself).

GNU Make does the same if you designate targets as being library
members.

> I found the
> .autodepend statement a lot more convenient than using -M during compilation
> and having a bunch of extra files to include, and wish GNU make had something
> comparable.

Such a feature would require Make to understand every programming
language where such include directives are available.  That's why GNU
Make uses GCC to do that: that way, it doesn't need to know anything
about the source language.