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Re: complex Makefile for a bootstrapped self-hosting translator [GCC MEL

From: Michael Ludwig
Subject: Re: complex Makefile for a bootstrapped self-hosting translator [GCC MELT] ?
Date: Sat, 14 Jan 2012 23:09:39 +0100
User-agent: Mutt/1.5.20 (2009-12-10)

Michael Ludwig schrieb am 14.01.2012 um 22:44 (+0100):

>   Suffix rules are obsolete because pattern rules are more
>   general and clearer. They are supported in GNU make for
>   compatibility with old makefiles.
> 10.7 Old-Fashioned Suffix Rules

  A two-suffix rule whose target and source suffixes are ‘.o’
  and ‘.c’ is equivalent to the pattern rule ‘%.o : %.c’.
  […] For example, ‘.c’ and ‘.o’ are both on the default list of
  known suffixes. Therefore, if you define a rule whose target
  is ‘.c.o’, make takes it to be a double-suffix rule with source
  suffix ‘.c’ and target suffix ‘.o’. Here is the old-fashioned
  way to define the rule for compiling a C source file:

        $(CC) -c $(CFLAGS) $(CPPFLAGS) -o $@ $<

Hmm. This is what Microsoft NMake works like. Remove its .SUFFIXES
and it won't work. Guess these are two evolutionary stages of the
same concepts.

Michael Ludwig

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