Re: complex Makefile for a bootstrapped self-hosting translator [GCC MELT] ?

[Michael Ludwig]

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
> http://www.gnu.org/software/make/manual/html_node/Suffix-Rules.html

  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:

    .c.o:
        $(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