>>> "SK" == Stepan Kasal <[EMAIL PROTECTED]> writes:
SK> SUFFIXES = .moc.cpp
SK> .h.moc.cpp:
SK> $(MOC) -o $@ $<
SK> On Mon, Sep 05, 2005 at 03:02:28PM -0600, Tom Tromey wrote:
>> I have never tried it but it is somewhat hard to imagine some versions
>> of make accepting a suffix with two '.'s in it.
SK> It's not hard to imagine. The .SUFFIXES special target, which Automake
SK> generates, is standardized by POSIX. I can imagine a sane implmentation
SK> of .SUFFIXES counts with this possibility.
I've even used rules such as
.SUFFIXES: .tex -etu.tex
.tex-etu.tex:
sed ... < $< > $@
where the suffix does not start with `.' like in POSIX.
It works fine with GNU make and BSD make. (Haven't tried more.)
I guess implementations don't consider `.' to have any special meaning,
they just take whatever is listed in .SUFFIXES to match suffixes.
Automake rules are a bit different. If you write
.idlC.cpp:
whatever
and no pair of suffixes can match this target, automake will
automatically register .idlC and .cpp as ".SUFFIXES", assuming
this is a inference rule for *.idlC -> *.cpp
However if you say
SUFFIXES = .idl C.cpp
.idlC.cpp:
whatever
then this will be correctly understood as a rule for *.idl -> *C.cpp
So we could say that `.' is not magic as long as there are some
SUFFIXES matches.
--
Alexandre Duret-Lutz
