RE: Expanded rules for scripts

[Bernard Dautrevaux]

> -----Original Message-----
> From: Akim Demaille [mailto:address@hidden
> Sent: Friday, December 15, 2000 3:45 PM
> To: Bernard Dautrevaux
> Cc: 'Pavel Roskin'; Alexandre Oliva; address@hidden
> Subject: Re: Expanded rules for scripts
> 
> 
> 
> | > > .sh: configure.in
> | > >         # do sth
> | > 
> | > Even GNU make would not let you do it.
> | 
> | This is indeed definitely wrong and I don't know of any 
> make where I've seen
> | this working but, to be honest, discovering once it was not 
> working I
> | stopped trying :-)
> 
> I must be missing something: why is it that clear it's wrong?

Mainly because ALL make refuse it, and that about all make documentation say
something like (cited from GNU make doc):

        Suffix rules cannot have any dependencies of their own.  If they
        have any, they are treated as normal files with funny names, not as
        suffix rules.

To achieve what ".sh: configure.in" seems to want to do you must use pattern
rules, like "%: %.sh configure.in", but this is non-portable so Autoconf
can't use it.

The main reason why ".sh: configure.in" is clearly wrong is that otherwise I
would have NO way to create an EXPLICIT rule to build some "hidden" file
named for example ".make.depend" if it happens make knows the ".make" and
".depend" suffixes ;-(

I know this is not so common, but it happens (BTW the .make.depend was
causing me problems for some time before I realize I had to put an explicit
dependant if I don't want to have make interpret it as a suffix rule in an
environment where make had, I don't know why, a .make suffix defined...)

> 
> | > > .sh: configure.in
> | > >         # do sth
> | > > autoconf.sh: some-other-dependency
> | > 
> | > This was used in Autoconf.
> | 
> | Are you sure? the ".sh: configure.in" dependency bothers me...
> 
> Nope, I meant
> 
> > .sh:
> >         # do sth
> > autoconf.sh: some-other-dependency
> 
> sorry for the confusion.  That's to what Pavel answered actually.
> 

Yep, I was thinking so :)

Regards,

        Bernard

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Bernard Dautrevaux
Microprocess Ingenierie
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