On Wed, Jun 12, 2019 at 7:25 PM David A. Wheeler wrote:
>
> I would strongly prefer "!" just binding to the next target & documenting
> that.
> The first time someone sees they may wonder how far it binds,
> but it's pretty obvious that there are multiple possibilities,
> so they can look it up o
On Wed, 2019-06-12 at 12:25 -0400, David A. Wheeler wrote:
> In addition, there's no obvious way to generalize that to
> prerequisites in general.
> Being able to remove prerequisites seems like something that
> should be rarely used, but very useful when it is needed.
> In particular, that'd simpl
On Wed, 12 Jun 2019 11:59:50 -0400, Paul Smith wrote:
> There's already too much whitespace-awareness in make as is IMO :).
:-).
> That's why I suggested embedding the "!" in the target name but if
> people don't like that, then we should just document that the "!" binds
> to the next target and
On Wed, 2019-06-12 at 10:15 -0400, David A. Wheeler wrote:
> > What about modifying the target name itself, like:
> >
> >tricky_target: .!ONESHELL .PHONY ...
>
> I think modifying the target name itself is MUCH worse.
>
> I don't the problem is serious, but I *do* see your point.
>
> I thin
On Wed, 12 Jun 2019 14:40:40 +0300, Michael Livshin wrote:
> Or!
> How about a general syntax for canceling prerequisites (not just for
> special targets)? Say, "!:" (inspired by "&:")?
>
> Then you'd just say ".ONESHELL!: my-tricky-target". More verbose than
> "my-tricky-target: ! .ONESHELL" o
On Tue, 2019-06-11 at 16:25 -0400, David A. Wheeler wrote:
> Add a syntax to *disable* a special target for
> a particular rule. I propose that it be
> a whitespace-surrounded "!" in the prerequisites
> followed by the special target being disabled. E.g.:
>
>
> .ONESHELL:
>
> tricky_target:
Or!
How about a general syntax for canceling prerequisites (not just for
special targets)? Say, "!:" (inspired by "&:")?
Then you'd just say ".ONESHELL!: my-tricky-target". More verbose than
"my-tricky-target: ! .ONESHELL" or whatever,
but seems more robust to me (and more general, although I co
David A. Wheeler (11 June 2019 22:25) wrote:
>> I know of no other use for "!" in prerequisites.
On June 12, 2019 4:42:15 AM EDT, Edward Welbourne
wrote:
>Well, it could be a file-name ;^>
Fair enough, although I expect that to be extremely rare.
That can be easily escaped as "./!".
--- Davi
David A. Wheeler (11 June 2019 22:25) wrote:
> I know of no other use for "!" in prerequisites.
Well, it could be a file-name ;^>
For example, compare /usr/bin/[
A Unix could implement the shell's ! as an actual command.
The make-file to build it would have ! as a target to build.
The check rule t
Idea: Standard way to negate special targets
Problem:
Sometimes you want to set a default value using a
special target, but in a few cases you want to *disable*
the special target.
For example, you might want to use:
.ONESHELL:
for *almost* all the rules, except for a few rules
where you want
10 matches
Mail list logo
