On Sun, Jun 9, 2019 at 10:38 PM Paul Smith wrote:
> On Sun, 2019-06-09 at 18:24 -0400, David A. Wheeler wrote:
> > ...
> > In many cases I suspect this would eliminate calls for using md5
> > hashes and special state; I suspect many of those requests are really
> > trying to deal with problems of
On Mon, Jun 10, 2019 at 10:38 AM Paul Smith wrote:
>
> On Sun, 2019-06-09 at 18:46 -0400, David A. Wheeler wrote:
> > As syntactic sugar,
> > I'd like to see selected special targets allowed as dependencies.
> > When this happens, it's the same thing as if the target was listed
> > as a dependency
On Mon, 10 Jun 2019 11:56:04 +0900, Masahiro Yamada
wrote:
> It is a design.
Sure, but we can add to it.
> In summary, there is slight difference between
> a variable and a user-defined function.
> Omitting 'call' makes obscure the difference between them.
I don't think it obscures the differe
On Sun, 09 Jun 2019 22:11:32 -0400, Paul Smith wrote:
> I don't think this can work, as-is.
>
> It's a common paradigm in make (including POSIX make) where there is a
> rule that could cause a very expensive operation to be started, to
> instead make a cheap test and if it determines the expensiv
On Sun, 2019-06-09 at 18:24 -0400, David A. Wheeler wrote:
> Proposed solution:
> By default, make should check the timestamp of the non-.PHONY target(s)
> produced after
> executing a rule, and ensure that their timestamps are at least equal to the
> timestamps to the files that caused execution
On Sun, 2019-06-09 at 18:53 -0400, David A. Wheeler wrote:
> There's also no need for it. If "name" is followed by whitespace it *cannot*
> be a POSIX variable reference, because POSIX doesn't allow that.
>
> Solution:
> Just allow $(name ...), where 1+ whitespace follows name, to be considered
>
On Sun, 2019-06-09 at 19:21 -0400, David A. Wheeler wrote:
> If I understand correctly, that means that a single:
> .WONTCREATE:
> will be enough to detect a problem if *all* my rules
> are supposed to always create the non-PHONY targets.
Yes, that's the idea.
___
On Sun, 2019-06-09 at 18:46 -0400, David A. Wheeler wrote:
> As syntactic sugar,
> I'd like to see selected special targets allowed as dependencies.
> When this happens, it's the same thing as if the target was listed
> as a dependency of the special target. E.g., you could express
> the same thing
On Sun, 09 Jun 2019 18:34:47 -0400, Paul Smith wrote:
> A pseudo-target .WONTCREATE:
> If that target exists in the makefile then the target existence
> checking is enabled, as follows:
> - Any PHONY rule is not considered
> - After any target is built that actually invoked at least one command,
>
I propose allowing $(name ...) as an abbrevation of $(call name ).
Problem:
You currently have to use the somewhat ugly construct $(call name...)
to call something. If you use functions a lot that's a little ugly.
There's also no need for it. If "name" is followed by whitespace it *cannot*
b
Idea: Allow certain special targets as dependencies
Problem:
It's often the case that a target also needs to be a special target. E.g.:
.PHONY: all
all: do-this do-that
Obviously this *works*, but it consumes many extra lines &
requires duplication of target names. For example,
if you misspell t
On Sun, 2019-06-09 at 17:13 -0400, David A. Wheeler wrote:
> I propose a new special target .MUSTCREATE.
> Its prerequisites would list the targets that would fail in error
> if the target rule is run and it fails to create the target.
> If there's nothing on the list, then all non-.PHONY targets w
Replying to myself:
If people are uncomfortable making this the default behavior,
then MAKETIMEADJUSTMAX could default to undefined or 0,
and then the outer check would be
if {defined(MAKETIMEADJUST) && MAKETIMEADJUST>0) {
...
}
That would mean that people would have to opt into the
behavior
I'd like to propose that "make" automatically correct timestamps by default.
Details below.
Problem:
Distributed systems are cheap now, enabling "make" to gets lots done
in a short amount of wall clock.
Unfortunately, it's impossible to keep clocks exactly aligned in a distributed
system.
Network
I've had several ideas I'd like to run them by everyone.
I'm posting them as separate emails so they can be discussed separately.
In this email I'd like to propose a new special target .MUSTCREATE.
Background:
In my makefiles a target should *always* be either .PHONY or
create that file when its r
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