bug-make
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: say which of .PRECIOUS: %.o *.o file.o will actually work


From: Dmitry Goncharov
Subject: Re: say which of .PRECIOUS: %.o *.o file.o will actually work
Date: Wed, 9 Oct 2024 20:01:05 -0400

On Tue, Oct 8, 2024 at 11:16 PM Dan Jacobson <jidanni@jidanni.org> wrote:
>
> Manual says:
>
>    You can list the target pattern of an implicit rule (such as '%.o')
>    as a prerequisite of the special target '.PRECIOUS' to preserve
>    intermediate files made by implicit rules whose target patterns match
>    that file's name; see *note Interrupts::.
>
> Well say which of
> .PRECIOUS: %.o
> .PRECIOUS: *.o
> .PRECIOUS: file.o
> will actually work.
>
> The words above make the reader think they should use the first form.
>
> But in my experiments, only this last one works.

.PRECIOUS: %.o has the desired effect when a related implicit rule is used.
For example, the following marks hello.x and hello.q as precious.

.PRECIOUS: %.x %.q
all: hello.x
%.x: %.q; $(info $@ from $<)
%.q:;

regards, Dmitry



reply via email to

[Prev in Thread] Current Thread [Next in Thread]