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- Dictionary-phony/f(ə)ni/
combining form
- 1. forming nouns corresponding to words ending in -phone (such as telephony corresponding to telephone).
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Jan 27, 2010 · Now make clean will run as expected even if you do have a file named clean. In terms of Make, a phony target is simply a target that is always out-of-date, so whenever you ask make <phony_target>, it will run, independent from the state of the file system. Some common make targets that are often phony are: all, install, clean, distclean, TAGS ...
Jun 12, 2017 · So, better go with the approach to have one line declaring all the PHONY targets. If your Makefile is really huge, you could split it in several files and use include -- and have one .PHONY: line in each file. I disagree with the premise that a Makefile with all phony targets should be replaced by arbitrary scripts.
Dec 3, 2013 · True. A .PHONY target can have only dependencies, without any rule. In this case, make will not execute any rule, but will check if the dependencies are satisfied (and, if not, will execute their rules). Therefore, in your example, it is correct that both target1 and target2 call dostuff because it is a dependency. answered Dec 3, 2013 at 13:19.
Dec 11, 2019 · OK, thank you. basically. the .mk modules would never be directly called, but they would be (potentially) included in different "main" Makefiles that would be called. I didn't know if the .PHONY was local to that file or if each time it's encountered in a newly included module the newest statement overrides the previous one. – Kurt E. Clothier.
Oct 28, 2015 · If "all" is not a phony target, GNU Make checks whether a file named "all" exists and is older than its prerequisites. Try "make -d" and you will see the difference. Another important point is that the recipe of a phony target is always executed. If you take this example: echo "Done". echo "Hello World!"
Yes, that's allowed. (If you don't believe me, just try it!) answered Nov 11, 2010 at 22:29. Beta. 98.7k 18 156 155. 29. And in fact you can do that for any target. You can say a: b in one place and a: c in another and then the dependencies for a will be b and c. – tripleee.
Dec 18, 2020 · 2. .PHONY and % wildcard are explained in the GNU Make documentation. In short, .PHONY means that docker.% is a target but is not represented by a file in your current directory that has to be built. And % is a wildcard. the $* value in the commands will have the value of whatever % is when you call make on the target, e.g., make docker.foo.
Jul 20, 2012 · If A depends on B and B is phony, then A is phony too. So the dependency graph .PHONY ← B → A is waay surprising compared to .PHONY → B → A. (Another argument is that an implementation of make must handle the .PHONY target very special.) While this critique may seem rather theoretical (to pointless) - "since make is so ancient, its ...
Mar 13, 2021 · In a make rule tab-indented lines after the target: prerequisites line (always one logical line, possibly using line continuation as in your example) are command lines that are passed to a shell for execution when the target needs to be built.
Feb 13, 2015 · If you want to "emulate" a phony target with dependencies, you will have to create a real file with that name and use the touch command (on Unix systems). I needed a solution to only clean the directory if the makefiles were changed (i.e. the compiler flags were changed, so the object files needed to be recompiled).
