Now assume that file 'hello' is a text file containing some data, which was created after 'hello.c' file. So the modification (or creation) time-stamp of 'hello' will be newer than that of the 'hello.c'. So when we will invoke 'make hello' from command line, it will print as: make: `hello' is up to date.
#Lilypond makefile code#
Now access the 'hello.c' file and put some white spaces in it, which doesn't affect the code syntax or logic then save and quit. Now the modification time-stamp of hello.c is newer than that of the 'hello'. Now if you invoke 'make hello', it will execute the commands as: cc hello.c -o helloĪnd the file 'hello' (text file) will be overwritten with a new binary file 'hello' (result of above compilation command). PHONY:helloĪnd then invoke 'make hello', it will ignore any file present in the pwd 'test' and execute the command every time.
TARGET1 -> PHONY_FORWARDER1 -> PHONY_FORWARDER2 -> TARGET2 There's also one important tricky treat of ".PHONY" - when a physical target depends on phony target that depends on another physical target: Now suppose, that 'hello' target has no dependencies declared: hello:Īnd 'hello' file is already present in the pwd 'test', then 'make hello' will always show as: make: `hello' is up to date. You'd simply expect that if you updated TARGET2, then TARGET1 should be considered stale against TARGET1, so TARGET1 should be rebuild. The tricky part is when TARGET2 isn't stale against TARGET1 - in which case you should expect that TARGET1 shouldn't be rebuild. This surprisingly doesn't work because: the phony target was run anyway (as phony targets normally do), which means that the phony target was considered updated. first do 'make prepare' to prepare the "source files".Īnd because of that TARGET1 is considered stale against the phony target.play around with that by touching particular files to see them updated.You can see that fileall depends on file1 indirectly through a phony target - but it always gets rebuilt due to this dependency. If you change the dependency in fileall from filefwd to file, now fileall does not get rebuilt every time, but only when any of dependent targets is stale against it as a file. I often use them to tell the default target not to fire. Without PHONY, make superclean would fire clean, andsomethingelse, and catcher superclean but with PHONY, make superclean won't fire the catcher superclean.
We don't have to worry about telling make the clean target is PHONY, because it isn't completely phony.
#Lilypond makefile pdf#
pdf extension (greatmusic.Though it never produces the clean file, it has commands to fire so make will think it's a final target. And finally they both open in frescobaldi preview when I secondary click in nautilus and pick open with frescobaldi.
They also open in evince (Document viewer) when double clicked in nautilus (Files). I tried to open both of them from “File > Open” or “CTRL + O” and they both open in “Music View” (the one on the right). For testing purposes I first exported rendering via “print as pdf” from print dialog, and then with lilypond under different name.Mine is not installed as flatpack, but with dnf.I never used frescobaldi before (cranked notation in vim and had makefiles). Your post intrigued me so I quickly installed lilypond & frescobaldi to see what’s going on. I used to play with lilypond some years ago (maybe even whole decade ago).
0 kommentar(er)
