On Thursday 2023-02-09 22:33, Dmitry Goncharov wrote: > >> .Po file contents control when an .o file -- and thus also >> the .Po file itself -- is remade. >> If a .Po file has no practical content, there is no indication >> that it needs to be remade. > >Absence of the depfile is such an indication. >Here is a sample bash session which demonstrates how gnu make and sun >make are able to build a missing depfile. > >$ ls >hello.c hello.h makefile >$ cat makefile >all: hello.tsk >hello.tsk: hello.o > gcc-10 -o $@ $^ > >hello.o: hello.c hello.Po > gcc-10 -c hello.c -MD -MF hello.Po > >hello.Po: > gcc-10 -c hello.c -MD -MF hello.Po > >include hello.Po
This is a GNU extension. If you try this with e.g. OpenBSD make, it will complain.
