Re: How to tell make to not try to remake source files?

[Antonio Diaz Diaz]

Paul Smith wrote:
> On Sat, 2024-01-27 at 20:00 +0100, Antonio Diaz Diaz wrote:
> > In order to increase the efficiency of the build, I added empty
> > recipes to my makefiles to prevent 'make' from trying to remake
> > source files:
>
> A simpler and more effective way to increase efficiency and reduce the
> output of -d is to remove all the built-in rules.

Paul, thank you very much for your advice.

I have been running some tests and have found that 'MAKEFLAGS += -r' works 
also in GNU make 3.81. So I have added these two lines to the Makefile:

MAKEFLAGS += -r
.SUFFIXES :

The second one just in case someone uses an older version of GNU make.

BTW, these changes are (among others) for the Makefile of GNU ddrescue, 
where the original problem with the empty recipes was found.


Best regards,
Antonio.