----- On Oct 3, 2015, at 12:38 AM, dvhart dvh...@infradead.org wrote: > On Mon, Sep 28, 2015 at 03:16:53AM +0000, Mathieu Desnoyers wrote: >> ----- On Sep 27, 2015, at 10:10 PM, Wang Long long.wangl...@huawei.com wrote: >> >> > Some test's Makefile using "$(RM)" while the other's >> > using "rm -f". It is better to use one of them in all >> > tests. >> >> I agree that this disparity appears to be unwanted. We >> should settle on one or the other. >> >> > >> > "rm -f" is better, because it is less magic, and everyone >> > konws what is does. >> >> "$(RM)" is clearly defined as a Makefile implicit variable >> which defaults to "rm -f". >> Ref. >> https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html >> >> Leaving it as a variable is more flexible because then the >> default behavior can be overridden if need be, which is >> not the case of a hardcoded "rm -f". >> >> Following your line of argumentation, we should then >> invoke "gcc" directly in every Makefile because it is >> less magic than "$(CC)". This makes no sense. > > I don't think they can be compared so simply. Specifying a compiler is a > common > use case. Customizing the rm command is not, in my experience anyway, and like > Michael, I would definately have to look up what RM means. > > That said, I care more about consistency than which is used. Both are valid, > but > $(RM), while more flexible, will cost more people time to look up what it does > as it isn't commonly used than any benefit we're likely to see from its use. > > Meh. :-)
An example is "grm" when you install the opencsw repository packages on Solaris. In the unlikely example where someone would have a Solaris machine to build Linux, overriding various command names, including "rm", can be useful. This is just one example, there are probably others. Thanks, Mathieu > > -- > Darren Hart > Intel Open Source Technology Center -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
