On 04/03/2013 09:48 PM, Stephen Warren wrote: > On 04/03/2013 01:14 AM, Vineet Gupta wrote: >> forgot to CC linux-arch >> >> On 04/03/2013 12:42 PM, Vineet Gupta wrote: >>> Currently, for every ARC kernel build I see the following: >>> >>> --------------->8----------------- >>> DTB arch/arc/boot/dts/angel4.dtb.S >>> AS arch/arc/boot/dts/angel4.dtb.o >>> LD arch/arc/boot/dts/built-in.o >>> rm arch/arc/boot/dts/angel4.dtb.S <-- forces rebuild next iter >>> CHK kernel/config_data.h >>> --------------->8----------------- > I assume that's because the file is an intermediate file, and only built > due to a chain of build rules, and hence make clean it up itself after > the build? Indeed - I should have made that explicit in the Changelog. >>> +.PRECIOUS: $(obj)/%.dtb.S >>> + >>> $(obj)/%.dtb.S: $(obj)/%.dtb >>> $(call cmd,dt_S_dtb) > I'm not sure if .PRECIOUS is correct here. That prevents make from > deleting the file if make is CTRL-C'd in the middle of generating it. > Couldn't that leave a stale/corrupt file around that'd break the build. > Judging by: > > http://www.gnu.org/software/make/manual/html_node/Special-Targets.html > > I think .SECONDARY might be a better choice? Does that solve the problem > you're seeing? Technically .SECONDARY is better - however it doesn't seem to work. Running make with various debug toggles doesn't seem to be helping with why .PRECIOUS works but not this. That is also likely reason for a bunch of other .PRECIOUS entries in the same file but no .SECONDARY. I presume this is something not specific to ARC kernel or my host. Can you try the .SECONDARY locally to see if it works for you. Thx, -Vineet -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
