On 05/08/2013 04:59 AM, Matthijs Kooijman wrote: > In commit b40b25ff (kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp), > dts building was changed to always use the C preprocessor. This meant > that the .dts file passed to dtc is not the original, but the > preprocessed one. > > When compiling with a separate build directory (i.e., with O=), this > preprocessed file will not live in the same directory as the original. > When the .dts file includes .dtsi files, dtc will look for them in the > build directory, not in the source directory and compilation will fail. > > The commit referenced above tried to fix this by passing arch/*/boot/dts > as an include path to dtc. However, for mips, the .dts files are not in > this directory, so dts compilation on mips breaks for some targets. > > Instead of hardcoding this particular include path, this commit just > uses the directory of the .dts file that is being compiled, which > effectively restores the previous behaviour wrt includes. For most .dts > files, this path is just the same as the previous hardcoded > arch/*/boot/dts path. > > This was tested on a mips (rt3052) and an arm (bcm2835) target. Reviewed-by: Stephen Warren <swarren@xxxxxxxxxx> (although I wonder if the .dts files shouldn't be in a standard location?)
