On 09:38 Thu 27 Sep     , Stephen Warren wrote:

On 09/26/2012 11:40 PM, Jean-Christophe PLAGNIOL-VILLARD wrote:

quoted

On 13:06 Tue 25 Sep     , Stephen Warren wrote:

quoted

From: Stephen Warren <redacted>

This series adds some build rules to run cpp on *.dts-cpp prior to
invoking dtc, and converts Tegra to the new rule as an example. What do
people think?

I assume that you've applied the dtc patches I sent yesterday. They
aren't in this series. See:

https://lists.ozlabs.org/pipermail/devicetree-discuss/2012-September/020182.html
https://lists.ozlabs.org/pipermail/devicetree-discuss/2012-September/020183.html
https://lists.ozlabs.org/pipermail/devicetree-discuss/2012-September/020181.html

Note: those patches are against upstream dtc. If you wish to test this
series, apply the dtc patches to upstream dtc, build it, and copy the
resultant dtc binary over the top of scripts/dtc/dtc.

Stephen Warren (3):
  kbuild: introduce cmd_dtc_cpp
  ARM: use cmd_dtc_cpp for compilation of *.dts-cpp to *.dtb
  ARM: tegra: compile all DT files with cpp 

I do not like the extention

It is a bit unwieldy. Perhaps *.dtsp, *.dtsip would be better.

quoted

can we run gcc everytime?

Not without editing all the device tree files; any property (or node)
name the starts with a # must be escaped; changed from "#foo" to "\#foo"
to avoid cpp attempting to interpret it as a pre-processor directive.

quoted

or just do as done for lds

*.dts.S

.S means assembly. (that's why I went with .dts-cpp rather than .dts.cpp).

on lds we do this way lds.S => lds

Best Regards,
J.