Hi Stephen,
On Thu, Dec 27, 2012 at 4:03 PM, Stephen Warren swarren@wwwdotorg.org wrote:
On 12/26/2012 03:28 PM, Simon Glass wrote:
Include file support in dtc is still not available in common distributions so we need to keep our preprocessing arrangement around for a little longer.
But # is commonly used in FDT files, so use sed instead of cpp for this preprocessing.
This sounds like the wrong approach to me. I'd suggest using what I proposed for the kernel:
cmd_dtc_cpp = $(CPP) $(cpp_flags) -D__DTS__ -x assembler-with-cpp -o $(dtc-tmp) $< ; \ $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $(dtc-tmp)
The "-x assembler-with-cpp" is what solves the # problem IIRC.
I originally used CPP as an expedient means of converting the ARCH_CPU_DTS symbol until we all have a dtc with include path support.
Are you saying that we want to actually use the CPP on tthe device tree and (presumably) use U-Boot include files within the FDT?
Regards, Simon