Sebastien,
I also don't understand why ftd.c is not depending on CONFIG_QE. That's another question ... but leads to error having your patch applied.
Right, fdt.c should not be included in the build unless both CONFIG_QE and CONFIG_OF_LIBFDT are defined. Previously this issue was hidden because all of qe.a was discarded by the linker. Would the following be a good fix for this problem?
-COBJS-$(CONFIG_OF_LIBFDT) += fdt.o +COBJS-$(and $(CONFIG_QE),$(CONFIG_OF_LIBFDT)) += fdt.o
yes - this should do it. Within fdt.c there's a CONFIG_QE conditional - you can remove this also with your approach.
Regards, André
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