Do "make defconfig" on x86-64, fire up menuconfig and select the frame pointer uwinder (under kernel hacking -> choose unwinder) and:
$ make Makefile:966: *** "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel". Stop. Confirming: $ grep UNWINDER .config # CONFIG_UNWINDER_ORC is not set CONFIG_UNWINDER_FRAME_POINTER=y Rob
