cav-octeon3 kexec/kdump should build as template feature. Build kexec/kdump, should change kernel options After make all, kexec-tools also not build in rootfs as default.
1) configure --enable-rootfs=glibc-std --enable-board=cav-octeon3 --enable-kernel=preempt-rt --enable-jobs=16 --enable-parallel-pkgbuilds=16 2) make all Check kexec/kdump kernel options and kexec-tools