patching file grub-core/kern/emu/hostdisk.c checking build system type... armv7l-unknown-linux-gnueabi checking host system type... armv7l-unknown-linux-gnueabi checking target system type... armv7l-unknown-linux-gnueabi checking for a BSD-compatible install... /bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... build-aux/install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes configure: error: unsupported CPU: "armv7l"