Compile qemu-error only once

common-obj-y = $(block-obj-y)

common-obj-y += $(net-obj-y)

common-obj-y += $(qobject-obj-y)

common-obj-y += readline.o console.o async.o

common-obj-y += readline.o console.o async.o qemu-error.o

common-obj-y += tcg-runtime.o host-utils.o

common-obj-y += irq.o ioport.o input.o

ifdef CONFIG_SOFTMMU

obj-y = vl.o monitor.o pci.o pci_host.o pcie_host.o machine.o gdbstub.o

obj-y += qemu-error.o qemu-timer.o

obj-y += qemu-timer.o

# virtio has to be here due to weird dependency between PCI and virtio-net.

# need to fix this properly

obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-pci.o virtio-serial-bus.o