hw/i386/xen/meson.build - third_party/qemu - Git at Google

 i386_ss.add(when: 'CONFIG_XEN', if_true: files(
   'xen-hvm.c',
   'xen_apic.c',
   'xen_pvdevice.c',
 ))

 i386_ss.add(when: 'CONFIG_XEN_BUS', if_true: files(
   'xen_platform.c',
 ))
	i386_ss.add(when: 'CONFIG_XEN', if_true: files(
	'xen-hvm.c',
	'xen_apic.c',
	'xen_pvdevice.c',
	))

	i386_ss.add(when: 'CONFIG_XEN_BUS', if_true: files(
	'xen_platform.c',
	))