build: move per-target hw/ objects to nested Makefile.objs

This completes the move to nested Makefiles for virtio and a few
other files that were not part of obj-TARGET-y, but still were
compiled separately for each target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Makefile.hw

@@ -19,7 +19,8 @@ all: $(hw-obj-y)
 	@true
 
 clean:
-	rm -f *.o */*.o *.d */*.d *.a */*.a *~ */*~ */*/*.d
+	rm -f $(addsuffix /*.o, $(dir $(sort $(hw-obj-y))))
+	rm -f $(addsuffix /*.d, $(dir $(sort $(hw-obj-y))))
 
 # Include automatically generated dependency files
--include $(wildcard *.d */*.d */*/*.d)
+-include $(patsubst %.o, %.d, $(hw-obj-y))

Makefile.target

@@ -1,11 +1,5 @@
 # -*- Mode: makefile -*-
 
-CONFIG_NO_PCI = $(if $(subst n,,$(CONFIG_PCI)),n,y)
-CONFIG_NO_KVM = $(if $(subst n,,$(CONFIG_KVM)),n,y)
-CONFIG_NO_XEN = $(if $(subst n,,$(CONFIG_XEN)),n,y)
-CONFIG_NO_GET_MEMORY_MAPPING = $(if $(subst n,,$(CONFIG_HAVE_GET_MEMORY_MAPPING)),n,y)
-CONFIG_NO_CORE_DUMP = $(if $(subst n,,$(CONFIG_HAVE_CORE_DUMP)),n,y)
-
 include ../config-host.mak
 include config-devices.mak
 include config-target.mak
@@ -122,19 +116,16 @@ endif #CONFIG_BSD_USER
 #########################################################
 # System emulator target
 ifdef CONFIG_SOFTMMU
+CONFIG_NO_PCI = $(if $(subst n,,$(CONFIG_PCI)),n,y)
+CONFIG_NO_KVM = $(if $(subst n,,$(CONFIG_KVM)),n,y)
+CONFIG_NO_XEN = $(if $(subst n,,$(CONFIG_XEN)),n,y)
+CONFIG_NO_GET_MEMORY_MAPPING = $(if $(subst n,,$(CONFIG_HAVE_GET_MEMORY_MAPPING)),n,y)
+CONFIG_NO_CORE_DUMP = $(if $(subst n,,$(CONFIG_HAVE_CORE_DUMP)),n,y)
 
 obj-y += arch_init.o cpus.o monitor.o gdbstub.o balloon.o ioport.o
-# virtio has to be here due to weird dependency between PCI and virtio-net.
-# need to fix this properly
-obj-$(CONFIG_NO_PCI) += pci-stub.o
-obj-$(CONFIG_VIRTIO) += virtio.o virtio-blk.o virtio-balloon.o virtio-net.o virtio-serial-bus.o
-obj-$(CONFIG_VIRTIO) += virtio-scsi.o
-obj-y += vhost_net.o
-obj-$(CONFIG_VHOST_NET) += vhost.o
-obj-$(CONFIG_REALLY_VIRTFS) += 9pfs/virtio-9p-device.o
+obj-y += hw/
 obj-$(CONFIG_KVM) += kvm-all.o
 obj-$(CONFIG_NO_KVM) += kvm-stub.o
-obj-$(CONFIG_VGA) += vga.o
 obj-y += memory.o savevm.o cputlb.o
 obj-$(CONFIG_HAVE_GET_MEMORY_MAPPING) += memory_mapping.o
 obj-$(CONFIG_HAVE_CORE_DUMP) += dump.o
@@ -148,21 +139,9 @@ QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
 QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
 
 # xen support
-obj-$(CONFIG_XEN) += xen-all.o xen_machine_pv.o xen_domainbuild.o xen-mapcache.o
+obj-$(CONFIG_XEN) += xen-all.o xen-mapcache.o
 obj-$(CONFIG_NO_XEN) += xen-stub.o
 
-# Inter-VM PCI shared memory
-CONFIG_IVSHMEM =
-ifeq ($(CONFIG_KVM), y)
-  ifeq ($(CONFIG_PCI), y)
-    CONFIG_IVSHMEM = y
-  endif
-endif
-obj-$(CONFIG_IVSHMEM) += ivshmem.o
-
-# Generic hotplugging
-obj-y += device-hotplug.o
-
 # Hardware support
 ifeq ($(TARGET_ARCH), sparc64)
 obj-y += hw/sparc64/

configure

@@ -3675,6 +3675,7 @@ mkdir -p $target_dir/9pfs
 mkdir -p $target_dir/hw
 mkdir -p $target_dir/hw/ide
 mkdir -p $target_dir/hw/usb
+mkdir -p $target_dir/hw/9pfs
 mkdir -p $target_dir/hw/kvm
 mkdir -p $target_dir/hw/$TARGET_ARCH
 mkdir -p $target_dir/hw/$TARGET_BASE_ARCH

hw/9pfs/Makefile.objs

@@ -5,3 +5,5 @@ hw-obj-y += virtio-9p-coth.o cofs.o codir.o cofile.o
 hw-obj-y += coxattr.o virtio-9p-synth.o
 hw-obj-$(CONFIG_OPEN_BY_HANDLE) +=  virtio-9p-handle.o
 hw-obj-y += virtio-9p-proxy.o
+
+obj-y += virtio-9p-device.o

hw/Makefile.objs

@@ -145,3 +145,21 @@ common-obj-$(CONFIG_BRLAPI) += baum.o
 # xen backend driver support
 common-obj-$(CONFIG_XEN_BACKEND) += xen_backend.o xen_devconfig.o
 common-obj-$(CONFIG_XEN_BACKEND) += xen_console.o xenfb.o xen_disk.o xen_nic.o
+
+# Per-target files
+# virtio has to be here due to weird dependency between PCI and virtio-net.
+# need to fix this properly
+obj-$(CONFIG_VIRTIO) += virtio.o virtio-blk.o virtio-balloon.o virtio-net.o
+obj-$(CONFIG_VIRTIO) += virtio-serial-bus.o virtio-scsi.o
+obj-$(CONFIG_SOFTMMU) += vhost_net.o
+obj-$(CONFIG_VHOST_NET) += vhost.o
+obj-$(CONFIG_REALLY_VIRTFS) += 9pfs/
+obj-$(CONFIG_NO_PCI) += pci-stub.o
+obj-$(CONFIG_VGA) += vga.o
+obj-$(CONFIG_SOFTMMU) += device-hotplug.o
+obj-$(CONFIG_XEN) += xen_domainbuild.o xen_machine_pv.o
+
+# Inter-VM PCI shared memory
+ifeq ($(CONFIG_PCI), y)
+obj-$(CONFIG_KVM) += ivshmem.o
+endif