build: move net/ objects to nested Makefile.objs

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

Makefile.objs

@@ -47,21 +47,6 @@ block-obj-$(CONFIG_POSIX) += posix-aio-compat.o
 block-obj-$(CONFIG_LINUX_AIO) += linux-aio.o
 block-obj-y += block/
 
-net-obj-y = net.o
-net-nested-y = queue.o checksum.o util.o
-net-nested-y += socket.o
-net-nested-y += dump.o
-net-nested-$(CONFIG_POSIX) += tap.o
-net-nested-$(CONFIG_LINUX) += tap-linux.o
-net-nested-$(CONFIG_WIN32) += tap-win32.o
-net-nested-$(CONFIG_BSD) += tap-bsd.o
-net-nested-$(CONFIG_SOLARIS) += tap-solaris.o
-net-nested-$(CONFIG_AIX) += tap-aix.o
-net-nested-$(CONFIG_HAIKU) += tap-haiku.o
-net-nested-$(CONFIG_SLIRP) += slirp.o
-net-nested-$(CONFIG_VDE) += vde.o
-net-obj-y += $(addprefix net/, $(net-nested-y))
-
 ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
 # Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
 # only pull in the actual virtio-9p device if we also enabled virtio.
@@ -78,7 +63,7 @@ fsdev-obj-$(CONFIG_VIRTFS) += $(addprefix fsdev/, $(fsdev-nested-y))
 # single QEMU executable should support all CPUs and machines.
 
 common-obj-y = $(block-obj-y) blockdev.o
-common-obj-y += $(net-obj-y)
+common-obj-y += net.o net/
 common-obj-y += qom/
 common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
 common-obj-y += readline.o console.o cursor.o

net/Makefile.objs

@@ -0,0 +1,12 @@
+common-obj-y = queue.o checksum.o util.o
+common-obj-y += socket.o
+common-obj-y += dump.o
+common-obj-$(CONFIG_POSIX) += tap.o
+common-obj-$(CONFIG_LINUX) += tap-linux.o
+common-obj-$(CONFIG_WIN32) += tap-win32.o
+common-obj-$(CONFIG_BSD) += tap-bsd.o
+common-obj-$(CONFIG_SOLARIS) += tap-solaris.o
+common-obj-$(CONFIG_AIX) += tap-aix.o
+common-obj-$(CONFIG_HAIKU) += tap-haiku.o
+common-obj-$(CONFIG_SLIRP) += slirp.o
+common-obj-$(CONFIG_VDE) += vde.o