[Qemu-devel] [PATCH] MAkefile: dont rebuild vhost for each target

["Michael S. Tsirkin" <mst@redhat.com>]

We rebuild vhost_net for each target, but there's
no real reason to, we only have 2 variants: with and
without vhost-net.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 Makefile.target     | 1 +
 hw/Makefile.objs    | 5 +++--
 hw/vhost_net_stub.c | 1 +
 3 files changed, 5 insertions(+), 2 deletions(-)
 create mode 100644 hw/vhost_net_stub.c

diff --git a/Makefile.target b/Makefile.target
index 8bbad38..f6fddbd 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -103,6 +103,7 @@ endif #CONFIG_BSD_USER
 #########################################################
 # System emulator target
 ifdef CONFIG_SOFTMMU
+CONFIG_NO_VHOST_NET = $(if $(subst n,,$(CONFIG_VHOST_NET)),n,y)
 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)
diff --git a/hw/Makefile.objs b/hw/Makefile.objs
index 2778035..360a43c 100644
--- a/hw/Makefile.objs
+++ b/hw/Makefile.objs
@@ -3,6 +3,9 @@ common-obj-y += loader.o
 common-obj-$(CONFIG_VIRTIO) += virtio-console.o
 common-obj-$(CONFIG_VIRTIO) += virtio-rng.o
 common-obj-$(CONFIG_VIRTIO_PCI) += virtio-pci.o
+common-obj-$(CONFIG_VHOST_NET) += vhost_net.o
+common-obj-$(CONFIG_VHOST_NET) += vhost.o
+common-obj-$(CONFIG_NO_VHOST_NET) += vhost_net_stub.o
 common-obj-y += fw_cfg.o
 common-obj-$(CONFIG_PCI) += pci_bridge_dev.o
 common-obj-$(CONFIG_PCI) += ioh3420.o xio3130_upstream.o xio3130_downstream.o
@@ -192,8 +195,6 @@ common-obj-$(CONFIG_XEN_BACKEND) += xen_console.o xenfb.o xen_disk.o xen_nic.o
 # need to fix this properly
 obj-$(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-$(CONFIG_VGA) += vga.o
 obj-$(CONFIG_SOFTMMU) += device-hotplug.o
diff --git a/hw/vhost_net_stub.c b/hw/vhost_net_stub.c
new file mode 100644
index 0000000..387b578
--- /dev/null
+++ b/hw/vhost_net_stub.c
@@ -0,0 +1 @@
+#include "vhost_net.c"
-- 
MST