lguest: fix failure to find linux/virtio_types.h

We want to use the local kernel headers, but -I../../include/uapi leads us into
a world of hurt.  Instead we create a dummy include/ dir with symlinks.

If we just use #include "../../include/uapi/linux/virtio_blk.h" we get:

	../../include/uapi/linux/virtio_blk.h:31:32: fatal error: linux/virtio_types.h: No such file or directory
	 #include <linux/virtio_types.h>

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 7 insertions, 1 deletions

diff --git a/tools/lguest/Makefile b/tools/lguest/Makefile
index 97bca4871ea3..a107b5e4da13 100644
--- a/tools/lguest/Makefile
+++ b/tools/lguest/Makefile
@@ -1,7 +1,13 @@
 # This creates the demonstration utility "lguest" which runs a Linux guest.
-CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE
+CFLAGS:=-m32 -Wall -Wmissing-declarations -Wmissing-prototypes -O3 -U_FORTIFY_SOURCE -Iinclude
 
 all: lguest
 
+include/linux/virtio_types.h: ../../include/uapi/linux/virtio_types.h
+        mkdir -p include/linux 2>&1 || true
+        ln -sf ../../../../include/uapi/linux/virtio_types.h $@
+
+lguest: include/linux/virtio_types.h
+
 clean:
         rm -f lguest