linux-kernel - [PATCH 08/14] tools/virtio: pass KCFLAGS to module build

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Message-ID: <5473e5a5dfd2fcd261a778f2017cac669c031f23.1764873799.git.mst@redhat.com>
Date: Thu, 4 Dec 2025 13:46:18 -0500
From: "Michael S. Tsirkin" <mst@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Jason Wang <jasowang@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	virtualization@...ts.linux.dev
Subject: [PATCH 08/14] tools/virtio: pass KCFLAGS to module build

Update the mod target to pass KCFLAGS with the in-tree vhost driver
include path. This way vhost_test can find vhost headers.

Created using Cursor CLI.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 tools/virtio/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/virtio/Makefile b/tools/virtio/Makefile
index e25e99c1c3b7..a60316211df6 100644
--- a/tools/virtio/Makefile
+++ b/tools/virtio/Makefile
@@ -20,8 +20,9 @@ CFLAGS += -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I. -I../include/ -I ../
 CFLAGS += -pthread
 LDFLAGS += -pthread
 vpath %.c ../../drivers/virtio ../../drivers/vhost
+BUILD=KCFLAGS="-I "`pwd`/../../drivers/vhost ${MAKE} -C `pwd`/../.. V=${V}
 mod:
-	${MAKE} -C `pwd`/../.. M=`pwd`/vhost_test V=${V}
+	${BUILD} M=`pwd`/vhost_test
 
 #oot: build vhost as an out of tree module for a distro kernel
 #no effort is taken to make it actually build or work, but tends to mostly work
-- 
MST