From 90f445e1c9a2ce05d0b68c3159892181cdd600d6 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Mon, 7 Dec 2009 21:04:52 +0200
Subject: [PATCH] qemu: delete rule target on error

Instruct make to remove any rule target on error. This prevetns
situation where there was an error during build but generated file still
stays behind.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit 7dbbbb0c9e4313cf2d2f6559b7899259fb09eb63)
---
 rules.mak | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rules.mak b/rules.mak
index 16713bacd..5d9f684c2 100644
--- a/rules.mak
+++ b/rules.mak
@@ -47,3 +47,6 @@ cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
 %.h-timestamp: %.mak
 	$(call quiet-command, sh $(SRC_PATH)/create_config < $< > $@, "  GEN   $*.h")
 	@cmp $@ $*.h >/dev/null 2>&1 || cp $@ $*.h
+
+# will delete the target of a rule if commands exit with a nonzero exit status
+.DELETE_ON_ERROR:
-- 
2.39.5