From: Michael S. Tsirkin <mst@redhat.com>
Date: Mon, 7 Dec 2009 19:04:52 +0000 (+0200)
Subject: qemu: delete rule target on error
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7dbbbb0c9e4313cf2d2f6559b7899259fb09eb63;p=qemu.git

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>
---

diff --git a/rules.mak b/rules.mak
index 16713bacd7..5d9f684c24 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: