[Qemu-devel] [PATCH v6 03/15] rules.mak: Avoid double include

[Fam Zheng]

Signed-off-by: Fam Zheng <address@hidden>
---
 rules.mak | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rules.mak b/rules.mak
index 4a8f464..7d8cf06 100644
--- a/rules.mak
+++ b/rules.mak
@@ -1,3 +1,5 @@
+ifeq ($(RULES_MAK),)
+RULES_MAK := 1
 
 COMMA := ,
 
@@ -355,3 +357,4 @@ define unnest-vars
         $(eval -include $(patsubst %.o,%.d,$(patsubst %.mo,%.d,$($v))))
         $(eval $v := $(filter-out %/,$($v))))
 endef
+endif
-- 
2.8.3