* [PATCH] kvm tools: disable LTO by default
@ 2012-11-20 0:31 Sasha Levin
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From: Sasha Levin @ 2012-11-20 0:31 UTC (permalink / raw)
To: penberg; +Cc: asias, kvm, rminnich, Sasha Levin
A bug only seen with LTO enabled was reported by Ron Minnich. Since the issue
appears to be a linker issue, we disable LTO by default until it's more stable.
We can still run LTO builds by setting LTO=1.
Reported-by: Ron Minnich <rminnich@gmail.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---
tools/kvm/Makefile | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/kvm/Makefile b/tools/kvm/Makefile
index c105de1..de11060 100644
--- a/tools/kvm/Makefile
+++ b/tools/kvm/Makefile
@@ -221,9 +221,11 @@ ifeq ($(call try-cc,$(SOURCE_AIO),$(FLAGS_AIO) -static),y)
LIBS_STATOPT += -laio
endif
-FLAGS_LTO := -flto
-ifeq ($(call try-cc,$(SOURCE_HELLO),$(FLAGS_LTO)),y)
- CFLAGS += $(FLAGS_LTO)
+ifeq ($(LTO),1)
+ FLAGS_LTO := -flto
+ ifeq ($(call try-cc,$(SOURCE_HELLO),$(FLAGS_LTO)),y)
+ CFLAGS += $(FLAGS_LTO)
+ endif
endif
ifneq ($(call try-build,$(SOURCE_STATIC),-static,),y)
--
1.8.0
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2012-11-20 0:31 [PATCH] kvm tools: disable LTO by default Sasha Levin
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