Pass -fstrict-aliasing to the compiler when building a release build on darwin.
Darwin doesn't default to it being on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29350 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.rules b/Makefile.rules
index 6341c75..3fe8090 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -214,13 +214,18 @@
else
ifdef ENABLE_OPTIMIZED
BuildMode := Release
- # Don't use -fomit-frame-pointer on FreeBSD
+ # Don't use -fomit-frame-pointer on Darwin or FreeBSD.
ifneq ($(OS),FreeBSD)
- # Don't use -fomit-frame-pointer on Darwin, it breaks backtraces.
ifneq ($(OS),Darwin)
OmitFramePointer := -fomit-frame-pointer
endif
endif
+
+ # Darwin requires -fstrict-aliasing to be explicitly enabled.
+ ifeq ($(OS),Darwin)
+ EXTRA_OPTIONS += -fstrict-aliasing
+ endif
+
CXX.Flags := $(OPTIMIZE_OPTION) $(OmitFramePointer)
C.Flags := $(OPTIMIZE_OPTION) $(OmitFramePointer)
LD.Flags := $(OPTIMIZE_OPTION)
@@ -251,7 +256,7 @@
AR.Flags := cru
LibTool.Flags := --tag=CXX
-#Make Floating point ieee complient on alpha
+# Make Floating point IEEE compliant on Alpha.
ifeq ($(ARCH),Alpha)
CXX.Flags += -mieee -fPIC
CPP.BaseFlags += -mieee -fPIC