build/clang_darwin: Add the ASAN dynamic library.
 - Now with spelling fix for -lstdc++.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163527 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/make/platform/clang_darwin.mk b/make/platform/clang_darwin.mk
index d1788c4..0585877 100644
--- a/make/platform/clang_darwin.mk
+++ b/make/platform/clang_darwin.mk
@@ -61,6 +61,9 @@
 Configs += asan_osx
 UniversalArchs.asan_osx := $(call CheckArches,i386 x86_64,asan_osx)
 
+Configs += asan_osx_dynamic
+UniversalArchs.asan_osx_dynamic := $(call CheckArches,i386 x86_64,asan_osx_dynamic)
+
 # If RC_SUPPORTED_ARCHS is defined, treat it as a list of the architectures we
 # are intended to support and limit what we try to build to that.
 #
@@ -95,6 +98,9 @@
 CFLAGS.10.4		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 # FIXME: We can't build ASAN with our stub SDK yet.
 CFLAGS.asan_osx         := $(CFLAGS) -mmacosx-version-min=10.5 -fno-builtin
+CFLAGS.asan_osx_dynamic := \
+	$(CFLAGS) -mmacosx-version-min=10.5 -fno-builtin \
+	-DMAC_INTERPOSE_FUNCTIONS=1
 
 CFLAGS.osx.i386		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.osx.x86_64	:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
@@ -103,6 +109,10 @@
 CFLAGS.profile_osx.i386   := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.profile_osx.x86_64 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 
+# Configure the asan_osx_dynamic library to be built shared.
+SHARED_LIBRARY.asan_osx_dynamic := 1
+LDFLAGS.asan_osx_dynamic := -framework Foundation -lstdc++
+
 FUNCTIONS.eprintf := eprintf
 FUNCTIONS.10.4 := eprintf floatundidf floatundisf floatundixf
 
@@ -112,6 +122,9 @@
 
 FUNCTIONS.asan_osx := $(AsanFunctions) $(InterceptionFunctions) \
                                        $(SanitizerCommonFunctions)
+FUNCTIONS.asan_osx_dynamic := $(AsanFunctions) $(InterceptionFunctions) \
+                              $(SanitizerCommonFunctions) \
+	                      $(AsanDynamicFunctions)
 
 CCKEXT_COMMON_FUNCTIONS := \
 	absvdi2 \