Close list item tag, to conform with the style in this file. It's optional

[oota-llvm.git] / Makefile.rules

diff --git a/Makefile.rules b/Makefile.rules
index c9251e7e6376d4c394259804e561a118f685baeb..56d3a8739edefb302cc6c641d73dcb36a7aaa32f 100644 (file)
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -480,10 +480,10 @@ ifdef UNIVERSAL
   endif
   UNIVERSAL_ARCH_OPTIONS := $(UNIVERSAL_ARCH:%=-arch %)
   CompileCommonOpts += $(UNIVERSAL_ARCH_OPTIONS)
-  Relink.Flags := $(UNIVERSAL_ARCH_OPTIONS:%=-XCClinker %)
+  Relink.Flags := $(UNIVERSAL_ARCH_OPTIONS)
   ifdef UNIVERSAL_SDK_PATH
     CompileCommonOpts += -isysroot $(UNIVERSAL_SDK_PATH)
-    Relink.Flags      += -XCClinker -isysroot -XCClinker $(UNIVERSAL_SDK_PATH)
+    Relink.Flags      += -isysroot $(UNIVERSAL_SDK_PATH)
   endif
 
   # Building universal cannot compute dependencies automatically.
@@ -1066,6 +1066,24 @@ else
 ToolBuildPath   := $(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT)
 endif
 
+#---------------------------------------------------------
+# Prune Exports
+#---------------------------------------------------------
+
+# If the tool opts in with TOOL_NO_EXPORTS, optimize startup time of the app by
+# not exporting all of the weak symbols from the binary.  This reduces dyld
+# startup time by 4x on darwin in some cases.
+ifdef TOOL_NO_EXPORTS
+ifeq ($(OS),Darwin)
+LD.Flags += -Wl,-exported_symbol -Wl,_main
+endif
+
+ifeq ($(OS), $(filter $(OS), Linux NetBSD FreeBSD))
+LD.Flags += -Wl,--version-script=$(LLVM_SRC_ROOT)/autoconf/ExportMap.map
+endif
+endif
+
+
 #---------------------------------------------------------
 # Provide targets for building the tools
 #---------------------------------------------------------