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strip exported symbols from tools that build with TOOL_NO_EXPORTS=1.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65543 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1066,6 +1066,24 @@ else
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ToolBuildPath := $(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT)
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endif
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#---------------------------------------------------------
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# Prune Exports
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#---------------------------------------------------------
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# If the tool opts in with TOOL_NO_EXPORTS, optimize startup time of the app by
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# not exporting all of the weak symbols from the binary. This reduces dyld
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# startup time by 4x on darwin in some cases.
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ifdef TOOL_NO_EXPORTS
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ifeq ($(OS),Darwin)
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LD.Flags += -Wl,-exported_symbol -Wl,_main
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endif
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ifeq ($(OS), $(filter $(OS), Linux NetBSD FreeBSD))
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LD.Flags += -Wl,--version-script=Driver.map
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endif
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endif
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#---------------------------------------------------------
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# Provide targets for building the tools
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#---------------------------------------------------------
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