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strip exported symbols from tools that build with TOOL_NO_EXPORTS=1.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65543 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-02-26 17:47:49 +00:00
parent 843daf40b6
commit 61863a3d3d
1 changed files with 18 additions and 0 deletions
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18
Makefile.rules
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@ -1066,6 +1066,24 @@ else
ToolBuildPath := $(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT) ToolBuildPath := $(ToolDir)/$(strip $(TOOLNAME))$(EXEEXT)
endif 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=Driver.map
endif
endif
#--------------------------------------------------------- #---------------------------------------------------------
# Provide targets for building the tools # Provide targets for building the tools
#--------------------------------------------------------- #---------------------------------------------------------