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| author | Chris Lattner <sabre@nondot.org> | 2009-02-26 17:47:49 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-02-26 17:47:49 +0000 |
| commit | 61863a3d3dc7441b5aec3b8d603a9f43689aa1b5 (patch) | |
| tree | 91478409a750153efb95776e617c677f1c83e961 | |
| parent | 843daf40b646d1eeeedc6f092d9c1c1d1e991d14 (diff) | |
| download | llvm-61863a3d3dc7441b5aec3b8d603a9f43689aa1b5.tar.gz llvm-61863a3d3dc7441b5aec3b8d603a9f43689aa1b5.tar.bz2 llvm-61863a3d3dc7441b5aec3b8d603a9f43689aa1b5.tar.xz | |
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
| -rw-r--r-- | Makefile.rules | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Makefile.rules b/Makefile.rules index c9251e7e63..388372e0a9 100644 --- a/Makefile.rules +++ b/Makefile.rules @@ -1067,6 +1067,24 @@ 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=Driver.map +endif +endif + + +#--------------------------------------------------------- # Provide targets for building the tools #--------------------------------------------------------- all-local:: $(ToolBuildPath) |