diff options
Diffstat (limited to 'Makefile.rules')
| -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) |