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Commit 5dea6927 authored by Ying Wang's avatar Ying Wang
Browse files

Use @rpath and @loader_path to avoid absolute path 

With "-Wl,-rpath,@loader_path/../lib" the linker embeds
@loader_path/../lib as the target binary's rpath.
Here @loader_path means the path of the binary that initiates the
loading.
With "-install_name @rpath/libfoo.dylib " the linker runtime searches
libfoo.dylib in the binary's embeded rpath.

With this change you can call dlopen() without specifying the full path
of the shared library.

Change-Id: If9beb3f6f4642a377bff603bab5ba3fdb96211bf
parent 80469e4d

core/combo/HOST_darwin-x86.mk

+3 −7
Original line number Diff line number Diff line
@@ -80,12 +80,6 @@ $(foreach lib,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), \ 
    $(call _darwin-extract-and-include-single-whole-static-lib, $(lib)))

endef



ifeq (,$(filter /%,$(HOST_OUT_SHARED_LIBRARIES)))

ABP_HOST_OUT_SHARED_LIBRARIES := $(shell pwd)/$(HOST_OUT_SHARED_LIBRARIES)

else

ABP_HOST_OUT_SHARED_LIBRARIES := $(HOST_OUT_SHARED_LIBRARIES)

endif



define transform-host-o-to-shared-lib-inner

$(call darwin-extract-and-include-whole-static-libs)

$(hide) $(PRIVATE_CXX) \
@@ -100,13 +94,15 @@ $(hide) $(PRIVATE_CXX) \ 
        $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \

        $(PRIVATE_LDLIBS) \

        -o $@ \

        -install_name $(ABP_HOST_OUT_SHARED_LIBRARIES)/$(notdir $@) \

        -install_name @rpath/$(notdir $@) \

        -Wl,-rpath,@loader_path/../lib \

        $(PRIVATE_LDFLAGS) \

        $(HOST_LIBGCC)

endef



define transform-host-o-to-executable-inner

$(hide) $(PRIVATE_CXX) \

        -Wl,-rpath,@loader_path/../lib \

        -o $@ \

        $(PRE_LION_DYNAMIC_LINKER_OPTIONS) -headerpad_max_install_names \

        $(HOST_GLOBAL_LD_DIRS) \