1ffec1cc4d
The anonymous namespace is introduced to handle cases when linker can not find the caller. This usually happens when caller code was not loaded by dynamic linker; for example mono-generated code. Bug: http://b/25844435 Bug: http://b/22548808 Change-Id: I9e5b1d23c1c75bc78548d68e79216a6a943a33cf
66 lines
2.7 KiB
Makefile
66 lines
2.7 KiB
Makefile
LOCAL_PATH:= $(call my-dir)
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#
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# libdl
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#
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include $(CLEAR_VARS)
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# NOTE: --exclude-libs=libgcc.a makes sure that any symbols libdl.so pulls from
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# libgcc.a are made static to libdl.so. This in turn ensures that libraries that
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# a) pull symbols from libgcc.a and b) depend on libdl.so will not rely on libdl.so
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# to provide those symbols, but will instead pull them from libgcc.a. Specifically,
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# we use this property to make sure libc.so has its own copy of the code from
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# libgcc.a it uses.
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#
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# DO NOT REMOVE --exclude-libs!
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LOCAL_LDFLAGS := -Wl,--exclude-libs=libgcc.a
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# for x86, exclude libgcc_eh.a for the same reasons as above
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LOCAL_LDFLAGS_x86 := -Wl,--exclude-libs=libgcc_eh.a
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LOCAL_LDFLAGS_x86_64 := $(LOCAL_LDFLAGS_x86)
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LOCAL_LDFLAGS_arm += -Wl,--version-script=$(LOCAL_PATH)/libdl.arm.map
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LOCAL_LDFLAGS_arm64 += -Wl,--version-script=$(LOCAL_PATH)/libdl.arm64.map
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LOCAL_LDFLAGS_mips += -Wl,--version-script=$(LOCAL_PATH)/libdl.mips.map
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LOCAL_LDFLAGS_mips64 += -Wl,--version-script=$(LOCAL_PATH)/libdl.mips64.map
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LOCAL_LDFLAGS_x86 += -Wl,--version-script=$(LOCAL_PATH)/libdl.x86.map
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LOCAL_LDFLAGS_x86_64 += -Wl,--version-script=$(LOCAL_PATH)/libdl.x86_64.map
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LOCAL_SRC_FILES:= libdl.c
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LOCAL_CFLAGS := -Wall -Wextra -Wunused -Werror
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LOCAL_CXX_STL := none
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LOCAL_MODULE := libdl
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LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk \
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$(LOCAL_PATH)/libdl.arm.map \
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$(LOCAL_PATH)/libdl.arm64.map \
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$(LOCAL_PATH)/libdl.mips.map \
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$(LOCAL_PATH)/libdl.mips64.map \
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$(LOCAL_PATH)/libdl.x86.map \
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$(LOCAL_PATH)/libdl.x86_64.map \
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# NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a
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# few symbols from libc. Using --no-undefined here results in having to link
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# against libc creating a circular dependency which is removed and we end up
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# with missing symbols. Since this library is just a bunch of stubs, we set
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# LOCAL_ALLOW_UNDEFINED_SYMBOLS to remove --no-undefined from the linker flags.
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LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
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LOCAL_SYSTEM_SHARED_LIBRARIES :=
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LOCAL_SANITIZE := never
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include $(BUILD_SHARED_LIBRARY)
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# A dummy libdl.a. Need for static executables using the LLVM unwinder. Most
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# functions default to failure, others use a sensible default (dl_iterate_phdr()
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# returns 0, as would happen if the user iterated over every phdr).
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include $(CLEAR_VARS)
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LOCAL_SRC_FILES:= libdl.c
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LOCAL_CFLAGS := -Wall -Wextra -Wunused -Werror
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LOCAL_CXX_STL := none
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LOCAL_MODULE := libdl
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LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
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LOCAL_SANITIZE := never
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include $(BUILD_STATIC_LIBRARY)
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