979f9f9b18
We only support relocation packing inside lld now, remove calls to the standalone relocation packer. Any shared library built with LOCAL_USE_CLANG_LLD := false will no longer have relocation packing. This will also prevent relocation packing on prebuilt shared libraries. Also enables relocation packing on Darwin since lld will work on Darwin. Bug: 110715614 Test: m checkbuild Change-Id: Ib4d4bc86f164d05dd78455c8e7605d4b4f5a2a77
159 lines
6.9 KiB
Makefile
159 lines
6.9 KiB
Makefile
###########################################################
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## Standard rules for building any target-side binaries
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## with dynamic linkage (dynamic libraries or executables
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## that link with dynamic libraries)
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##
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## Files including this file must define a rule to build
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## the target $(linked_module).
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###########################################################
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# This constraint means that we can hard-code any $(TARGET_*) variables.
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ifdef LOCAL_IS_HOST_MODULE
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$(error This file should not be used to build host binaries. Included by (or near) $(lastword $(filter-out config/%,$(MAKEFILE_LIST))))
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endif
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# The name of the target file, without any path prepended.
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# This duplicates logic from base_rules.mk because we need to
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# know its results before base_rules.mk is included.
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include $(BUILD_SYSTEM)/configure_module_stem.mk
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intermediates := $(call local-intermediates-dir,,$(LOCAL_2ND_ARCH_VAR_PREFIX))
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# Define the target that is the unmodified output of the linker.
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# The basename of this target must be the same as the final output
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# binary name, because it's used to set the "soname" in the binary.
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# The includer of this file will define a rule to build this target.
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linked_module := $(intermediates)/LINKED/$(notdir $(my_installed_module_stem))
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ALL_ORIGINAL_DYNAMIC_BINARIES += $(linked_module)
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# Because TARGET_SYMBOL_FILTER_FILE depends on ALL_ORIGINAL_DYNAMIC_BINARIES,
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# the linked_module rules won't necessarily inherit the PRIVATE_
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# variables from LOCAL_BUILT_MODULE. This tells binary.make to explicitly
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# define the PRIVATE_ variables for linked_module as well as for
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# LOCAL_BUILT_MODULE.
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LOCAL_INTERMEDIATE_TARGETS := $(linked_module)
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###################################
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include $(BUILD_SYSTEM)/use_lld_setup.mk
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include $(BUILD_SYSTEM)/binary.mk
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###################################
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###########################################################
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## Store a copy with symbols for symbolic debugging
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###########################################################
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ifeq ($(LOCAL_UNSTRIPPED_PATH),)
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my_unstripped_path := $(TARGET_OUT_UNSTRIPPED)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
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else
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my_unstripped_path := $(LOCAL_UNSTRIPPED_PATH)
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endif
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symbolic_input := $(linked_module)
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symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
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$(symbolic_output) : $(symbolic_input)
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@echo "target Symbolic: $(PRIVATE_MODULE) ($@)"
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$(copy-file-to-target)
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###########################################################
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## Store breakpad symbols
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###########################################################
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ifeq ($(BREAKPAD_GENERATE_SYMBOLS),true)
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my_breakpad_path := $(TARGET_OUT_BREAKPAD)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
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breakpad_input := $(linked_module)
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breakpad_output := $(my_breakpad_path)/$(my_installed_module_stem).sym
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$(breakpad_output) : $(breakpad_input) | $(BREAKPAD_DUMP_SYMS) $(PRIVATE_READELF)
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@echo "target breakpad: $(PRIVATE_MODULE) ($@)"
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@mkdir -p $(dir $@)
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$(hide) if $(PRIVATE_READELF) -S $< > /dev/null 2>&1 ; then \
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$(BREAKPAD_DUMP_SYMS) -c $< > $@ ; \
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else \
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echo "skipped for non-elf file."; \
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touch $@; \
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fi
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$(LOCAL_BUILT_MODULE) : $(breakpad_output)
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endif
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###########################################################
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## Strip
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###########################################################
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strip_input := $(symbolic_output)
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strip_output := $(LOCAL_BUILT_MODULE)
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my_strip_module := $(firstword \
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$(LOCAL_STRIP_MODULE_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) \
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$(LOCAL_STRIP_MODULE))
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ifeq ($(my_strip_module),)
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my_strip_module := mini-debug-info
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endif
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ifeq ($(my_strip_module),mini-debug-info)
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# Don't use mini-debug-info on mips (both 32-bit and 64-bit). objcopy checks that all
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# SH_MIPS_DWARF sections having name prefix .debug_ or .zdebug_, so there seems no easy
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# way using objcopy to remove all debug sections except .debug_frame on mips.
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ifneq ($(filter mips mips64,$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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my_strip_module := true
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endif
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endif
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ifeq ($(my_use_clang_lld),true)
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# b/80093681: GNU strip and objcopy --{add,remove}-section have bug in handling
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# GNU_RELRO segment of files lnked by clang lld; so they are replaced
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# by llvm-strip and llvm-objcopy here.
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$(strip_output): PRIVATE_OBJCOPY_ADD_SECTION := $(LLVM_OBJCOPY)
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$(strip_output): PRIVATE_STRIP := $(LLVM_STRIP)
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$(strip_output): PRIVATE_STRIP_O_FLAG :=
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# GNU strip keeps .ARM.attributes section even with -strip-all,
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# so here pass -keep=.ARM.attributes to llvm-strip.
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$(strip_output): PRIVATE_STRIP_ALL_FLAGS := -strip-all -keep=.ARM.attributes
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else
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$(strip_output): PRIVATE_OBJCOPY_ADD_SECTION := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
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$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
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$(strip_output): PRIVATE_STRIP_O_FLAG := -o
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$(strip_output): PRIVATE_STRIP_ALL_FLAGS := --strip-all
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endif
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# PRIVATE_OBJCOPY is not changed to llvm-objcopy yet.
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# It is used even when my_use_clang_lld is true,
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# because some objcopy flags are not supported by llvm-objcopy yet.
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$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
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$(strip_output): PRIVATE_NM := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_NM)
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$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
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ifeq ($(my_strip_module),no_debuglink)
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$(strip_output): PRIVATE_NO_DEBUGLINK := true
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else
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$(strip_output): PRIVATE_NO_DEBUGLINK :=
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endif
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ifeq ($(my_strip_module),mini-debug-info)
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# Strip the binary, but keep debug frames and symbol table in a compressed .gnu_debugdata section.
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$(strip_output): $(strip_input) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_NM) $(XZ)
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$(transform-to-stripped-keep-mini-debug-info)
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else ifneq ($(filter true no_debuglink,$(my_strip_module)),)
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# Strip the binary
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$(strip_output): $(strip_input) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
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$(transform-to-stripped)
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else ifeq ($(my_strip_module),keep_symbols)
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# Strip only the debug frames, but leave the symbol table.
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$(strip_output): $(strip_input) $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
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$(transform-to-stripped-keep-symbols)
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# A product may be configured to strip everything in some build variants.
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# We do the stripping as a post-install command so that LOCAL_BUILT_MODULE
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# is still with the symbols and we don't need to clean it (and relink) when
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# you switch build variant.
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ifneq ($(filter $(STRIP_EVERYTHING_BUILD_VARIANTS),$(TARGET_BUILD_VARIANT)),)
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$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := \
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$($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) --strip-all $(LOCAL_INSTALLED_MODULE)
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endif
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else
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# Don't strip the binary, just copy it. We can't skip this step
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# because a copy of the binary must appear at LOCAL_BUILT_MODULE.
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$(strip_output): $(strip_input)
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@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
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$(copy-file-to-target)
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endif # my_strip_module
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$(cleantarget): PRIVATE_CLEAN_FILES += \
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$(linked_module) \
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$(breakpad_output) \
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$(symbolic_output) \
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$(strip_output)
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