1########################################################### 2## Standard rules for building any target-side binaries 3## with dynamic linkage (dynamic libraries or executables 4## that link with dynamic libraries) 5## 6## Files including this file must define a rule to build 7## the target $(linked_module). 8########################################################### 9 10# This constraint means that we can hard-code any $(TARGET_*) variables. 11ifdef LOCAL_IS_HOST_MODULE 12$(error This file should not be used to build host binaries. Included by (or near) $(lastword $(filter-out config/%,$(MAKEFILE_LIST)))) 13endif 14 15# The name of the target file, without any path prepended. 16# This duplicates logic from base_rules.mk because we need to 17# know its results before base_rules.mk is included. 18include $(BUILD_SYSTEM)/configure_module_stem.mk 19 20# base_rules.make defines $(intermediates), but we need its value 21# before we include base_rules. Make a guess, and verify that 22# it's correct once the real value is defined. 23guessed_intermediates := $(call local-intermediates-dir,,$(LOCAL_2ND_ARCH_VAR_PREFIX)) 24 25# Define the target that is the unmodified output of the linker. 26# The basename of this target must be the same as the final output 27# binary name, because it's used to set the "soname" in the binary. 28# The includer of this file will define a rule to build this target. 29linked_module := $(guessed_intermediates)/LINKED/$(my_built_module_stem) 30 31ALL_ORIGINAL_DYNAMIC_BINARIES += $(linked_module) 32 33# Because TARGET_SYMBOL_FILTER_FILE depends on ALL_ORIGINAL_DYNAMIC_BINARIES, 34# the linked_module rules won't necessarily inherit the PRIVATE_ 35# variables from LOCAL_BUILT_MODULE. This tells binary.make to explicitly 36# define the PRIVATE_ variables for linked_module as well as for 37# LOCAL_BUILT_MODULE. 38LOCAL_INTERMEDIATE_TARGETS := $(linked_module) 39 40################################### 41include $(BUILD_SYSTEM)/binary.mk 42################################### 43 44# Make sure that our guess at the value of intermediates was correct. 45ifneq ($(intermediates),$(guessed_intermediates)) 46$(error Internal error: guessed path '$(guessed_intermediates)' doesn't match '$(intermediates)) 47endif 48 49########################################################### 50## Compress 51########################################################### 52compress_input := $(linked_module) 53 54ifeq ($(strip $(LOCAL_COMPRESS_MODULE_SYMBOLS)),) 55 LOCAL_COMPRESS_MODULE_SYMBOLS := $(strip $(TARGET_COMPRESS_MODULE_SYMBOLS)) 56endif 57 58ifeq ($(LOCAL_COMPRESS_MODULE_SYMBOLS),true) 59$(error Symbol compression not yet supported.) 60compress_output := $(intermediates)/COMPRESSED-$(my_built_module_stem) 61 62#TODO: write the real $(STRIPPER) rule. 63#TODO: define a rule to build TARGET_SYMBOL_FILTER_FILE, and 64# make it depend on ALL_ORIGINAL_DYNAMIC_BINARIES. 65$(compress_output): $(compress_input) $(TARGET_SYMBOL_FILTER_FILE) | $(ACP) 66 @echo "target Compress Symbols: $(PRIVATE_MODULE) ($@)" 67 $(copy-file-to-target) 68else 69# Skip this step. 70compress_output := $(compress_input) 71endif 72 73########################################################### 74## Store a copy with symbols for symbolic debugging 75########################################################### 76ifeq ($(LOCAL_UNSTRIPPED_PATH),) 77my_unstripped_path := $(TARGET_OUT_UNSTRIPPED)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path)) 78else 79my_unstripped_path := $(LOCAL_UNSTRIPPED_PATH) 80endif 81symbolic_input := $(compress_output) 82symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem) 83$(symbolic_output) : $(symbolic_input) | $(ACP) 84 @echo "target Symbolic: $(PRIVATE_MODULE) ($@)" 85 $(copy-file-to-target) 86 87 88########################################################### 89## Strip 90########################################################### 91strip_input := $(symbolic_output) 92strip_output := $(LOCAL_BUILT_MODULE) 93 94my_strip_module := $(LOCAL_STRIP_MODULE) 95ifeq ($(my_strip_module),) 96 my_strip_module := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP_MODULE) 97endif 98 99ifeq ($(my_strip_module),true) 100# Strip the binary 101$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) 102$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY) 103$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) 104 $(transform-to-stripped) 105else 106ifeq ($(my_strip_module),keep_symbols) 107# Strip only the debug frames, but leave the symbol table. 108$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) 109$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY) 110$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF) 111$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) 112 $(transform-to-stripped-keep-symbols) 113 114# A product may be configured to strip everything in some build variants. 115# We do the stripping as a post-install command so that LOCAL_BUILT_MODULE 116# is still with the symbols and we don't need to clean it (and relink) when 117# you switch build variant. 118ifneq ($(filter $(STRIP_EVERYTHING_BUILD_VARIANTS),$(TARGET_BUILD_VARIANT)),) 119$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := \ 120 $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) --strip-all $(LOCAL_INSTALLED_MODULE) 121endif 122else 123# Don't strip the binary, just copy it. We can't skip this step 124# because a copy of the binary must appear at LOCAL_BUILT_MODULE. 125# 126# If the binary we're copying is acp or a prerequisite, 127# use cp(1) instead. 128ifneq ($(LOCAL_ACP_UNAVAILABLE),true) 129$(strip_output): $(strip_input) | $(ACP) 130 @echo "target Unstripped: $(PRIVATE_MODULE) ($@)" 131 $(copy-file-to-target) 132else 133$(strip_output): $(strip_input) 134 @echo "target Unstripped: $(PRIVATE_MODULE) ($@)" 135 $(copy-file-to-target-with-cp) 136endif 137endif 138endif # my_strip_module 139 140 141$(cleantarget): PRIVATE_CLEAN_FILES += \ 142 $(linked_module) \ 143 $(symbolic_output) \ 144 $(compress_output) 145