dynamic_binary.mk revision 52831d118c7c1b449b6d919dd87e55c423c6bca6 
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
20intermediates := $(call local-intermediates-dir,,$(LOCAL_2ND_ARCH_VAR_PREFIX))
21
22# Define the target that is the unmodified output of the linker.
23# The basename of this target must be the same as the final output
24# binary name, because it's used to set the "soname" in the binary.
25# The includer of this file will define a rule to build this target.
26linked_module := $(intermediates)/LINKED/$(my_built_module_stem)
27
28ALL_ORIGINAL_DYNAMIC_BINARIES += $(linked_module)
29
30# Because TARGET_SYMBOL_FILTER_FILE depends on ALL_ORIGINAL_DYNAMIC_BINARIES,
31# the linked_module rules won't necessarily inherit the PRIVATE_
32# variables from LOCAL_BUILT_MODULE.  This tells binary.make to explicitly
33# define the PRIVATE_ variables for linked_module as well as for
34# LOCAL_BUILT_MODULE.
35LOCAL_INTERMEDIATE_TARGETS := $(linked_module)
36
37###################################
38include $(BUILD_SYSTEM)/binary.mk
39###################################
40
41###########################################################
42## Pack relocation tables
43###########################################################
44relocation_packer_input := $(linked_module)
45relocation_packer_output := $(intermediates)/PACKED/$(my_built_module_stem)
46
47my_pack_module_relocations := false
48ifneq ($(DISABLE_RELOCATION_PACKER),true)
49    my_pack_module_relocations := $(LOCAL_PACK_MODULE_RELOCATIONS)
50endif
51
52ifeq ($(my_pack_module_relocations),)
53  my_pack_module_relocations := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_PACK_MODULE_RELOCATIONS)
54endif
55
56# Do not pack relocations for executables. Because packing results in
57# non-zero p_vaddr which causes kernel to load executables to lower
58# address (starting at 0x8000) http://b/20665974
59ifeq ($(LOCAL_MODULE_CLASS),EXECUTABLES)
60  my_pack_module_relocations := false
61endif
62
63# TODO (dimitry): Relocation packer is not yet available for darwin
64ifneq ($(HOST_OS),linux)
65  my_pack_module_relocations := false
66endif
67
68ifeq (true,$(my_pack_module_relocations))
69# Pack relocations
70$(relocation_packer_output): $(relocation_packer_input) | $(ACP)
71	$(pack-elf-relocations)
72else
73$(relocation_packer_output): $(relocation_packer_input) | $(ACP)
74	@echo "target Unpacked: $(PRIVATE_MODULE) ($@)"
75	$(copy-file-to-target)
76endif
77
78###########################################################
79## Store a copy with symbols for symbolic debugging
80###########################################################
81ifeq ($(LOCAL_UNSTRIPPED_PATH),)
82my_unstripped_path := $(TARGET_OUT_UNSTRIPPED)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
83else
84my_unstripped_path := $(LOCAL_UNSTRIPPED_PATH)
85endif
86symbolic_input := $(relocation_packer_output)
87symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
88$(symbolic_output) : $(symbolic_input) | $(ACP)
89	@echo "target Symbolic: $(PRIVATE_MODULE) ($@)"
90	$(copy-file-to-target)
91
92###########################################################
93## Store breakpad symbols
94###########################################################
95
96ifeq ($(BREAKPAD_GENERATE_SYMBOLS),true)
97my_breakpad_path := $(TARGET_OUT_BREAKPAD)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
98breakpad_input := $(relocation_packer_output)
99breakpad_output := $(my_breakpad_path)/$(my_installed_module_stem).sym
100$(breakpad_output) : $(breakpad_input) | $(BREAKPAD_DUMP_SYMS)
101	@echo "target breakpad: $(PRIVATE_MODULE) ($@)"
102	@mkdir -p $(dir $@)
103	$(hide) $(BREAKPAD_DUMP_SYMS) -c $< > $@
104$(LOCAL_BUILT_MODULE) : $(breakpad_output)
105endif
106
107###########################################################
108## Strip
109###########################################################
110strip_input := $(symbolic_output)
111strip_output := $(LOCAL_BUILT_MODULE)
112
113my_strip_module := $(LOCAL_STRIP_MODULE)
114ifeq ($(my_strip_module),)
115  my_strip_module := true
116endif
117
118$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
119$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
120$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
121ifeq ($(my_strip_module),no_debuglink)
122$(strip_output): PRIVATE_NO_DEBUGLINK := true
123else
124$(strip_output): PRIVATE_NO_DEBUGLINK :=
125endif
126
127ifneq ($(filter true no_debuglink,$(my_strip_module)),)
128# Strip the binary
129$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
130	$(transform-to-stripped)
131else ifeq ($(my_strip_module),keep_symbols)
132# Strip only the debug frames, but leave the symbol table.
133$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
134	$(transform-to-stripped-keep-symbols)
135
136# A product may be configured to strip everything in some build variants.
137# We do the stripping as a post-install command so that LOCAL_BUILT_MODULE
138# is still with the symbols and we don't need to clean it (and relink) when
139# you switch build variant.
140ifneq ($(filter $(STRIP_EVERYTHING_BUILD_VARIANTS),$(TARGET_BUILD_VARIANT)),)
141$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := \
142  $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) --strip-all $(LOCAL_INSTALLED_MODULE)
143endif
144else
145# Don't strip the binary, just copy it.  We can't skip this step
146# because a copy of the binary must appear at LOCAL_BUILT_MODULE.
147#
148# If the binary we're copying is acp or a prerequisite,
149# use cp(1) instead.
150ifneq ($(LOCAL_ACP_UNAVAILABLE),true)
151$(strip_output): $(strip_input) | $(ACP)
152	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
153	$(copy-file-to-target)
154else
155$(strip_output): $(strip_input)
156	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
157	$(copy-file-to-target-with-cp)
158endif
159endif # my_strip_module
160
161$(cleantarget): PRIVATE_CLEAN_FILES += \
162    $(linked_module) \
163    $(breakpad_output) \
164    $(symbolic_output) \
165    $(strip_output)
166