dynamic_binary.mk revision b6eb8ddbde11de0bc59cfedf7adb91a83c27d279 
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 := $(firstword \
50      $(LOCAL_PACK_MODULE_RELOCATIONS_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) \
51      $(LOCAL_PACK_MODULE_RELOCATIONS))
52endif
53
54ifeq ($(my_pack_module_relocations),)
55  my_pack_module_relocations := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_PACK_MODULE_RELOCATIONS)
56endif
57
58# Do not pack relocations for executables. Because packing results in
59# non-zero p_vaddr which causes kernel to load executables to lower
60# address (starting at 0x8000) http://b/20665974
61ifeq ($(LOCAL_MODULE_CLASS),EXECUTABLES)
62  my_pack_module_relocations := false
63endif
64
65# TODO (dimitry): Relocation packer is not yet available for darwin
66ifneq ($(HOST_OS),linux)
67  my_pack_module_relocations := false
68endif
69
70ifeq (true,$(my_pack_module_relocations))
71# Pack relocations
72$(relocation_packer_output): $(relocation_packer_input) | $(ACP)
73	$(pack-elf-relocations)
74else
75$(relocation_packer_output): $(relocation_packer_input) | $(ACP)
76	@echo "target Unpacked: $(PRIVATE_MODULE) ($@)"
77	$(copy-file-to-target)
78endif
79
80###########################################################
81## Store a copy with symbols for symbolic debugging
82###########################################################
83ifeq ($(LOCAL_UNSTRIPPED_PATH),)
84my_unstripped_path := $(TARGET_OUT_UNSTRIPPED)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
85else
86my_unstripped_path := $(LOCAL_UNSTRIPPED_PATH)
87endif
88symbolic_input := $(relocation_packer_output)
89symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
90$(symbolic_output) : $(symbolic_input) | $(ACP)
91	@echo "target Symbolic: $(PRIVATE_MODULE) ($@)"
92	$(copy-file-to-target)
93
94###########################################################
95## Store breakpad symbols
96###########################################################
97
98ifeq ($(BREAKPAD_GENERATE_SYMBOLS),true)
99my_breakpad_path := $(TARGET_OUT_BREAKPAD)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
100breakpad_input := $(relocation_packer_output)
101breakpad_output := $(my_breakpad_path)/$(my_installed_module_stem).sym
102$(breakpad_output) : $(breakpad_input) | $(BREAKPAD_DUMP_SYMS)
103	@echo "target breakpad: $(PRIVATE_MODULE) ($@)"
104	@mkdir -p $(dir $@)
105	$(hide) $(BREAKPAD_DUMP_SYMS) -c $< > $@
106$(LOCAL_BUILT_MODULE) : $(breakpad_output)
107endif
108
109###########################################################
110## Strip
111###########################################################
112strip_input := $(symbolic_output)
113strip_output := $(LOCAL_BUILT_MODULE)
114
115my_strip_module := $(firstword \
116  $(LOCAL_STRIP_MODULE_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)) \
117  $(LOCAL_STRIP_MODULE))
118ifeq ($(my_strip_module),)
119  my_strip_module := true
120endif
121
122$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
123$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
124$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
125ifeq ($(my_strip_module),no_debuglink)
126$(strip_output): PRIVATE_NO_DEBUGLINK := true
127else
128$(strip_output): PRIVATE_NO_DEBUGLINK :=
129endif
130
131ifneq ($(filter true no_debuglink,$(my_strip_module)),)
132# Strip the binary
133$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
134	$(transform-to-stripped)
135else ifeq ($(my_strip_module),keep_symbols)
136# Strip only the debug frames, but leave the symbol table.
137$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
138	$(transform-to-stripped-keep-symbols)
139
140# A product may be configured to strip everything in some build variants.
141# We do the stripping as a post-install command so that LOCAL_BUILT_MODULE
142# is still with the symbols and we don't need to clean it (and relink) when
143# you switch build variant.
144ifneq ($(filter $(STRIP_EVERYTHING_BUILD_VARIANTS),$(TARGET_BUILD_VARIANT)),)
145$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := \
146  $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) --strip-all $(LOCAL_INSTALLED_MODULE)
147endif
148else
149# Don't strip the binary, just copy it.  We can't skip this step
150# because a copy of the binary must appear at LOCAL_BUILT_MODULE.
151#
152# If the binary we're copying is acp or a prerequisite,
153# use cp(1) instead.
154ifneq ($(LOCAL_ACP_UNAVAILABLE),true)
155$(strip_output): $(strip_input) | $(ACP)
156	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
157	$(copy-file-to-target)
158else
159$(strip_output): $(strip_input)
160	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
161	$(copy-file-to-target-with-cp)
162endif
163endif # my_strip_module
164
165$(cleantarget): PRIVATE_CLEAN_FILES += \
166    $(linked_module) \
167    $(breakpad_output) \
168    $(symbolic_output) \
169    $(strip_output)
170