dynamic_binary.mk revision c1729f3602fe12f05325bd97d7f74934b5d012db 
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## Compress
43###########################################################
44compress_input := $(linked_module)
45
46ifeq ($(strip $(LOCAL_COMPRESS_MODULE_SYMBOLS)),)
47  LOCAL_COMPRESS_MODULE_SYMBOLS := $(strip $(TARGET_COMPRESS_MODULE_SYMBOLS))
48endif
49
50ifeq ($(LOCAL_COMPRESS_MODULE_SYMBOLS),true)
51$(error Symbol compression not yet supported.)
52compress_output := $(intermediates)/COMPRESSED-$(my_built_module_stem)
53
54#TODO: write the real $(STRIPPER) rule.
55#TODO: define a rule to build TARGET_SYMBOL_FILTER_FILE, and
56#      make it depend on ALL_ORIGINAL_DYNAMIC_BINARIES.
57$(compress_output): $(compress_input) $(TARGET_SYMBOL_FILTER_FILE) | $(ACP)
58	@echo "target Compress Symbols: $(PRIVATE_MODULE) ($@)"
59	$(copy-file-to-target)
60else
61# Skip this step.
62compress_output := $(compress_input)
63endif
64
65###########################################################
66## Store a copy with symbols for symbolic debugging
67###########################################################
68ifeq ($(LOCAL_UNSTRIPPED_PATH),)
69my_unstripped_path := $(TARGET_OUT_UNSTRIPPED)/$(patsubst $(PRODUCT_OUT)/%,%,$(my_module_path))
70else
71my_unstripped_path := $(LOCAL_UNSTRIPPED_PATH)
72endif
73symbolic_input := $(compress_output)
74symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
75$(symbolic_output) : $(symbolic_input) | $(ACP)
76	@echo "target Symbolic: $(PRIVATE_MODULE) ($@)"
77	$(copy-file-to-target)
78
79
80###########################################################
81## Strip
82###########################################################
83strip_input := $(symbolic_output)
84strip_output := $(LOCAL_BUILT_MODULE)
85
86my_strip_module := $(LOCAL_STRIP_MODULE)
87ifeq ($(my_strip_module),)
88  my_strip_module := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP_MODULE)
89endif
90
91$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
92$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
93$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
94ifeq ($(my_strip_module),no_debuglink)
95$(strip_output): PRIVATE_NO_DEBUGLINK := true
96else
97$(strip_output): PRIVATE_NO_DEBUGLINK :=
98endif
99
100ifneq ($(filter true no_debuglink,$(my_strip_module)),)
101# Strip the binary
102$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
103	$(transform-to-stripped)
104else ifeq ($(my_strip_module),keep_symbols)
105# Strip only the debug frames, but leave the symbol table.
106$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
107	$(transform-to-stripped-keep-symbols)
108
109# A product may be configured to strip everything in some build variants.
110# We do the stripping as a post-install command so that LOCAL_BUILT_MODULE
111# is still with the symbols and we don't need to clean it (and relink) when
112# you switch build variant.
113ifneq ($(filter $(STRIP_EVERYTHING_BUILD_VARIANTS),$(TARGET_BUILD_VARIANT)),)
114$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := \
115  $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP) --strip-all $(LOCAL_INSTALLED_MODULE)
116endif
117else
118# Don't strip the binary, just copy it.  We can't skip this step
119# because a copy of the binary must appear at LOCAL_BUILT_MODULE.
120#
121# If the binary we're copying is acp or a prerequisite,
122# use cp(1) instead.
123ifneq ($(LOCAL_ACP_UNAVAILABLE),true)
124$(strip_output): $(strip_input) | $(ACP)
125	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
126	$(copy-file-to-target)
127else
128$(strip_output): $(strip_input)
129	@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
130	$(copy-file-to-target-with-cp)
131endif
132endif # my_strip_module
133
134
135$(cleantarget): PRIVATE_CLEAN_FILES += \
136    $(linked_module) \
137    $(symbolic_output) \
138    $(compress_output)
139