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标题: Android系统镜像文件的打包|过程分析(2) [打印本页]

作者: liuwei 时间: 2016-9-28 13:13
标题: Android系统镜像文件的打包|过程分析(2)

注意，ALL_DEFAULT_INSTALLED_MODULES描述的文件除了在build/core/main.mk文件中定义的模块文件之外，还包含以下这些文件：

1. 通过PRODUCT_COPY_FILES定义的要拷贝到目标设备上去的文件

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unique_product_copy_files_pairs :=
$(foreach cf,$(PRODUCT_COPY_FILES), \
$(if $(filter $(unique_product_copy_files_pairs),$(cf)),,\
$(eval unique_product_copy_files_pairs += $(cf))))
unique_product_copy_files_destinati** :=
$(foreach cf,$(unique_product_copy_files_pairs), \
$(eval _src := $(call word-colon,1,$(cf))) \
$(eval _dest := $(call word-colon,2,$(cf))) \
$(call check-product-copy-files,$(cf)) \
$(if $(filter $(unique_product_copy_files_destinati**),$(_dest)), \
$(info PRODUCT_COPY_FILES $(cf) ignored.), \
$(eval _fulldest := $(call append-path,$(PRODUCT_OUT),$(_dest))) \
$(if $(filter %.xml,$(_dest)),\
$(eval $(call copy-xml-file-checked,$(_src),$(_fulldest))),\
$(eval $(call copy-one-file,$(_src),$(_fulldest)))) \
$(eval ALL_DEFAULT_INSTALLED_MODULES += $(_fulldest)) \
$(eval unique_product_copy_files_destinati** += $(_dest))))

2. 由ADDITIONAL_DEFAULT_PROPERTIES定义的属性所组成的default.prop文件

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INSTALLED_DEFAULT_PROP_TARGET := $(TARGET_ROOT_OUT)/default.prop
ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_DEFAULT_PROP_TARGET)
ADDITIONAL_DEFAULT_PROPERTIES := \
$(call collapse-pairs, $(ADDITIONAL_DEFAULT_PROPERTIES))
ADDITIONAL_DEFAULT_PROPERTIES += \
$(call collapse-pairs, $(PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
ADDITIONAL_DEFAULT_PROPERTIES := $(call uniq-pairs-by-first-component, \
$(ADDITIONAL_DEFAULT_PROPERTIES),=)
$(INSTALLED_DEFAULT_PROP_TARGET):
@echo Target buildinfo: $@
@mkdir -p $(dir $@)
$(hide) echo "#" > $@; \
echo "# ADDITIONAL_DEFAULT_PROPERTIES" >> $@; \
echo "#" >> $@;
$(hide) $(foreach line,$(ADDITIONAL_DEFAULT_PROPERTIES), \
echo "$(line)" >> $@;)
build/tools/post_process_props.py $@

3. 由ADDITIONAL_BUILD_PROPERTIES等定义的属性所组成的build.prop文件

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INSTALLED_BUILD_PROP_TARGET := $(TARGET_OUT)/build.prop
ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_BUILD_PROP_TARGET)
ADDITIONAL_BUILD_PROPERTIES := \
$(call collapse-pairs, $(ADDITIONAL_BUILD_PROPERTIES))
ADDITIONAL_BUILD_PROPERTIES := $(call uniq-pairs-by-first-component, \
$(ADDITIONAL_BUILD_PROPERTIES),=)
......
BUILDINFO_SH := build/tools/buildinfo.sh
$(INSTALLED_BUILD_PROP_TARGET): $(BUILDINFO_SH) $(INTERNAL_BUILD_ID_MAKEFILE) $(BUILD_SYSTEM)/version_defaults.mk $(wildcard $(TARGET_DEVICE_DIR)/system.prop)
@echo Target buildinfo: $@
@mkdir -p $(dir $@)
$(hide) TARGET_BUILD_TYPE="$(TARGET_BUILD_VARIANT)" \
TARGET_DEVICE="$(TARGET_DEVICE)" \
PRODUCT_NAME="$(TARGET_PRODUCT)" \
PRODUCT_BRAND="$(PRODUCT_BRAND)" \
PRODUCT_DEFAULT_LANGUAGE="$(call default-locale-language,$(PRODUCT_LOCALES))" \
PRODUCT_DEFAULT_REGION="$(call default-locale-region,$(PRODUCT_LOCALES))" \
PRODUCT_DEFAULT_WIFI_CHANNELS="$(PRODUCT_DEFAULT_WIFI_CHANNELS)" \
PRODUCT_MODEL="$(PRODUCT_MODEL)" \
PRODUCT_MANUFACTURER="$(PRODUCT_MANUFACTURER)" \
PRIVATE_BUILD_DESC="$(PRIVATE_BUILD_DESC)" \
BUILD_ID="$(BUILD_ID)" \
BUILD_DISPLAY_ID="$(BUILD_DISPLAY_ID)" \
BUILD_NUMBER="$(BUILD_NUMBER)" \
PLATFORM_VERSION="$(PLATFORM_VERSION)" \
PLATFORM_SDK_VERSION="$(PLATFORM_SDK_VERSION)" \
PLATFORM_VERSION_CODENAME="$(PLATFORM_VERSION_CODENAME)" \
BUILD_VERSION_TAGS="$(BUILD_VERSION_TAGS)" \
TARGET_BOOTLOADER_BOARD_NAME="$(TARGET_BOOTLOADER_BOARD_NAME)" \
BUILD_FINGERPRINT="$(BUILD_FINGERPRINT)" \
TARGET_BOARD_PLATFORM="$(TARGET_BOARD_PLATFORM)" \
TARGET_CPU_ABI="$(TARGET_CPU_ABI)" \
TARGET_CPU_ABI2="$(TARGET_CPU_ABI2)" \
TARGET_AAPT_CHARACTERISTICS="$(TARGET_AAPT_CHARACTERISTICS)" \
bash $(BUILDINFO_SH) > $@
$(hide) if [ -f $(TARGET_DEVICE_DIR)/system.prop ]; then \
cat $(TARGET_DEVICE_DIR)/system.prop >> $@; \
fi
$(if $(ADDITIONAL_BUILD_PROPERTIES), \
$(hide) echo >> $@; \
echo "#" >> $@; \
echo "# ADDITIONAL_BUILD_PROPERTIES" >> $@; \
echo "#" >> $@; )
$(hide) $(foreach line,$(ADDITIONAL_BUILD_PROPERTIES), \
echo "$(line)" >> $@;)
$(hide) build/tools/post_process_props.py $@

4. 用来描述event类型日志格式的event-log-tags文件

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all_event_log_tags_file := $(TARGET_OUT_COMMON_INTERMEDIATES)/all-event-log-tags.txt
event_log_tags_file := $(TARGET_OUT)/etc/event-log-tags
# Include tags from all packages that we know about
all_event_log_tags_src := \
$(sort $(foreach m, $(ALL_MODULES), $(ALL_MODULES.$(m).EVENT_LOG_TAGS)))
# PDK builds will already have a full list of tags that needs to get merged
# in with the ones from source
pdk_fusion_log_tags_file := $(patsubst $(PRODUCT_OUT)/%,$(_pdk_fusion_intermediates)/%,$(filter $(event_log_tags_file),$(ALL_PDK_FUSION_FILES)))
$(all_event_log_tags_file): PRIVATE_SRC_FILES := $(all_event_log_tags_src) $(pdk_fusion_log_tags_file)
$(hide) mkdir -p $(dir $@)
$(hide) build/tools/merge-event-log-tags.py -o $@ $(PRIVATE_SRC_FILES)
# Include tags from all packages included in this product, plus all
# tags that are part of the system (ie, not in a vendor/ or device/
# directory).
event_log_tags_src := \
$(sort $(foreach m,\
$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_PACKAGES) \
$(call module-names-for-tag-list,user), \
$(ALL_MODULES.$(m).EVENT_LOG_TAGS)) \
$(filter-out vendor/% device/% out/%,$(all_event_log_tags_src)))
$(event_log_tags_file): PRIVATE_SRC_FILES := $(event_log_tags_src) $(pdk_fusion_log_tags_file)
$(event_log_tags_file): PRIVATE_MERGED_FILE := $(all_event_log_tags_file)
$(event_log_tags_file): $(event_log_tags_src) $(all_event_log_tags_file) $(pdk_fusion_log_tags_file)
$(hide) mkdir -p $(dir $@)
$(hide) build/tools/merge-event-log-tags.py -o $@ -m $(PRIVATE_MERGED_FILE) $(PRIVATE_SRC_FILES)
event-log-tags: $(event_log_tags_file)
ALL_DEFAULT_INSTALLED_MODULES += $(event_log_tags_file)

关于Android系统的event日志，可以参考Android日志系统驱动程序Logger源代码分析、Android应用程序框架层和系统运行库层日志系统源代码分析和Android日志系统Logcat源代码简要分析这个系列的文章。

5. 由于使用了BSD、GPL和Apache许可的模块而必须在发布时附带的Notice文件

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target_notice_file_txt := $(TARGET_OUT_INTERMEDIATES)/NOTICE.txt
target_notice_file_html := $(TARGET_OUT_INTERMEDIATES)/NOTICE.html
target_notice_file_html_gz := $(TARGET_OUT_INTERMEDIATES)/NOTICE.html.gz
tools_notice_file_txt := $(HOST_OUT_INTERMEDIATES)/NOTICE.txt
tools_notice_file_html := $(HOST_OUT_INTERMEDIATES)/NOTICE.html
kernel_notice_file := $(TARGET_OUT_NOTICE_FILES)/src/kernel.txt
pdk_fusion_notice_files := $(filter $(TARGET_OUT_NOTICE_FILES)/%, $(ALL_PDK_FUSION_FILES))
......
# Install the html file at /system/etc/NOTICE.html.gz.
# This is not ideal, but this is very late in the game, after a lot of
# the module processing has already been done -- in fact, we used the
# fact that all that has been done to get the list of modules that we
# need notice files for.
$(target_notice_file_html_gz): $(target_notice_file_html) | $(MINIGZIP)
$(hide) $(MINIGZIP) -9 < $< > $@
installed_notice_html_gz := $(TARGET_OUT)/etc/NOTICE.html.gz
$(installed_notice_html_gz): $(target_notice_file_html_gz) | $(ACP)
$(copy-file-to-target)
# if we've been run my mm, mmm, etc, don't reinstall this every time
ifeq ($(ONE_SHOT_MAKEFILE),)
ALL_DEFAULT_INSTALLED_MODULES += $(installed_notice_html_gz)
endif

6. 用来验证OTA更新的ZS文件

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ALL_DEFAULT_INSTALLED_MODULES += $(TARGET_OUT_ETC)/security/otacerts.zip
$(TARGET_OUT_ETC)/security/otacerts.zip: KEY_CERT_PAIR := $(DEFAULT_KEY_CERT_PAIR)
$(TARGET_OUT_ETC)/security/otacerts.zip: $(addsuffix .x509.pem,$(DEFAULT_KEY_CERT_PAIR))
$(hide) rm -f $@
$(hide) mkdir -p $(dir $@)
$(hide) zip -qj $@ $<
.PHONY: otacerts
otacerts: $(TARGET_OUT_ETC)/security/otacerts.zip

作者: liuwei 时间: 2016-9-28 14:10

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