#平台
CPU: RK3288
OS: android 5.11
#需求
新增xxx.jar 并在系统启动后自动加载到启动环境中, 等级等同于framework.jar,参考 BOOTCLASSPATH 变量的设置:
cat /init.environ.rc
export BOOTCLASSPATH /system/my/path/my.jar:/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/apache-xml.jar
其中**/system/my/path/my.jar**为新增加的jar.
#实现思路
新增模块名为: my
###让系统能编译新增加的JAR
这部分较为简单:
git diff build/target/product/base.mk diff --git a/build/target/product/base.mk b/build/target/product/base.mk old mode 100644 new mode 100755 index 14200f2..67eeae7 --- a/build/target/product/base.mk +++ b/build/target/product/base.mk @@ -21,6 +21,7 @@ PRODUCT_PACKAGES += \ appwidget \ appops \ am \ + my \ android.policy \ android.test.runner \ app_process \
###使用JAR包输出到指定目录
git diff frameworks/base/Android.mk diff --git a/frameworks/base/Android.mk b/frameworks/base/Android.mk index 5105ad5..e8a60b0 100755 --- a/frameworks/base/Android.mk +++ b/frameworks/base/Android.mk @@ -1055,6 +1055,19 @@ LOCAL_DX_FLAGS := --core-library include $(BUILD_JAVA_LIBRARY) + +java_dirs := java/my +include $(CLEAR_VARS) +LOCAL_MODULE_TAGS := optional +LOCAL_NO_STANDARD_LIBRARIES := true +LOCAL_JAVA_LIBRARIES := framework +LOCAL_SRC_FILES := $(call all-java-files-under, $(java_dirs)) +LOCAL_MODULE := my +LOCAL_DX_FLAGS := --core-library +LOCAL_OUT_DIR :=/system/my/path +include $(BUILD_JAVA_LIBRARY) # Include subdirectory makefiles # ============================================================
上面的步骤中, 添加了一个自定义的编译变量: LOCAL_OUT_DIR用于声明指定输出的目录
git diff build/core/base_rules.mk diff --git a/build/core/base_rules.mk b/build/core/base_rules.mk old mode 100644 new mode 100755 index 8c25897..7d8750a --- a/build/core/base_rules.mk +++ b/build/core/base_rules.mk @@ -136,7 +136,6 @@ ifneq ($(my_module_relative_path),) my_module_path := $(my_module_path)/$(my_module_relative_path) endif endif # not LOCAL_UNINSTALLABLE_MODULE ifneq ($(strip $(LOCAL_BUILT_MODULE)$(LOCAL_INSTALLED_MODULE)),) $(error $(LOCAL_PATH): LOCAL_BUILT_MODULE and LOCAL_INSTALLED_MODULE must not be defined by component makefiles) endif @@ -186,12 +185,14 @@ ifneq (true,$(LOCAL_UNINSTALLABLE_MODULE)) endif endif LOCAL_INSTALLED_MODULE := $(my_module_path)/$(my_installed_module_stem) +#AnsonCode LOCAL_OUT_DIR to make file output to special dir + ifdef LOCAL_OUT_DIR + LOCAL_INSTALLED_MODULE := $(PRODUCT_OUT)/$(LOCAL_OUT_DIR)/$(my_installed_module_stem) + endif endif # Assemble the list of targets to create PRIVATE_ variables for. LOCAL_INTERMEDIATE_TARGETS += $(LOCAL_BUILT_MODULE)
以上修改后, JAR包将会输出到system/my/path/my.jar
最好清空变量:
diff --git a/build/core/clear_vars.mk b/build/core/clear_vars.mk old mode 100644 new mode 100755 index 52bca70..c4bfc52 --- a/build/core/clear_vars.mk +++ b/build/core/clear_vars.mk @@ -250,6 +250,7 @@ LOCAL_MODULE_STEM_32:= LOCAL_MODULE_STEM_64:= LOCAL_CLANG_32:= LOCAL_CLANG_64:= +LOCAL_OUT_DIR:= # Trim MAKEFILE_LIST so that $(call my-dir) doesn't need to # iterate over thousands of entries every time.
###将JAR包添加到BOOTCLASSPATH变量中.
若默认输出到/system/framework 可以增加定义到以下变量:
生成BOOTCLASSPATH的源码在:
build/core/dex_preopt.mk 中的 PRODUCT_BOOTCLASSPATH
fneq ($(DALVIK_VM_LIB),) # list of boot classpath jars for dexpreopt DEXPREOPT_BOOT_JARS := $(subst $(space),:,$(PRODUCT_BOOT_JARS)) DEXPREOPT_BOOT_JARS_MODULES := $(PRODUCT_BOOT_JARS) PRODUCT_BOOTCLASSPATH := $(subst $(space),:,$(foreach m,$(DEXPREOPT_BOOT_JARS_MODULES),/system/framework/$(m).jar))
PRODUCT_BOOT_JARS 的定义在以下两个文件.
build/target/product/core_tiny.mk
build/target/product/core_minimal.mk
# The order matters PRODUCT_BOOT_JARS := \ core-libart \ conscrypt \ okhttp \ core-junit \ bouncycastle \ ext \ framework \ + my \ telephony-common \ voip-common \ ims-common \ mms-common \ android.policy \ apache-xml \ nullwebview \
即是说, 若需要像framework.jar一样加到BOOTCLASSPATH, 只需像上面代码, 加入my即可.
这样加出来的结果会是:
export BOOTCLASSPATH /system/framework/my.jar:/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/apache-xml.jar
PS:以下为非标准做法, 请小心使用
diff --git a/build/core/dex_preopt.mk b/build/core/dex_preopt.mk old mode 100644 new mode 100755 index 8a19b66..cc72e68 --- a/build/core/dex_preopt.mk +++ b/build/core/dex_preopt.mk @@ -8,7 +8,14 @@ ifneq ($(DALVIK_VM_LIB),) # list of boot classpath jars for dexpreopt DEXPREOPT_BOOT_JARS := $(subst $(space),:,$(PRODUCT_BOOT_JARS)) DEXPREOPT_BOOT_JARS_MODULES := $(PRODUCT_BOOT_JARS) -PRODUCT_BOOTCLASSPATH := $(subst $(space),:,$(foreach m,$(DEXPREOPT_BOOT_JARS_MODULES),/system/framework/$(m).jar)) +PRODUCT_BOOTCLASSPATH := /system/my/path/my.jar:$(subst $(space),:,$(foreach m,$(DEXPREOPT_BOOT_JARS_MODULES),/system/framework/$(m).jar)) + +DEXPREOPT_BOOT_JARS := my:$(subst $(space),:,$(PRODUCT_BOOT_JARS)) + +DEXPREOPT_BOOT_JARS_MODULES := $(PRODUCT_BOOT_JARS) \ + my
大功告成:
cat /init.environ.rc
export BOOTCLASSPATH /system/my/path/my.jar:/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/apache-xml.jar
后记
android 7.1上新增jar包问题记录
代码路径 frameworks/base/openapi/
Android.mk LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE_TAGS := optional LOCAL_NO_STANDARD_LIBRARIES := true LOCAL_JAVA_LIBRARIES := core-oj core-libart framework LOCAL_SRC_FILES := $(call all-java-files-under, java) LOCAL_MODULE := openapi LOCAL_DX_FLAGS := --core-library include $(BUILD_JAVA_LIBRARY)
build/target/product/base.mk old mode 100644 new mode 100755 index 4d70664..b8fa3da --- a/build/target/product/base.mk +++ b/build/target/product/base.mk @@ -36,6 +36,7 @@ PRODUCT_PACKAGES += \ dnsmasq \ dpm \ framework \ + openapi \ fsck_msdos \ hid \
修改PRODUCT_BOOT_JARS, 让jar包写入BOOTCLASSPATH
build/target/product/core_minimal.mk @@ -95,6 +95,7 @@ PRODUCT_BOOT_JARS := \ bouncycastle \ ext \ framework \ + openapi \ telephony-common \ voip-common \ ims-common \
build/target/product/core_tiny.mk @@ -92,6 +92,7 @@ PRODUCT_BOOT_JARS := \ bouncycastle \ ext \ framework \ + openapi \ telephony-common \ voip-common \ ims-common \
build/core/pdk_config.mk @@ -24,6 +24,7 @@ PDK_PLATFORM_JAVA_ZIP_JAVA_TARGET_LIB_DIR += \ target/common/obj/JAVA_LIBRARIES/okhttp_intermediates \ target/common/obj/JAVA_LIBRARIES/telephony-common_intermediates \ target/common/obj/JAVA_LIBRARIES/voip-common_intermediates \ + target/common/obj/JAVA_LIBRARIES/openapi_intermediates \
编译后, 并没有产生可供第三方调用的jar包
rk3288_n712$ ls out/target/common/obj/JAVA_LIBRARIES/openapi_intermediates/ ./ ../ classes.dex classes.jack jack_res_jar_flags jack-rsc/ jack-rsc.java-source-list javalib.jar with-local/
解决方法: make一遍
rk3288_n712$ ls out/target/common/obj/JAVA_LIBRARIES/openapi_intermediates/ ./ ../ classes/ classes.dex classes-full-debug.jar classes.jack classes.jar classes-jarjar.jar jack_res_jar_flags jack-rsc/ jack-rsc.java-source-list javalib.jar with-local/
classes.jar改下名, 就可提供给第三方开发商使用.
验证是否写入 out/target/product/rk3288/root/init.environ.rc
export BOOTCLASSPATH /system/framework/core-oj.jar:/system/framework/core-libart.jar:/system/framework/conscrypt.ja
