青岛城阳网站建设,视频模板免费下载网站,专业做电脑系统下载网站好,金融类网站模板文章目录0. 导读1. 指定 Android 编译输出目录2. 指定 Android dist 编译输出目录3. 指定 Android 模块编译输出目录4. Android 源码中编译相关的文档0. 导读
偶尔会有朋友问编译 Android 时如何指定输出目录?
这里有两种情况#xff1a;
一是如何将 Android 默认的输出目…
文章目录0. 导读1. 指定 Android 编译输出目录2. 指定 Android dist 编译输出目录3. 指定 Android 模块编译输出目录4. Android 源码中编译相关的文档0. 导读
偶尔会有朋友问编译 Android 时如何指定输出目录?
这里有两种情况
一是如何将 Android 默认的输出目录 out 改到其它位置
二是指定某个模块的输出目录。
设置 Android 默认输出的目录请参考第 1 节
设置 Android dist 编译输出目录请参考第 2 节
设置 Android 某个模块的编译输出目录请参考第 3 节
如何查找系统中的文档请参考第 4 节
1. 指定 Android 编译输出目录
比如我现在要基于 android-12.0.0_r28 的源码编译 Pixel 5a 设备(代号: barbet)的 image。
Android 默认的输出目录为 out想将默认的输出目录修改为 out-barbet:
android-12.0.0_r28$ export OUT_DIRout-barbet
android-12.0.0_r28$ source build/envsetup.sh
android-12.0.0_r28$ lunch aosp_barbet-userdebug
PLATFORM_VERSION_CODENAMEREL
PLATFORM_VERSION12
TARGET_PRODUCTaosp_barbet
TARGET_BUILD_VARIANTuserdebug
TARGET_BUILD_TYPErelease
TARGET_ARCHarm64
TARGET_ARCH_VARIANTarmv8-a
TARGET_CPU_VARIANTgeneric
TARGET_2ND_ARCHarm
TARGET_2ND_ARCH_VARIANTarmv8-a
TARGET_2ND_CPU_VARIANTgeneric
HOST_ARCHx86_64
HOST_2ND_ARCHx86
HOST_OSlinux
HOST_OS_EXTRALinux-5.4.0-54-generic-x86_64-Ubuntu-20.04.4-LTS
HOST_CROSS_OSwindows
HOST_CROSS_ARCHx86
HOST_CROSS_2ND_ARCHx86_64
HOST_BUILD_TYPErelease
BUILD_IDSQ1A.220205.002
OUT_DIRout-barbet
PRODUCT_SOONG_NAMESPACEShardware/google/av hardware/google/camera...android-12.0.0_r28$ 在这里我们能够看到输出目录已经设置为: OUT_DIRout-barbet 了。
如果在 source 以后的环境中查看当前编译的配置可以在命令行执行 printconfig 查看:
$ printconfig2. 指定 Android dist 编译输出目录
Android 编译输出目录 OUT_DIR 默认为 “out”存放的是非发布的文件。
当你要发布版本时通常会编译 dist 目标这个目标默认输出路径在 “out/dist” 下可以通过设置 DIST_DIR 进行修改如下
make aosp_barbet-userdebug dist DIST_DIRdist-barbet这里的 dist 是 distribution 的简称字面意思是“发布、分发” 3. 指定 Android 模块编译输出目录
有时候自己开发一个模块想把这个模块编译输出到指定目录下(例如 “/vendor/app”)或者已经编译好的 apk想存放到系统预制的 app 目录下(例如: “/system/priv-app”)可以通过修改模块对应 Android.mk 中的变量 LOCAL_MODULE_PATH 来达到这个目的。
我们看两个 Android 自带的例子吧。
将库文件 librecovery_ui_ext 编译输出到某个 lib64 或 lib录下。
# bootable/recovery/Android.mk# librecovery_ui_ext (shared library)
#
include $(CLEAR_VARS)LOCAL_MODULE : librecovery_ui_ext# LOCAL_MODULE_PATH for shared libraries is unsupported in multiarch builds.
LOCAL_MULTILIB : firstifeq ($(TARGET_IS_64_BIT),true)
LOCAL_MODULE_PATH : $(TARGET_RECOVERY_ROOT_OUT)/system/lib64
else
LOCAL_MODULE_PATH : $(TARGET_RECOVERY_ROOT_OUT)/system/lib
endifLOCAL_WHOLE_STATIC_LIBRARIES : \$(TARGET_RECOVERY_UI_LIB)LOCAL_SHARED_LIBRARIES : \libbase \liblog \librecovery_ui.recoveryinclude $(BUILD_SHARED_LIBRARY)如果是 64 位的目标环境则输出到目录
out/target/product/xxx/recovery/root/system/lib64
其它情况输出到目录
out/target/product/xxx/recovery/root/system/lib
将应用LeanbackCustomizer 放到系统预置目录system-priv 目录中
# device/sample/apps/tv/LeanbackCustomizer/Android.mk
LOCAL_PATH: $(call my-dir)
include $(CLEAR_VARS)LOCAL_MODULE_TAGS : optional
LOCAL_MODULE_PATH : $(PRODUCT_OUT)/system/priv-appLOCAL_SRC_FILES : $(call all-java-files-under, src)LOCAL_PACKAGE_NAME : LeanbackCustomizerLOCAL_SDK_VERSION : currentinclude $(BUILD_PACKAGE)4. Android 源码中编译相关的文档
其实在 Android 代码中有包含一些如何编译 Android 的说明文档主要有以下几个
build/soong/README.md Android 编译相关说明文档的主入口 build/make/Usage.txt Android 编译说明 build/make/Changes.md Android 编译和上一版本的改变 build/make/Deprecation.md Android 编译中一些过时的不再使用的设置 build/core/build-system.html Android 以前的编译说明文档也仍然值得一看
记不住这些文档的路径和名字怎么办
又或者除了这些文档想看下 soong, kati, bazel, blueprint 等其它工具要如何使用该怎么办
一条 find 命令即可解决这个问题在 Android 源码的根目录下执行下面这条 find 命令:
android-12.0.0_r28$ find build/ -type f -a \( -iname *.md -o -iname *.txt -o -iname *.pdf -o -iname *.html \)
build/make/target/board/generic_x86_64_arm64/README.txt
build/make/target/board/generic_arm64/README.txt
build/make/target/board/generic_x86/README.txt
build/make/target/board/generic_64bitonly_x86_64/README.txt
build/make/target/board/generic_x86_arm/README.txt
build/make/target/board/module_arm/README.md
build/make/target/board/module_arm64/README.md
build/make/target/board/generic_x86_64/README.txt
build/make/target/board/generic/README.txt
build/make/target/board/module_x86/README.md
build/make/target/board/module_x86_64/README.md
build/make/target/board/mainline_sdk/README.md
build/make/target/product/gsi/31.txt
build/make/target/product/gsi/current.txt
build/make/target/product/gsi/29.txt
build/make/target/product/gsi/28.txt
build/make/target/product/gsi/30.txt
build/make/target/product/virtual_ab_ota/README.md
build/make/Deprecation.md
build/make/README.md
build/make/core/build-system.html
build/make/navbar.md
build/make/tools/fs_config/README.md
build/make/tools/zipalign/README.txt
build/make/tools/docker/README.md
build/make/tools/rbcrun/README.md
build/make/tools/ziptime/README.txt
build/make/tools/releasetools/jarjar-rules.txt
build/make/tools/releasetools/testdata/apexkeys_framework.txt
build/make/tools/releasetools/testdata/apkcerts_framework.txt
build/make/tools/releasetools/testdata/apexkeys_vendor.txt
build/make/tools/releasetools/testdata/apexkeys_merge.txt
build/make/tools/releasetools/testdata/apkcerts_vendor.txt
build/make/tools/releasetools/testdata/apexkeys_framework_conflict.txt
build/make/tools/releasetools/testdata/apkcerts_merge.txt
build/make/Changes.md
build/make/Usage.txt
build/soong/README.md
build/soong/navbar.md
build/soong/java/lint_defaults.txt
build/soong/cc/config/integer_overflow_blocklist.txt
build/soong/python/scripts/stub_template_host.txt
build/soong/scripts/check_boot_jars/package_allowed_list.txt
build/soong/docs/map_files.md
build/soong/docs/best_practices.md
build/soong/docs/clion.md
build/soong/docs/compdb.md
build/soong/docs/perf.md
build/bazel/README.md
build/bazel/examples/queryview/README.md
build/bazel/examples/queryview/apex_available.txt
build/bazel/examples/queryview/nocrt.txt
build/bazel/examples/queryview/android_apps.txt
build/bazel/examples/queryview/libc.txt
build/bazel/bazel_skylib/README.md
build/bazel/rules_cc/README.md
build/bazel/json_module_graph/README.md
build/bazel/docs/concepts.md
build/blueprint/README.md
build/blueprint/CONTRIBUTING.md
build/pesto/experiments/prepare_bazel_test_env/README.md上面这条 find 命令查找 build 目录下所有后缀为 md, txt, pdf 和 html 的文件基本上包含了常用的文档格式。
如果觉得不能满足需要那就根据情况将这条 find 命令稍微调整一下吧。 思考题 Android 编译时有 m, mm, mmm 这些命令你能在 Android 代码中找到这些命令的使用说明吗
