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1. Android Code Search

https://cs.android.com/

Android
https://cs.android.com/android
Android is a mobile operating system developed by Google

AndroidX
https://cs.android.com/androidx
Libraries for Android development

Android Studio
https://cs.android.com/android-studio
Android Studio projects for building Android applications

Android-llvm
https://cs.android.com/android-llvm
Android branch of the LLVM Project (a collection of modular and reusable compiler and toolchain technologies)

2. Android

https://cs.android.com/android

Android is a mobile operating system developed by Google

2.1. platform/superproject

https://cs.android.com/android/platform/superproject

Repository Root -> Files and Directories

Branch

2.2. build/envsetup.sh

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Path:build/make/envsetup.sh

2.3. build/make/envsetup.sh

source ./build/make/envsetup.sh hmm

Run "m help" for help with the build system itself. Invoke ". build/envsetup.sh" from your shell to add the following functions to your environment: - lunch: lunch <product_name>-<release_type>-<build_variant> Selects <product_name> as the product to build, and <build_variant> as the variant to build, and stores those selections in the environment to be read by subsequent invocations of 'm' etc. - tapas: tapas [<App1> <App2> ...] [arm|x86|arm64|x86_64] [eng|userdebug|user] Sets up the build environment for building unbundled apps (APKs). - banchan: banchan <module1> [<module2> ...] \\ [arm|x86|arm64|riscv64|x86_64|arm64_only|x86_64only] [eng|userdebug|user] Sets up the build environment for building unbundled modules (APEXes). - croot: Changes directory to the top of the tree, or a subdirectory thereof. - m: Makes from the top of the tree. - mm: Builds and installs all of the modules in the current directory, and their dependencies. - mmm: Builds and installs all of the modules in the supplied directories, and their dependencies. To limit the modules being built use the syntax: mmm dir/:target1,target2. - mma: Same as 'mm' - mmma: Same as 'mmm' - provision: Flash device with all required partitions. Options will be passed on to fastboot. - cgrep: Greps on all local C/C++ files. - ggrep: Greps on all local Gradle files. - gogrep: Greps on all local Go files. - jgrep: Greps on all local Java files. - jsongrep: Greps on all local Json files. - ktgrep: Greps on all local Kotlin files. - resgrep: Greps on all local res/*.xml files. - mangrep: Greps on all local AndroidManifest.xml files. - mgrep: Greps on all local Makefiles and *.bp files. - owngrep: Greps on all local OWNERS files. - rsgrep: Greps on all local Rust files. - sepgrep: Greps on all local sepolicy files. - sgrep: Greps on all local source files. - tomlgrep: Greps on all local Toml files. - pygrep: Greps on all local Python files. - godir: Go to the directory containing a file. - allmod: List all modules. - gomod: Go to the directory containing a module. - bmod: Get the Bazel label of a Soong module if it is converted with bp2build. - pathmod: Get the directory containing a module. - outmod: Gets the location of a module's installed outputs with a certain extension. - dirmods: Gets the modules defined in a given directory. - installmod: Adb installs a module's built APK. - refreshmod: Refresh list of modules for allmod/gomod/pathmod/outmod/installmod. - syswrite: Remount partitions (e.g. system.img) as writable, rebooting if necessary. Environment options: - SANITIZE_HOST: Set to 'address' to use ASAN for all host modules. - ANDROID_QUIET_BUILD: set to 'true' to display only the essential messages. ...

References

[1] Yongqiang Cheng (程永强), https://yongqiang.blog.csdn.net/