Add new user setup command banchan for module building.

#!/bin/bash

# locate some directories

cd "$(dirname $0)"

SCRIPT_DIR="${PWD}"

cd ../..

TOP="${PWD}"

message='usage: banchan <module> ... [arm|x86|arm64|x86_64] [eng|userdebug|user]

banchan selects individual APEX modules to be built by the Android build system.

Like "tapas", "banchan" does not request the building of images for a device but

instead configures it for an unbundled build of the given modules, suitable for

installing on any api-compatible device.

The difference from "tapas" is that "banchan" sets the appropriate products etc

for building APEX modules rather than apps (APKs).

The module names should match apex{} modules in Android.bp files, typically

starting with "com.android.".

The usage of the other arguments matches that of the rest of the platform

build system and can be found by running `m help`'

echo "$message"

              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|x86_64] [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

    destroy_build_var_cache

}

# Configures the build to build unbundled Android modules (APEXes).

# Run banchan with one or more module names (from apex{} modules).

function banchan()

{

    local showHelp="$(echo $* | xargs -n 1 echo | \grep -E '^(help)$' | xargs)"

    local arch="$(echo $* | xargs -n 1 echo | \grep -E '^(arm|x86|arm64|x86_64)$' | xargs)"

    local variant="$(echo $* | xargs -n 1 echo | \grep -E '^(user|userdebug|eng)$' | xargs)"

    local apps="$(echo $* | xargs -n 1 echo | \grep -E -v '^(user|userdebug|eng|arm|x86|arm64|x86_64)$' | xargs)"

    if [ "$showHelp" != "" ]; then

      $(gettop)/build/make/banchanHelp.sh

      return

    fi

    if [ $(echo $arch | wc -w) -gt 1 ]; then

        echo "banchan: Error: Multiple build archs supplied: $arch"

        return

    fi

    if [ $(echo $variant | wc -w) -gt 1 ]; then

        echo "banchan: Error: Multiple build variants supplied: $variant"

        return

    fi

    if [ -z "$apps" ]; then

        echo "banchan: Error: No modules supplied"

        return

    fi

    local product=module_arm

    case $arch in

      x86)    product=module_x86;;

      arm64)  product=module_arm64;;

      x86_64) product=module_x86_64;;

    esac

    if [ -z "$variant" ]; then

        variant=eng

    fi

    export TARGET_PRODUCT=$product

    export TARGET_BUILD_VARIANT=$variant

    export TARGET_BUILD_DENSITY=alldpi

    export TARGET_BUILD_TYPE=release

    # This setup currently uses TARGET_BUILD_APPS just like tapas, but the use

    # case is different and it may diverge in the future.

    export TARGET_BUILD_APPS=$apps

    build_build_var_cache

    set_stuff_for_environment

    printconfig

    destroy_build_var_cache

}

function gettop

{

    local TOPFILE=build/make/core/envsetup.mk