Build `recovery` with Soong.

Fixes: 110380063
Test: `mmma -j bootable/recovery` with aosp_taimen-userdebug
Test: Build and boot into recovery on taimen. Check the basic
      functionalities (`Apply update from ADB`, `View recovery logs`,
      `Run graphics test`).
Test: Run recovery_unit_test and recovery_component_test on marlin.
Test: Modify `recovery.cpp` locally to trigger the call to
      is_battery_ok(). Check that the battery info is reported
      correctly.
Test: `build/soong/build_test.bash --dist`
Change-Id: I391eb201d57c760e457ba2bf2410ceb72596795c
diff --git a/Android.mk b/Android.mk
index b31b204..8d9094d 100644
--- a/Android.mk
+++ b/Android.mk
@@ -23,11 +23,6 @@
 # librecovery_ui_default, which uses ScreenRecoveryUI.
 TARGET_RECOVERY_UI_LIB ?= librecovery_ui_default
 
-recovery_common_cflags := \
-    -Wall \
-    -Werror \
-    -DRECOVERY_API_VERSION=$(RECOVERY_API_VERSION)
-
 # librecovery_ui_ext (shared library)
 # ===================================
 include $(CLEAR_VARS)
@@ -49,169 +44,16 @@
 LOCAL_SHARED_LIBRARIES := \
     libbase \
     liblog \
-    librecovery_ui
+    librecovery_ui.recovery
 
 include $(BUILD_SHARED_LIBRARY)
 
-# librecovery_ui (shared library)
-# ===============================
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := \
-    device.cpp \
-    screen_ui.cpp \
-    ui.cpp \
-    vr_ui.cpp \
-    wear_ui.cpp
-
-LOCAL_MODULE := librecovery_ui
-
-LOCAL_CFLAGS := $(recovery_common_cflags)
-
-LOCAL_MULTILIB := first
-
-ifeq ($(TARGET_IS_64_BIT),true)
-LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/lib64
-else
-LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/lib
-endif
-
-LOCAL_STATIC_LIBRARIES := \
-    libminui \
-    libotautil \
-
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libpng \
-    libz \
-
-include $(BUILD_SHARED_LIBRARY)
-
-# librecovery_ui (static library)
-# ===============================
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := \
-    device.cpp \
-    screen_ui.cpp \
-    ui.cpp \
-    vr_ui.cpp \
-    wear_ui.cpp
-
-LOCAL_MODULE := librecovery_ui
-
-LOCAL_CFLAGS := $(recovery_common_cflags)
-
-LOCAL_STATIC_LIBRARIES := \
-    libminui \
-    libotautil \
-
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libpng \
-    libz \
-
-include $(BUILD_STATIC_LIBRARY)
-
-# Health HAL dependency
-health_hal_static_libraries := \
-    android.hardware.health@2.0-impl \
-    android.hardware.health@2.0 \
-    android.hardware.health@1.0 \
-    android.hardware.health@1.0-convert \
-    libhealthstoragedefault \
-    libhidltransport \
-    libhidlbase \
-    libhwbinder_noltopgo \
-    libvndksupport \
-    libbatterymonitor
-
-librecovery_static_libraries := \
-    libfusesideload \
-    libminadbd \
-    libminui \
-    libverifier \
-    libotautil \
-    $(health_hal_static_libraries) \
-    libvintf_recovery \
-    libvintf \
-
-librecovery_shared_libraries := \
-    libasyncio \
-    libbase \
-    libbootloader_message \
-    libcrypto \
-    libcrypto_utils \
-    libcutils \
-    libext4_utils \
-    libfs_mgr \
-    libhidl-gen-utils \
-    liblog \
-    libpng \
-    libselinux \
-    libtinyxml2 \
-    libutils \
-    libz \
-    libziparchive \
-
-# librecovery (static library)
-# ===============================
+# recovery_deps: A phony target that's depended on by `recovery`, which
+# builds additional modules conditionally based on Makefile variables.
+# ======================================================================
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES := \
-    adb_install.cpp \
-    fsck_unshare_blocks.cpp \
-    fuse_sdcard_provider.cpp \
-    install.cpp \
-    recovery.cpp \
-    roots.cpp \
-
-LOCAL_C_INCLUDES := \
-    system/vold \
-
-LOCAL_CFLAGS := $(recovery_common_cflags)
-
-LOCAL_MODULE := librecovery
-
-LOCAL_STATIC_LIBRARIES := \
-    $(librecovery_static_libraries)
-
-LOCAL_SHARED_LIBRARIES := \
-    $(librecovery_shared_libraries)
-
-include $(BUILD_STATIC_LIBRARY)
-
-# recovery (static executable)
-# ===============================
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-    logging.cpp \
-    recovery_main.cpp \
-
-LOCAL_MODULE := recovery
-
-LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/bin
-
-# Cannot link with LLD: undefined symbol: UsbNoPermissionsLongHelpText
-# http://b/77543887, lld does not handle -Wl,--gc-sections as well as ld.
-LOCAL_USE_CLANG_LLD := false
-
-LOCAL_CFLAGS := $(recovery_common_cflags)
-
-LOCAL_STATIC_LIBRARIES := \
-    librecovery \
-    librecovery_ui_default \
-    $(librecovery_static_libraries)
-
-LOCAL_SHARED_LIBRARIES := \
-    librecovery_ui \
-    $(librecovery_shared_libraries)
-
-LOCAL_HAL_STATIC_LIBRARIES := libhealthd
-
-LOCAL_REQUIRED_MODULES := \
-    e2fsdroid.recovery \
-    mke2fs.recovery \
-    mke2fs.conf
+LOCAL_MODULE := recovery_deps
 
 ifeq ($(TARGET_USERIMAGES_USE_F2FS),true)
 ifeq ($(HOST_OS),linux)
@@ -235,31 +77,7 @@
     recovery-refresh
 endif
 
-LOCAL_REQUIRED_MODULES += \
-    librecovery_ui_ext
-
-# TODO(b/110380063): Explicitly install the following shared libraries to recovery, until `recovery`
-# module is built with Soong (with `recovery: true` flag).
-LOCAL_REQUIRED_MODULES += \
-    libasyncio.recovery \
-    libbase.recovery \
-    libbootloader_message.recovery \
-    libcrypto.recovery \
-    libcrypto_utils.recovery \
-    libcutils.recovery \
-    libext4_utils.recovery \
-    libfs_mgr.recovery \
-    libhidl-gen-utils.recovery \
-    liblog.recovery \
-    libpng.recovery \
-    libselinux.recovery \
-    libsparse.recovery \
-    libtinyxml2.recovery \
-    libutils.recovery \
-    libz.recovery \
-    libziparchive.recovery \
-
-include $(BUILD_EXECUTABLE)
+include $(BUILD_PHONY_PACKAGE)
 
 include \
     $(LOCAL_PATH)/boot_control/Android.mk \