LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

# The core library is divided into modules. Each module has a separate Java
# source directory, and some (hopefully eventually all) also have a directory
# for tests. The two sections below define separate targets to build the
# core and the associated tests.

define all-core-java-files
$(patsubst ./%,%,$(shell cd $(LOCAL_PATH) && find */src/$(1)/java -name "*.java"))
endef

# Redirect ls stderr to /dev/null because the corresponding resources
# directory doesn't always exist.
define all-core-resource-dirs
$(shell cd $(LOCAL_PATH) && ls -d */src/$(1)/{java,resources} 2> /dev/null)
endef

LOCAL_SRC_FILES := $(call all-core-java-files,main)
LOCAL_JAVA_RESOURCE_DIRS := $(call all-core-resource-dirs,main)

LOCAL_NO_STANDARD_LIBRARIES := true
LOCAL_DX_FLAGS := --core-library

LOCAL_NO_EMMA_INSTRUMENT := true
LOCAL_NO_EMMA_COMPILE := true

LOCAL_MODULE := core

include $(BUILD_JAVA_LIBRARY)



# Definitions to make the core-tests library.

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-core-java-files,test)
LOCAL_JAVA_RESOURCE_DIRS := $(call all-core-resource-dirs,test)

LOCAL_NO_STANDARD_LIBRARIES := true
LOCAL_JAVA_LIBRARIES := core
LOCAL_DX_FLAGS := --core-library

LOCAL_MODULE_TAGS := tests
LOCAL_MODULE := core-tests

include $(BUILD_JAVA_LIBRARY)

$(LOCAL_INSTALLED_MODULE): run-core-tests



# Definitions to copy the core-tests runner script.

include $(CLEAR_VARS)
LOCAL_SRC_FILES := run-core-tests
LOCAL_MODULE_CLASS := EXECUTABLES
LOCAL_MODULE_TAGS := tests
LOCAL_MODULE := run-core-tests
include $(BUILD_PREBUILT)



# Build all of the native code, if any is present.

include $(CLEAR_VARS)

# Get the list of all native directories that contain sub.mk files.
# We're using "sub.mk" to make it clear that these are not typical
# android makefiles.
define all-core-native-dirs
$(patsubst %/sub.mk,%,$(shell cd $(LOCAL_PATH) && ls -d */src/$(1)/native/sub.mk 2> /dev/null))
endef

core_magic_local_target := ...//::default:://...
core_local_path := $(LOCAL_PATH)

# Include a submakefile, resolve its source file locations,
# and stick them on core_src_files.  The submakefiles are
# free to append to LOCAL_C_INCLUDES, LOCAL_SHARED_LIBRARIES, etc.
#
# $(1): directory containing the makefile to include
define include-core-native-dir
    LOCAL_SRC_FILES :=
    include $(LOCAL_PATH)/$(1)/sub.mk
    ifneq ($$(LOCAL_MODULE),$(core_magic_local_target))
        $$(error $(LOCAL_PATH)/$(1)/sub.mk should not include CLEAR_VARS \
            or define LOCAL_MODULE)
    endif
    ifneq ($$(LOCAL_PATH),$(core_local_path))
        $$(error $(LOCAL_PATH)/$(1)/sub.mk should not define LOCAL_PATH)
    endif
    core_src_files += $$(addprefix $(1)/,$$(LOCAL_SRC_FILES))
    LOCAL_SRC_FILES :=
endef

# Find any native directories containing sub.mk files.
core_native_dirs := $(strip $(call all-core-native-dirs,main))
ifeq ($(core_native_dirs),)
    $(error No native code defined for libcore)
endif

# Set up the default state.
LOCAL_C_INCLUDES += $(JNI_H_INCLUDE)
LOCAL_MODULE := $(core_magic_local_target)
core_src_files :=

# Include the sub.mk files.
$(foreach dir, \
    $(core_native_dirs), \
    $(eval $(call include-core-native-dir,$(dir))))

# Define the rules.
LOCAL_SRC_FILES := $(core_src_files)
LOCAL_MODULE := libjavacore
include $(BUILD_STATIC_LIBRARY)

# Deal with keystores required for security. Note: The path to this file
# is hardcoded in TrustManagerFactoryImpl.java.
ALL_PREBUILT += $(TARGET_OUT)/etc/security/cacerts.bks
$(TARGET_OUT)/etc/security/cacerts.bks : $(LOCAL_PATH)/security/src/main/files/cacerts.bks | $(ACP)
	$(transform-prebuilt-to-target)