#
# Nanoapp Makefile
#
# Include this file in your nanoapp Makefile to produce binary nanoapps to
# target a variety of architectures.
#

# Nanoapp Build Configuration Checks ###########################################

ifeq ($(NANOAPP_NAME),)
$(error "The NANOAPP_NAME variable must be set to the name of the nanoapp. \
         This should be assigned by the Makefile that includes app.mk.")
endif

ifeq ($(NANOAPP_ID),)
$(error "The NANOAPP_ID variable must be set to the ID of the nanoapp. \
         This should be assigned by the Makefile that includes app.mk.")
endif

ifeq ($(NANOAPP_VERSION),)
$(error "The NANOAPP_VERSION variable must be set to the version of the nanoapp. \
         This should be assigned by the Makefile that includes app.mk.")
endif

ifeq ($(BUILD_ID),)
# If BUILD_ID is unset this must be a local build.
BUILD_ID = local
endif

NANOAPP_VERSION := $(strip $(NANOAPP_VERSION))
MATCHED_NANOAPP_VERSION := $(shell echo $(NANOAPP_VERSION) \
                                 | grep "^0x[0-9a-fA-F]\{8\}")
ifneq ($(MATCHED_NANOAPP_VERSION), $(NANOAPP_VERSION))
$(error "The NANOAPP_VERSION must be a 4-byte hex-formatted integer. Example: \
         0x00000101")
endif

ifeq ($(NANOAPP_NAME_STRING),)
$(error "The NANOAPP_NAME_STRING variable must be set to the friendly name of \
         the nanoapp. This should be assigned by the Makefile that includes \
         app.mk.")
endif

ifeq ($(NANOAPP_VENDOR_STRING),)
$(info "NANOAPP_VENDOR_STRING not supplied, defaulting to \"Google\".")
NANOAPP_VENDOR_STRING = \"Google\"
endif

ifeq ($(NANOAPP_IS_SYSTEM_NANOAPP),)
$(info "NANOAPP_IS_SYSTEM_NANOAPP not supplied, defaulting to 0.")
NANOAPP_IS_SYSTEM_NANOAPP = 0
endif

ifeq ($(NANOAPP_REQUESTED_THREAD_PRIORITY),)
$(info "NANOAPP_REQUESTED_THREAD_PRIORITY not supplied, defaulting to normal.")
NANOAPP_REQUESTED_THREAD_PRIORITY = NANOAPP_REQUESTED_THREAD_PRIORITY_NORMAL
endif

ifeq ($(CHRE_PREFIX),)
ifeq ($(ANDROID_BUILD_TOP),)
$(error "You must run lunch, or specify an explicit CHRE_PREFIX environment \
         variable")
else
CHRE_PREFIX = $(ANDROID_BUILD_TOP)/system/chre
endif
endif

# Nanoapp Build ################################################################

# This variable indicates to the variants that some post-processing may be
# required as the target is a nanoapp.
IS_NANOAPP_BUILD = true

# Common App Build Configuration ###############################################

OUTPUT_NAME = $(NANOAPP_NAME)

# Permissions declaration ######################################################

ifneq ($(CHRE_NANOAPP_USES_AUDIO),)
COMMON_CFLAGS += -DCHRE_NANOAPP_USES_AUDIO
endif

ifneq ($(CHRE_NANOAPP_USES_BLE),)
COMMON_CFLAGS += -DCHRE_NANOAPP_USES_BLE
endif

ifneq ($(CHRE_NANOAPP_USES_GNSS),)
COMMON_CFLAGS += -DCHRE_NANOAPP_USES_GNSS
endif

ifneq ($(CHRE_NANOAPP_USES_WIFI),)
COMMON_CFLAGS += -DCHRE_NANOAPP_USES_WIFI
endif

ifneq ($(CHRE_NANOAPP_USES_WWAN),)
COMMON_CFLAGS += -DCHRE_NANOAPP_USES_WWAN
endif

# Common Compiler Flags ########################################################

# Add the CHRE API to the include search path.
COMMON_CFLAGS += -I$(CHRE_PREFIX)/chre_api/include
COMMON_CFLAGS += -I$(CHRE_PREFIX)/chre_api/include/chre_api

# Don't pull in the utils folder if not desired
ifneq ($(NANOAPP_NO_UTILS_INCLUDE),true)
COMMON_CFLAGS += -I$(CHRE_PREFIX)/util/include
endif

# As one nanaopp should only run in one thread, we don't want the compiler to
# generate __cxa_guard_acquire/__cxa_guard_release which could be not supported
# by platforms.
# Note: this flag is clang/GCC-specific, so ideally it would go in a
# compiler-specific area, but today there is no good place and we do not build
# with other toolchains using this build system.
COMMON_CFLAGS += -fno-threadsafe-statics

# Allows a nanoapp to know that is compiled separately from the CHRE system.
COMMON_CFLAGS += -DCHRE_IS_NANOAPP_BUILD

# Compile FlatBuffers in a portable way.
COMMON_CFLAGS += -DFLATBUFFERS_CHRE

# Nanoapp configuration flags.
COMMON_CFLAGS += -DNANOAPP_ID=$(NANOAPP_ID)
COMMON_CFLAGS += -DNANOAPP_VERSION=$(NANOAPP_VERSION)
COMMON_CFLAGS += -DNANOAPP_VENDOR_STRING=$(NANOAPP_VENDOR_STRING)
COMMON_CFLAGS += -DNANOAPP_NAME_STRING=$(NANOAPP_NAME_STRING)
COMMON_CFLAGS += -DNANOAPP_IS_SYSTEM_NANOAPP=$(NANOAPP_IS_SYSTEM_NANOAPP)
COMMON_CFLAGS += -DNANOAPP_REQUESTED_THREAD_PRIORITY=$(NANOAPP_REQUESTED_THREAD_PRIORITY)

# Unstable ID ##################################################################

COMMIT_HASH_DIRTY_SUFFIX = $(shell git diff --quiet || echo -dirty)
COMMIT_HASH = $(shell git log -1 --pretty="format:%h" .)$(COMMIT_HASH_DIRTY_SUFFIX)
NANOAPP_UNSTABLE_ID = "nanoapp=$(NANOAPP_NAME)@$(BUILD_ID)"
COMMON_CFLAGS += -DNANOAPP_UNSTABLE_ID="\"$(NANOAPP_UNSTABLE_ID)\""

# Optional tokenized logging support for nanoapps ##############################

ifneq ($(CHRE_NANOAPP_TOKENIZED_LOGGING_ENABLED),)
COMMON_CFLAGS += -DCHRE_NANOAPP_TOKENIZED_LOGGING_ENABLED
include $(CHRE_PREFIX)/external/pigweed/pw_tokenizer.mk
endif

# Variant-specific Nanoapp Support Source Files ################################

APP_SUPPORT_PATH = $(CHRE_PREFIX)/build/app_support
SHARED_NANOAPP_LIB_PATH = $(CHRE_PREFIX)/platform/shared/nanoapp
DSO_SUPPORT_LIB_SRCS = $(SHARED_NANOAPP_LIB_PATH)/nanoapp_support_lib_dso.cc
STACK_CHECK_SRCS =  $(SHARED_NANOAPP_LIB_PATH)/nanoapp_stack_check.cc

# Required includes for nanoapp_support_lib_dso.cc, but using a special prefix
# directory and symlinks to effectively hide them from nanoapps
DSO_SUPPORT_LIB_CFLAGS = -I$(CHRE_PREFIX)/platform/shared/nanoapp/include

GOOGLE_HEXAGONV62_SLPI_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV62_SLPI-UIMG_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV65_ADSP-SEE_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV65_ADSP-SEE-UIMG_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV65_SLPI-SEE_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV65_SLPI-SEE-UIMG_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV66_ADSP-SEE_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV66_ADSP-SEE-UIMG_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV66_SLPI-SEE_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV66_SLPI-SEE-UIMG_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_HEXAGONV66_SLPI-QSH_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_ARM64_ANDROID_SRCS += $(DSO_SUPPORT_LIB_SRCS)
GOOGLE_X86_LINUX_SRCS += $(DSO_SUPPORT_LIB_SRCS)

GOOGLE_HEXAGONV62_SLPI_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV62_SLPI-UIMG_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV65_ADSP-SEE_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV65_ADSP-SEE-UIMG_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV65_SLPI-SEE_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV65_SLPI-SEE-UIMG_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV66_ADSP-SEE_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV66_ADSP-SEE-UIMG_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV66_SLPI-SEE_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV66_SLPI-SEE-UIMG_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_HEXAGONV66_SLPI-QSH_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_ARM64_ANDROID_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)
GOOGLE_X86_LINUX_CFLAGS += $(DSO_SUPPORT_LIB_CFLAGS)

# Makefile Includes ############################################################

# Standard library overrides include
CHRE_STD_OVERRIDES_ALLOWED ?= true
include $(CHRE_PREFIX)/std_overrides/std_overrides.mk

# Common includes
include $(CHRE_PREFIX)/build/defs.mk
include $(CHRE_PREFIX)/build/common.mk

# CHRE API version.
include $(CHRE_PREFIX)/chre_api/chre_api_version.mk

# Supported variants includes
ifneq ($(CHRE_TARGET_EXTENSION),)
include $(CHRE_TARGET_EXTENSION)
endif
include $(CHRE_PREFIX)/build/variant/aosp_cm4_exynos-embos.mk
include $(CHRE_PREFIX)/build/variant/aosp_riscv55e03_tinysys.mk
include $(CHRE_PREFIX)/build/variant/aosp_riscv55e300_tinysys.mk
include $(CHRE_PREFIX)/build/variant/google_arm64_android.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv62_slpi.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv62_slpi-uimg.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv65_adsp-see.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv65_adsp-see-uimg.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv65_slpi-see.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv65_slpi-see-uimg.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv66_adsp-see.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv66_adsp-see-uimg.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv66_slpi-see.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv66_slpi-see-uimg.mk
include $(CHRE_PREFIX)/build/variant/google_hexagonv66_slpi-qsh.mk
include $(CHRE_PREFIX)/build/variant/google_x86_linux.mk