component.mk

# Component makefile for homekit

ifdef component_compile_rules
    # ESP_OPEN_RTOS
    ifndef wolfssl_ROOT
    $(error Please include wolfssl component prior to homekit)
    endif

    ifndef cJSON_ROOT
    $(error Please include cJSON component prior to homekit)
    endif

    ifndef http-parser_ROOT
    $(error Please include http-parser component prior to homekit)
    endif

    # Base flash address where persisted information (e.g. pairings) will be stored
    HOMEKIT_SPI_FLASH_BASE_ADDR ?= 0x100000
    # Maximum number of simultaneous clients allowed.
    # Each connected client requires ~1100-1200 bytes of RAM.
    HOMEKIT_MAX_CLIENTS ?= 16
    # Set to 1 to enable WolfSSL low resources, saving about 70KB in firmware size,
    # but increasing pair verify time from 1 to 7 secs (Without overclocking).
    HOMEKIT_SMALL ?= 0
    # Set to 1 to enable the ability to use overclock on some functions (It will reduce times by half).
    HOMEKIT_OVERCLOCK ?= 1
    # Set to 1 to enable overclock on initial pair-setup function (Requires HOMEKIT_OVERCLOCK = 1).
    HOMEKIT_OVERCLOCK_PAIR_SETUP ?= 1
    # Set to 1 to enable overclock on pair-verify function (Requires HOMEKIT_OVERCLOCK = 1).
    HOMEKIT_OVERCLOCK_PAIR_VERIFY ?= 1

    INC_DIRS += $(homekit_ROOT)/include

    homekit_INC_DIR = $(homekit_ROOT)/include $(homekit_ROOT)/src
    homekit_SRC_DIR = $(homekit_ROOT)/src

    $(eval $(call component_compile_rules,homekit))

    EXTRA_WOLFSSL_CFLAGS = \
        -DWOLFCRYPT_HAVE_SRP \
        -DWOLFSSL_SHA512 \
        -DNO_MD5 \
        -DNO_SHA \
        -DHAVE_HKDF \
        -DHAVE_CHACHA \
        -DHAVE_POLY1305 \
        -DHAVE_ED25519 \
        -DHAVE_CURVE25519 \
        -DNO_SESSION_CACHE \
        -DRSA_LOW_MEM \
        -DGCM_SMALL \
        -DUSE_SLOW_SHA512 \
        -DWOLFCRYPT_ONLY

    ifeq ($(HOMEKIT_SMALL),1)
    EXTRA_WOLFSSL_CFLAGS += \
        -DCURVE25519_SMALL \
        -DED25519_SMALL
    endif

    wolfssl_CFLAGS += $(EXTRA_WOLFSSL_CFLAGS)
    homekit_CFLAGS += $(EXTRA_WOLFSSL_CFLAGS) \
        -DESP_OPEN_RTOS \
        -DSPIFLASH_BASE_ADDR=$(HOMEKIT_SPI_FLASH_BASE_ADDR) \
        -DHOMEKIT_MAX_CLIENTS=$(HOMEKIT_MAX_CLIENTS)

    ifeq ($(HOMEKIT_OVERCLOCK),1)
        ifeq ($(HOMEKIT_OVERCLOCK_PAIR_SETUP),1)
        homekit_CFLAGS += -DHOMEKIT_OVERCLOCK_PAIR_SETUP
        endif
        ifeq ($(HOMEKIT_OVERCLOCK_PAIR_VERIFY),1)
        homekit_CFLAGS += -DHOMEKIT_OVERCLOCK_PAIR_VERIFY
        endif
    endif

    ifeq ($(HOMEKIT_DEBUG),1)
    homekit_CFLAGS += -DHOMEKIT_DEBUG
    endif

else
    # ESP_IDF
    COMPONENT_DEPENDS = wolfssl cJSON http-parser

    COMPONENT_PRIV_INCLUDEDIRS = src
    COMPONENT_SRCDIRS = src
    COMPONENT_OBJEXCLUDE = src/mdnsresponder.o

endif