BUILD_TYPE = debug

PLATFORM_CC = /usr/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-gcc
PLATFORM_AR = /usr/opt/FriendlyARM/toolschain/4.4.3/bin/arm-linux-ar
PLATFORM_OS = linux

Uncomment below and specify PATH to your toolchain when cross-compile SDK

PLATFORM_CC = /home/edward/cached-toolchains/jcg.7620/bin/mipsel-linux-gcc

PLATFORM_AR = /home/edward/cached-toolchains/jcg.7620/bin/mipsel-linux-ar

PLATFORM_CC = armcc

PLATFORM_AR = armar

FEATURE_MQTT_COMM_ENABLED = y
FEATURE_MQTT_DIRECT = y
FEATURE_MQTT_DIRECT_NOTLS = n
FEATURE_COAP_COMM_ENABLED = y
FEATURE_OTA_ENABLED = y
FEATURE_OTA_SIGNAL_CHANNEL = COAP

x86上已经编译过了，交叉编译bin目录下没有生成可执行文件。

o RELEASE PACKAGE LAYOUT:

/home/book/aliyun/iotkit-embedded-RELEASED_V2_01_20171010/output/release

+-- bin
+-- src
|   +-- Makefile
|   +-- http-example.c
|   +-- coap-example.c
|   +-- mqtt-example.c
+-- include
|   +-- iot-sdk
|   |   +-- imports
|   |   |   +-- iot_import_dtls.h
|   |   |   +-- iot_import_ota.h
|   |   |   +-- iot_import_coap.h
|   |   +-- exports
|   |   |   +-- iot_export_shadow.h
|   |   |   +-- iot_export_http.h
|   |   |   +-- iot_export_ota.h
|   |   |   +-- iot_export_mqtt.h
|   |   |   +-- iot_export_coap.h
|   |   |   +-- iot_export_errno.h
|   |   +-- iot_export.h
|   |   +-- iot_import.h
+-- lib
|   +-- libiot_sdk.a

o BINARY FOOTPRINT CONSIST:

 19.67%                  utils_httpc.o | utils     16344 / 83092   
 16.70%                   utils_sha1.o | utils     13876 / 83092   
 11.70%                    utils_md5.o | utils      9724 / 83092   
 7.20%         lite-utils_testsuites.o | utils      5980 / 83092   
 5.99%                    utils_list.o | utils      4976 / 83092   
 5.45%                    json_token.o | utils      4528 / 83092   
 5.24%                  string_utils.o | utils      4352 / 83092   
 5.01%                   json_parser.o | utils      4160 / 83092   
 4.94%                     utils_net.o | utils      4108 / 83092   
 4.92%              utils_epoch_time.o | utils      4088 / 83092   

BUILD_TYPE = debug