一，下载源码

cd  hardware/libhardware/tests

git clone https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git

二， 在 i2c-tools 目录添加 Android.mk 编译文件

LOCAL_PATH:= $(call my-dir)
 
################### i2c-tools #########################
include $(CLEAR_VARS)
 
LOCAL_MODULE := i2c-tools
 
LOCAL_SRC_FILES := \
    tools/i2cbusses.c \
    tools/util.c \
    lib/smbus.c
 
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
#LOCAL_CFLAGS := -g -Wall -Werror -Wno-unused-parameter
include $(BUILD_STATIC_LIBRARY)
 
################### i2cdetect #########################
include $(CLEAR_VARS)
 
 
LOCAL_MODULE:=i2cdetect
 
LOCAL_SRC_FILES:= \
    tools/i2cdetect.c
    
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
LOCAL_SHARED_LIBRARIES:= \
    libc
LOCAL_STATIC_LIBRARIES := \
    i2c-tools
    
LOCAL_CPPFLAGS += -DANDROID
 
include $(BUILD_EXECUTABLE)
 
#################### i2cget ###########################
include $(CLEAR_VARS)
 
 
LOCAL_MODULE:=i2cget
 
LOCAL_SRC_FILES:= \
    tools/i2cget.c
    
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
LOCAL_SHARED_LIBRARIES:= \
    libc
LOCAL_STATIC_LIBRARIES := \
    i2c-tools
    
LOCAL_CPPFLAGS += -DANDROID
 
include $(BUILD_EXECUTABLE)
 
##################### i2cset ##########################
include $(CLEAR_VARS)
 
LOCAL_MODULE:=i2cset
 
LOCAL_SRC_FILES:= \
    tools/i2cset.c
    
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
LOCAL_SHARED_LIBRARIES:= \
    libc
LOCAL_STATIC_LIBRARIES := \
    i2c-tools
 
LOCAL_CPPFLAGS += -DANDROID
 
include $(BUILD_EXECUTABLE)
 
##################### i2cdump #########################
include $(CLEAR_VARS)
 
 
LOCAL_MODULE:=i2cdump
 
LOCAL_SRC_FILES:= \
    tools/i2cdump.c
    
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
LOCAL_SHARED_LIBRARIES:= \
    libc
LOCAL_STATIC_LIBRARIES := \
    i2c-tools
 
LOCAL_CPPFLAGS += -DANDROID
 
include $(BUILD_EXECUTABLE)
 
################### i2ctransfer #######################
include $(CLEAR_VARS)
 
LOCAL_MODULE:=i2ctransfer
 
LOCAL_SRC_FILES:= \
    tools/i2ctransfer.c
    
LOCAL_C_INCLUDES += \
    $(LOCAL_PATH) \
    $(LOCAL_PATH)/include
 
LOCAL_SHARED_LIBRARIES:= \
    libc
LOCAL_STATIC_LIBRARIES := \
    i2c-tools
 
LOCAL_CPPFLAGS += -DANDROID
 
include $(BUILD_EXECUTABLE)

三， 在上面目录增加编译链接

四，编译生成工具软件