UnsatisfiedLinkError libSerialPort

解决办法：
在Android.mk文件中加入：LOCAL_LDFLAGS += -fPIC，重新编译Google开源库的源码，生成.so库

#
# Copyright 2009 Cedric Priscal
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License. 
#
 
LOCAL_PATH := $(call my-dir)
 
include $(CLEAR_VARS)
 
TARGET_PLATFORM := android-3
LOCAL_MODULE    := serial_port
LOCAL_SRC_FILES := SerialPort.c
LOCAL_LDLIBS    := -llog
 
#加入如下信息
LOCAL_LDFLAGS += -fPIC
 
include $(BUILD_SHARED_LIBRARY)

重新build