JNI开发-加载动态库错误之undefined symbol:
以下错误均是编译、链接正常，但是用System.load("XXX");加载libXXX.so库时会出现
1、Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/zhangyg/clibs/librdp.so: /home/zhangyg/clibs/libXXX.so: undefined symbol: SHA1_Init
连接动态库时加上-lssl，如下：
ld -shared -lssl $(OBJECTS) -o $(SHARED_LIB)
2、Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/zhangyg/clibs/librdp.so: /home/zhangyg/clibs/libXXX.so: undefined symbol: stat
生成动态库时不用ld，而用gcc，如下
gcc -shared -lssl $(OBJECTS) -o $(SHARED_LIB)
