请问大家ndk中LOCAL_SHARED_LIBRARIES LOCAL_LDLIBS什么区别

请问大家ndk中LOCAL_SHARED_LIBRARIES LOCAL_LDLIBS什么区别啊
我先是编译了一个.so 然后在此次编译的使用调用，请问用LOCAL_SHARED_LIBRARIES和LOCAL_LDLIBS什么区别啊，我用后者能编译通过，用前者不行呢，谢谢！！

1.共享库放在其他程序里面也应该可以调用   非共享库只能在本程序调用   
  
我想是这样的  不知道对不对

2.我用LOCAL_LDLIBS，编译的时候，提示：ndroideabi/bin/ld.exe: cannot find -lssl

3.我刚看了下源码，目录/framework/base/media/jni下有个Android.mk文件，里面有这样一句话:LOCAL_LDLIBS := -lpthread;这让我联想到了编译c线程程序时需要加编译参数-lpthread(引入libpthread.so共享库)。 LOCAL_LDLIBS := -lpthread作用也是引入libpthread.so库，也是不知两者区别在哪里，，求高手解答。。。。。

4.刚查了下，有的人讲：“由于要调用第三方库，所以用到了 LOCAL_LDLIBS” 。

5.in your case, in your “mydrdoid”, if you use:LOCAL_LDLIBS := -lskia” …then, libskia.so *need not* be rebuilt.
whereas, if you use:LOCAL_SHARED_LIBRARIES := libskia … then libskia.so
*will* be rebuilt if there are any changes in it’s dependencies.

6.RaviY
thanks for your explanation

also i found that LOCAL_LDLIBS in mydroid can only work for
HOST_SHARED_LIBS
but not for TARGET SHARED LIBS

thanks

On Nov 30, 11:52 am, RaviY <yend...@xxxxxx> wrote:
> Libraries that are linked via LOCAL_LDLIBS will not have any
> dependencies generated for them. So, typically, LOCAL_LDLIBS should be
> used when you don't want to or don't have the resources to build the
> specific library. So, if you are using a library provided by the NDK,
> you *technically* don't need to rebuild the provided libraries.
>
> So, in your case, in your "mydrdoid", if you use:
> LOCAL_LDLIBS := -lskia" ...then, libskia.so *need not* be rebuilt.
> whereas, if you use:
> LOCAL_SHARED_LIBRARIES := libskia ... then libskia.so *will* be
> rebuilt if there are any changes in it's dependencies.
>
> -Ravi
>
> On Nov 30, 7:20 am, allstars <allstars....@xxxxxxxxx> wrote:
>
> > hello
> > i would like to ask the differences between
> > LOCAL_SHARED_LIBRARIES and LOCAL_LDLIBS
>
> > for example , i try to link skia
>
> > in mydroid
>
> >  i need to use LOCAL_SHARED_LIBRARIES = libskia
>
> > but in NDK
> > i need to use LOCAL_LDLIBS = -lskia
>
> > so i am wondering what's the differences
> > and why do i need to two different ways for my Android.mk
>
> > thanks
>

FROM：http://www.eoeandroid.com/thread-45413-1-1.html