如何列出非本地二进制文件的库依赖关系？ [英] How to list library dependencies of a non-native binary?

问题描述

在为本地平台开发时，我可以使用ldd列出所有共享库（.so文件），我构建的二进制可执行文件将在启动时尝试加载。但是在交叉编译时，我不知道如何获得相同的信息。 ldd 不是普通的binutils工具，例如 strip 或 ar gcc 一起构建，用于交叉编译，相反，它是一个神秘的shell脚本，显然只能在本地平台上运行。

When developing for native platform, I can use ldd to list all the shared libraries (.so files) a binary executable I build will try to load upon start-up. But when cross-compiling, I don't know how to get the same information. The ldd is not a normal binutils utility, like strip or ar, that can be built alongside gcc for cross compiling, but instead, it is a cryptic shell script that apparently can only run on native platform.

因此，使用跨目标binutils工具，是否有任何方法可以获得外部二进制文件的动态链接依赖项列表？

So, using the cross-target binutils tools, is there any way to get a list of the dynamically linked dependency for of a foreign binary?

推荐答案

是否有任何方法可以获取外部二进制文件的动态链接依赖列表

您可以轻松地列出二进制文件的 direct 依赖关系：

You can list direct dependencies of a binary easily enough:

readelf -d a.out | grep NEEDED

 0x0000000000000001 (NEEDED)             Shared library: [librt.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]

我知道无法递归地继续获得完整列表（如 ldd 确实）。您必须手动重复每个需要库的流程。

I know of no way to recursively continue this to get the full list (as ldd does). You'll have to repeat the process for every NEEDED library by hand.

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