- 静态和-Static -libstdc＆＃x2b;＆＃x2B;之间的区别在GCC中

发布于 2025-01-21 22:17:04 字数 650 浏览 3 评论 0原文

-Static添加到最终的二进制输出中，-Static-LibstDC ++不添加什么其他内容？

我尝试了以下程序：

#include <iostream>


int main( )
{
    std::cout << "What does -static do that -static-libstdc++ doesn't do?\n";
}

没有为链接时间指定的任何这些选项，生成的输出仅为 〜17 kb 。但是，通过指定-static-libstdc ++它变成 〜1.3 Mb 。如果使用-static，它将变成 〜2.4 Mb 。 static标志正在添加什么，该标志会导致后两种形式的大小差异很大？如果仅在链接阶段指定-static-libstdc ++，在运行时可能会影响哪些内容？

现在，如果某人想在Ubuntu（v18.04及以后）构建一个小程序，那么哪一个更合适？

原文

What other stuff does -static add to the final binary output that -static-libstdc++ does not add?

I checked the excellent answer for this question but it doesn't address this particular question that I have.

I tried the following program:

#include <iostream>


int main( )
{
    std::cout << "What does -static do that -static-libstdc++ doesn't do?\n";
}

Without any of these options specified for link-time, the generated output is only ~17 KB. However, by specifying -static-libstdc++ it becomes ~1.3 MB. And if -static is used instead, it becomes ~2.4 MB. What is being added by the -static flag that causes the latter two forms to have such a huge difference in size? And which things can be affected at runtime if only the -static-libstdc++ is specified at the linking stage?

Now which one is more suitable if someone wants to build a small program that can be run on Ubuntu (v18.04 and later)?

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青春如此纠结 2025-01-28 22:17:04

-Static-暗示-Static-Libgcc和-static-libstdc ++，以及所有其他库在静态（如果可能的话）上链接到静态上。

您可以看到使用ldd

Linux中的依赖项

$ g++ -static-libstdc++ -static-libgcc test.cpp
$ ldd a.out
        linux-vdso.so.1 (0x00007fff9a7a9000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5122c90000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f5122fb7000)
$ g++ -static test.cpp
$ ldd a.out
        not a dynamic executable

-static- implies -static-libgcc and -static-libstdc++ as well as that all other libraries are linked in, if possible, statically.

You can see what doesn't get in using ldd

Dependency resolution in Linux

$ g++ -static-libstdc++ -static-libgcc test.cpp
$ ldd a.out
        linux-vdso.so.1 (0x00007fff9a7a9000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5122c90000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f5122fb7000)
$ g++ -static test.cpp
$ ldd a.out
        not a dynamic executable

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