默认情况下，gcc是否链接到静态或动态标准库？

Question

Ex:

gcc source-file

I think it is dynamic but I'm not sure. Is it system dependent?

Answer 1

It is technically system dependent, but on most systems you're likely to develop for, the answer is "dynamic".

A few systems (mostly very old, embedded, or otherwise specialized) do not support dynamic linking at all , but most developers are unlikely to care about those systems. On those systems, the linker will of course default to linking statically (unless whoever did the port screwed up :)).

Some systems also do not offer static versions of their standard libraries, so you can't statically link them.

On many systems (especially any typical Linux system), you probably have a utility called ldd . You can use ldd <file> to check if it's dynamically linked to the standard library (assuming you know for sure what the library is called, it's usually libc though).

Answer 2

Most linkers prefer dynamic libraries to static when linking, but normally they have flags to explicitly specify the behaviour. It's definitely system dependent - check your linker documentation for details.