Compiler version in C++ vs pre-compiled C libraries

Question

I have a code that uses std=c++20.

I want to use a C library that was build with old gcc version.

Should I recompile the C library using the same compiler ?

If no, how could you judge that the 2 ABIs are compatible?

Recompiling with the current compiler is a good idea anyway. — Jabberwocky
– Jabberwocky, Commented Oct 6, 2021 at 15:07
library call standards are same in 90's elf32. call conventions are invented in 80's — Алексей Неудачин
– Алексей Неудачин, Commented Oct 6, 2021 at 15:10

anton-tchekov · Accepted Answer · 2021-10-06 15:59:35Z

1

There should be no problem using the library as it is. Don't forget to add extern "C" around the function prototypes.

answered Oct 6, 2021 at 15:02

anton-tchekov

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1 Comment

I hope you mean "function prototypes" and not "header files".