[SOLVED] how to link a c++ library to a c++ source code when it has a specific linker script to compile?

Issue

i have these files:-

/lib
    kernel.hpp
    kernel.cpp
main.cpp

when i use

gcc -m32 -c main.cpp -lstdc++ -o main.o -llib/kernel.hpp

it says

[function name]([type of argument 1], [type of argument 2]) is not declared in this scope

how to fix?

Solution

I started writing a comment, but got to be too long, so we'll make it an answer instead. I don't think it in fact will answer your question, but it may point you in the right direction.

Let's clear up a misconception, c++ is not a superset of c; there are c constructs that c++ does not support. If your code is c++, you need to compile it with a c++ compiler. The problems you've been describing all indicate that compilation is failing; you're not at the point where the linker is involved. The compile command you provided in your question had a -c flag, which tells the compiler to stop after the compilation step - so there's no point in having a -lstd++ flag in addition. For the compiler to find kernel.hpp you need a -I flag which indicates the directory where kernel.hpp can be found. That's what I was suggesting in my first comment.

To sum up, as shown in the original question, you're using the wrong compiler and the wrong flags for what you want to do.

Answered By - user888379