C - Using shared library

Question

I have made makefile which is creating shared library of two C code files (I used gcc). Makefile is also creating runnable main C file. Now I need to know how to tell main C file to use my shared library - because I need to use functions which are already contained in code files in shared library. Thanks for the help.

Is this question about adding shared libraries to the linker, or about using functions from shared libraries in your code? — arc_lupus, Nov 19 '14 at 13:41
Is there special reason to make library? Why not simply include the source in each program? — i486, Nov 19 '14 at 13:44

Sourav Ghosh · Accepted Answer · 2014-11-19T13:48:28.057

1

#include the header file containing the declaration of the function(s) you want to use in your main file.
link with your shared library using -L/path/to/libraries abc.c -l<yourLIb>. [Assuming your libary name is lib<yourLIb>.so]

^{Note: You can find some good reads here.}

edited Nov 19 '14 at 13:48

answered Nov 19 '14 at 13:43

Sourav Ghosh

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Everything is in the same folder, so do I use -L. "main fle name" -l ??? – ondrousn Nov 19 '14 at 14:00
@ondrousn yep. did you give it a try yet? – Sourav Ghosh Nov 19 '14 at 14:05

score 0 · Answer 2 · answered Nov 19 '14 at 13:42

0

Define function prototypes in header .h file(s). And add library name to linker parameters.

answered Nov 19 '14 at 13:42

i486

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C - Using shared library

2 Answers2