Link custom library to existing program in C++

Question

I've written a simple memory management program (which overwrites malloc, realloc...) in C++ and created shared library (.so file) from it. Now I want to test it with an existing program, for this I have chosen CenterIM5 and compiled it. How do I link the library to CenterIM5, so that it uses my functions?

do you work with cmake or make?

Soeren
– Soeren

2017-01-30 17:22:52 +00:00
Commented Jan 30, 2017 at 17:22 — Soeren
– Soeren, Commented Jan 30, 2017 at 17:22
I'm calling make.

user3742929
– user3742929

2017-01-30 17:27:26 +00:00
Commented Jan 30, 2017 at 17:27 — user3742929
– user3742929, Commented Jan 30, 2017 at 17:27

yugr · Accepted Answer · 2017-01-30 17:41:53Z

2

The usual way is to link to your library at runtime by running it with LD_PRELOAD set:

LD_PRELOAD=path/to/so ./app args

In this case you don't need to rebuild anything.

answered Jan 30, 2017 at 17:41

yugr

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2 Comments

user3742929 Over a year ago

With what would i replace ./app? Just centerim doesn't work.

yugr Over a year ago

Well, that depends on the app you want to run (I don't know much about Centerim). Basically you take command line and prepend LD_PRELOAD=... to it.

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