linking jsoncpp on Ubuntu

Question

I try to use jsoncpp library with c++ on Ubuntu. I compiled the code and built the library with scons. Now I can compile a simple programme:

#include "json/json.h"
#include <json/value.h>
#include <json/writer.h>
int main()
{
    return 0;
}

I use this command to compile:

g++ test.cpp -usr/lib/libjson_linux-gcc-4.8_libmt

I conclude that the compiler knows where to find the library. The problem comes when I declare a json object:

Json::Value root;

Then I have this error message: undefined reference to « Json::Value::Value(Json::ValueType) »

How can I fix this problem?

You say you build library with scons. Did you build jsoncpp library yourself. Maybe compiled does not know where to search your custom library — Sandro
– Sandro, Commented Apr 8, 2015 at 16:09
I did build the library myself and then I copied the file libjson_linux-gcc-4.8_libmt in /usr/lib. I tried with -L/usr/lib -ljsoncpp And it works ! Thanks — jfjobidon
– jfjobidon, Commented Apr 9, 2015 at 16:32

Eka · Accepted Answer · 2016-07-23 05:47:22Z

1

For CodeBlocks (Ubuntu 14.04)

I have faced same problem in my codeblocks IDE after installing jsconcpp. This is how I rectified my problem.

Got to project>Build Options>linker settings and in the link libraries add jsconcpp and click ok

answered Jul 23, 2016 at 5:47

Eka

15.2k43 gold badges146 silver badges221 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1