19:13 < yashu-seth> hello everyone

19:13 < yashu-seth> can someone please help me with a problem I am facing using mlpack

19:16 < yashu-seth> I followed the building mlpack from source on ubuntu guide

19:16 < yashu-seth> and everything installed correctly

19:18 < yashu-seth> but when I run a script that has #include <mlpack/core/dists/gamma_distribution.hpp> using g++ my_file.cpp -lmlpack -std=gnu++11

19:19 < yashu-seth> it says gamma_distribution.cpp:14:62: fatal error: mlpack/core/boost_backport/boost_backport_math.hpp: No such file or directory #include <mlpack/core/boost_backport/boost_backport_math.hpp>

19:19 < UtkarshGpta> Hey yashu-seth!

19:20 < yashu-seth> hello UtkarshGpta

19:20 < UtkarshGpta> You need to save your .cpp file inside the src folder that contains the folder mlpack.

19:21 < UtkarshGpta> I am assuming that you built the package using "make" command only.

19:22 < UtkarshGpta> Look at the file address "mlpack/core/dists/gamma_distribution.hpp"

19:22 < UtkarshGpta> Hope that solves the problem.

19:23 < yashu-seth> yes I used make

19:23 < yashu-seth> that fixes the problem

19:23 < yashu-seth> thanks

19:23 < UtkarshGpta> Cool! (y)

19:23 < yashu-seth> can you please tell me one more thing

19:24 < yashu-seth> Why do I have to keep this in the src folder?

19:25 < UtkarshGpta> Since from the program preprocessor directive you can see that the file to be included is "mlpack/core/dists/gamma_distribution.hpp"

19:26 < yashu-seth> Does this mean I have to keep my .cpp file in the git cloned folder if I want to see the latest changes that I have made during a PR change?

19:27 < UtkarshGpta> This file can be accessed by the same address if you save in the src folder. Or the other way round is use the gamma_distribution.hpp file in the same directory as your cpp code but keep in mind that you change the preprocessors accordingly.

19:28 < UtkarshGpta> Sadly, I can't say anything about that.. I am myself new to mlpack and figuring out the ways to contribute xD

19:29 < yashu-seth> Isn't there a way to specify the absolute path to look for "mlpack/core... " So that whenever I run a script from anywhere it looks for the desired mlpack folder?

19:29 < yashu-seth> Okay. Thanks a lot for your help.

19:30 < UtkarshGpta> I would love to know the answer to that. Wait for the moderators to reply :)

19:35 < zoq> You can specify the include and library path: g++ file.cpp -std=c++11 -I/home/marcus/src/mlpack/build/include/ -L/home/marcus/src/mlpack/build/ -lmlpack -larmadillo

19:42 < yashu-seth> Thanks zoq. But how to run my file so that I can see the latest changes of my PR?

19:47 < zoq> One way would be to link against your mlpack version, so rebuild mlpack ('make') and link against the modified version by specifying -I... and -L.... Another way would be to test your code by writing a simple unit test and use the mlpack_test executable to run your test.

20:52 < yashu-seth> Thanks a lot zoq. This should fix my problem.