Can't run SDL2 executable by double-click - c

Question

Hello :)
I am presently learning SDL2, and I made several programs with it.
With these programs, when I double-click on the executable, the program launches, and everything is okay.
On the last program I made, it doesn't work anymore. With this one, I can only launch from terminal.
The exe has the permissions, so theres no reason for this to happen...
The only thing I changed is that the old generic function file I used (for things like "loadTextureFromImage()"...) to a dynamic library I created. Here's a link to the entire project (just a white window for now) -> RightHere.
I'm currently running Ubuntu 14.04.
If you have any idea on why it doesn't work just for THIS project, tell me please!
Thank you in advance ;)
PS : Here's a project that actually works -> RightHere
PS2 : The projects are in c
Okay, so I did ldd ./myprog, and the libraries linked are where I put them, in "${HOME}/lib". If I understood well, you are telling me that because these libraries aren't in "/usr/lib and so on...", they won't be found, and I should write a script. There's a little thing I forgot to tell : I had to add an environment variable in my .bashrc -> export LD_LIBRARY_PATH=${HOME}/lib, so that the libraries are found at compile-time. Because of what you said, I think that this variable is only loaded in terminals, isn't it? So I tried two scripts :
#!/bin/bash
LD_LIBRARY_PATH=$PWD
./myprog
(like you told) and
#!/bin/bash
LD_LIBRARY_PATH=${HOME}/lib
./myprog
(like I made in my .bashrc).
When I run them by double-clicking on them, neither work.
But, when I run them from terminal, only the second one works.
Thank you for the answer, hope it'll help...
EDIT : I confirm that the variable set in .bashrc are only loaded in terminals : I tested this script ->
#!/bin/bash
echo $LD_LIBRARY_PATH > Run.log
LD_LIBRARY_PATH=${HOME}/lib
echo $LD_LIBRARY_PATH >> Run.log
./Pong
and, when I run it from terminal, Run.log contains this :
/home/yohan/lib
/home/yohan/lib,
but, when I run it from double-click, it only contains
*newline*
/home/yohan/lib

Answer 1

Add export before your variable setting. – keltar
Okay so thank you VERY much, it works now, with this script :
#!/bin/bash
export LD_LIBRARY_PATH=${HOME}/lib
./myprog