How to fix: "/usr/bin/ld: cannot find -lgdk_pixbuf-2.0..."

[AlnsLazarus]

Hello all:
I have Linux mint 13, KDE.
Downloaded and installed Lazarus. So i was very happy , but in my very first project, received
the following while i was trying to run it :
"usr/bin/ld: warning: link.res contains output sections; did you forget -T?
/usr/bin/ld: cannot find -lgdk_pixbuf-2.0
/usr/bin/ld: cannot find -lgtk-x11-2.0
/usr/bin/ld: cannot find -lgdk-x11-2.0
/usr/bin/ld: cannot find -lgobject-2.0
/usr/bin/ld: cannot find -lglib-2.0
/usr/bin/ld: cannot find -lgthread-2.0
/usr/bin/ld: cannot find -lgmodule-2.0
/usr/bin/ld: cannot find -lpango-1.0
/usr/bin/ld: cannot find -lcairo
/usr/bin/ld: cannot find -latk-1.0
project1.lpr(20,1) Error: Error while linking
project1.lpr(20,1) Fatal: There were 1 errors compiling module, stopping"

So, What is happening here?

[a.atalla]

you need to install  libgtk2.0-dev

[AlnsLazarus]

Well, thanks a lot.
But actually, i had to install:
libgtk-3-0           
libgtk-3-dev         
libgtk2.0-dev        

and (im not sure):
libgtk-3-0-dbg
libgtk2.0-0-dbg
An afterwards, it worked. 

[Leledumbo]

You should only need libgtk2.0-dev, the -dbg and gtk3 ones are simply unused (gtk3 widgetset is still at initial stage).

[AlnsLazarus]

Well, thanks:

I have to say "make it run first, realize how you did that later", 
because when i first tried to install
        libgtk2.0-dev   
it required
   libgtk2.0-0   
but, in my system, i had to install
   libgtk-3-0   
because libgtk2.0-0 was old.   (i have kde 4.9, linux mint 13,  ... and yes: i dont know why);
after that, i remember that got something like:
"
/usr/bin/ld: cannot find -lpango-1.0
/usr/bin/ld: cannot find -lcairo
/usr/bin/ld: cannot find -latk-1.0
project1.lpr(20,1) Error: Error while linking
project1.lpr(20,1) Fatal: There were 1 errors compiling module, stopping"
so... believe me, i did the other stuff and it is working now