Ubuntu: How do you installing FLTK?
 

Hey guys how do you install FLTK?
I downloaded a zip folder from Softpedia (fltk- 1.1.9-source.tar.gz

But I don't know what to do from there.
Any help?
Thanks.

Did you unzip the fltk-1.1.9-source.tar.gz file and did you find README and INSTALL files in the directory created during unzipping ?

Hey thanks, but now I have another problem.
When it's running through the terminal, there's a error that said no X11 library found or something like that.

Where can I get X11 library?

Before you continue any further:

1. Do you in general know how to build from sources under a UNIX-like system ?
2. Have you ever heard the "dev package" or "development package" term ?
3. Why did you decide to build from sources and install rather than just use a precooked package for your distro and install it ?

I have a strong feeling that the problem you are facing is not fltk-specific.

'sudo apt-get install libfltk1.1-dev libfltk1.1'
will install the two "fltk" packages.

( Or use Synaptic, the package manager )
....
'libx11-6' is installed. Required package for
compiling is 'libx11-dev'

When "configure" asks for <package>,
it always means <package-dev>
....

Thank you all, everything's good now.