Whatever i try seems to be useless.
I compiled it from source, i installed it via slackbuild but it didn't work.
When i go imlib-config --version it shows me the old one, and when i try to install giblib it tells me that imlib2 is not installed.

I watched the output from the installing of imlib2 and i realized something's wrong: there are several suspicious warnings :
libtool: link: warning: `/usr/X11R6/lib/libfreetype.la' seems to be moved
libtool: link: warning: `/usr/X11R6/lib/libX11.la' seems to be moved
libtool: link: warning: `/usr/X11R6/lib/libXext.la' seems to be moved

I don't know why this happens. If anyone ever had similar problem, please help me. Thank you.

If imlib comes with Slack by default (which I believe it does) did you remove the older version first?? Or, upgrade the existing version with your newer version?

No, i didn't remove the old ver of imlib (which is 1.9.5), i just tried installing imli2 . Can you tell me how to delete the old version of imlib ?

You don't want to just "delete" it. You should create a proper Slackware package of your new version, and use:

upgradepkg OLDPKGNAME%NEWPACKAGENAME

to replace the original one with your new one.

Like:

shell# upgradepkg imlib2%/path/to/your/new/version-1.2.3-blah.tgz

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imlib and imlib2 are different things. Slack comes with imlib, not imlib2. So don't remove imlib. There's a SlackBuild for imlib2, have you tried that?

But i don't have a .tgz from imlib2, only slackbuild and source.
What to do now ? Or do you know where i can find .tgz from it ?

EDIT: BrianL yeah i tried it, no success.

Mind t hat imlib2 is different from imlib that comes with Slackware, so use
to find the imlib2 installed version.

Read this:
http://slackbuilds.org/howto/

bash: imlib2-config: command not found

It's not installed at all even after the make install, i'm sure in that.

@ bathory-- thanks for pointing that out! Important.

@ mutav --

1) slackbuild script will produce a .tgz or .txz slackpkg.
2) if you are upgrading an existing package, you either need to use `removepkg` on the old version first before installing your new version, OR use `upgradepkg` to upgrade the installed version, with your new version.

Not doing one of the above, will end up with a mix of two versions installed.

I did what GrapefruiTgirl said. It's okay now (i guess).