Greetings. My distribution is Slackware12.2 (with KDE3.5.10) and I'm trying to compile and install KDE4 svn to /opt/kde4 and everything is ok, but when it comes to kdegraphics it's a headbang. I have Qt 4.5.0 installed at /opt/kde4/qt-4.5.0 and I have my PATH set in my .bash_profile and .bashrc. So, kdegraphics needs QtCrypto or libCQL. I compiled and installed that with prefix /opt/kde4/qt-4.5.0 but when initiating make it gives me an error it couldn't find QtCrypto and just returns error 2. I've got all libQCA (The QtCrypto and other includes) in /opt/kde4/qt-4.5.0/include but make doesn't search there. i've spent hours google-ing to figure out how to add /opt/kde4/qt-4.5.0 to the list of include directories but I couldn't find anything that gives me the clue how to do that... If anyone has any idea, I'd appretiate it Thanks!

If you have this : /opt/kde4/qt-4.5.0/lib ,

try adding /opt/kde4/qt-4.5.0/lib to /etc/ld.so.conf
... and run # ldconfig .

Then I guess, that includes will be looked for in
/opt/kde4/qt-4.5.0/include/ too. ??

Or use a 'configure' option like :
--with-extra-includes=/opt/kde4/qt-4.5.0/include/
......

It's already in my ld.so.conf, ran ldconfig a dozen times already, but it still didn't care about the include directory...
I can't use a configure option, it's cmake and not configure, and the cmake flags didn't work out either. Then I got pissed off, purged /opt/kde4 (hail to the rm -rf :P ) and made a new directory /kde in my root drive and installed everything, qt4.5, libqca and other stuff with prefix /kde and everything is working fine. Right now I'm writing from my new kde4 and still KDE3 is working fine with a few issues though, but I can live with that, I had to remove my ~/.kde dir but that's no big deal
Thanks for the reply, knudfl! I appretiate it
[edit]
Oh, forgot to mention, edited my bash_profile and basrc to include /kde/bin to the PATH and /kde/lib/pkgconfig to PKG_CONFIG_PATH and added /kde/lib to ld.so.conf