Alright, im trying to install KDevelop, I have tried both source and RPM, the rpm tells me

Some package requested cannot be installed:
kdevelop-3.0.4-15mdk.i586 (due to unsatisfied autoconf2.5)
do you agree ?

i dunno how to fix that, i installed a new rpm for autoconf to try and fix it with no luck...then i tried the source, it prints out that it cant find the X includes and libraries (when i do a ./configure) then i tell it were they are, then it tells me

checking for X... libraries /usr/X11R6/lib, headers /isr/X11R6/include
checking for IceConnectionNumber in -lICE... no
checking for libXext... no
configure: error: We need a working libXext to proceed. Since configure
can't find it itself, we stop here assuming that make wouldn't find
them either.
[root@localhost kdevelop-3.1.2]#

What version(s) of autoconf do you have installed? autoconf2.5-2.59-6mdk is supplied somewhere on the mandrake 10.1 Official cd's.

The second problem refers to the Xorg development libraries. Installing the libxorg-x11-devel package should fix it.

if you can, use either the mandrake control centre's install software applet to search for the missing dependencies. Rey searching for whatever the ./configure script looks for and doesn't find, like libXext, using both the "file names" and "names" options, if it's not in one, it should be in the other.

alright well what you told me fixed that problem now i have another

checking for KDE... configure: error:
in the prefix, you've chosen, are no KDE headers installed. This will fail.
So, check this please and use another prefix!

where is kde located? i can set it, but i have no clue were it is!

Mandrake installs kde into /usr.
You need to make sure you have libkdecore4-devel and libqt3-devel installed.