Hi all!
There is an error :
cmake -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix` ..

-- The CXX compiler identification is unknown
CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
CMake Error at /usr/share/cmake-2.8/Modules/FindKDE4.cmake:98 (MESSAGE):
ERROR: cmake/modules/FindKDE4Internal.cmake not found in
/home/jaguar/.kde/share/apps;/usr/share/kubuntu-default-settings/kde4-profile/default/share/apps;/usr/share/kde4/apps
Call Stack (most recent call first):
CMakeLists.txt:3 (find_package)


CMake Warning (dev) in CMakeLists.txt:
No cmake_minimum_required command is present. A line of code such as

cmake_minimum_required(VERSION 2.

should be added at the top of the file. The version specified may be lower
if you wish to support older CMake versions for this project. For more
information run "cmake --help-policy CMP0000".
This warning is for project developers. Use -Wno-dev to suppress it.

-- Configuring incomplete, errors occurred!

Used Kubuntu 10.04, trying to install KTorrent 4.1.1, cmake is installed.

What I can do to fix it?
Thank you in advance

Install gcc and g++

Installing gcc and g++ gives no result. There was same error.

Try this:

sudo apt-get build-dep ktorrent