-- Configuring incomplete, errors occurred!

edit

I have used catkin_make successfully in the past but now whenever i try to use catkin_make i get the following error( as you can see i just created this directory named "delete", but catkin_make is still not working (with this directory or any other directory newly or previously created)):

asaad@VAIO:~$ mkdir -p ~/delete/src
asaad@VAIO:~$ cd delete/src/
asaad@VAIO:~/delete/src$ catkin_init_workspace n
usage: catkin_init_workspace [-h] [workspace]
catkin_init_workspace: error: Workspace "/home/asaad/delete/src/n" does not exist
asaad@VAIO:~/delete/src$ catkin_init_workspace 
Creating symlink "/home/asaad/delete/src/CMakeLists.txt" pointing to "/opt/ros/hydro/share/catkin/cmake/toplevel.cmake"
asaad@VAIO:~/delete/src$ cd ~/delete/
asaad@VAIO:~/delete$ catkin_make
Base path: /home/asaad/delete
Source space: /home/asaad/delete/src
Build space: /home/asaad/delete/build
Devel space: /home/asaad/delete/devel
Install space: /home/asaad/delete/install
####
#### Running command: "cmake /home/asaad/delete/src -DCATKIN_DEVEL_PREFIX=/home/asaad/delete/devel -DCMAKE_INSTALL_PREFIX=/home/asaad/delete/install" in "/home/asaad/delete/build"
####
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Using CATKIN_DEVEL_PREFIX: /home/asaad/delete/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/hydro
-- This workspace overlays: /opt/ros/hydro
-- Found PythonInterp: /usr/bin/python (found version "2.7.3")
-- Using PYTHON_EXECUTABLE: /usr/bin/python
-- Python version: 2.7
-- Using Debian Python package layout
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/asaad/delete/build/test_results
-- Looking for include files CMAKE_HAVE_PTHREAD_H
-- Looking for include files CMAKE_HAVE_PTHREAD_H - found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE 
-- Found gtest sources under '/usr/src/gtest': gtests will be built
-- catkin 0.5.90
-- Found Git: /usr/bin/git 
-- Boost version: 1.46.1
-- Found the following Boost libraries:
--   python
--   thread
--   system
-- Found PythonLibs: /usr/lib/libpython2.7.so 
CMake Error: File /home/asaad/delete/src/package.xml does not exist.
CMake Error at /opt/ros/hydro/share/catkin/cmake/stamp.cmake:10 (configure_file):
  configure_file Problem configuring file
Call Stack (most recent call first):
  /opt/ros/hydro/share/catkin/cmake/catkin_package_xml.cmake:61 (stamp)
  /opt/ros/hydro/share/catkin/cmake/catkin_package_xml.cmake:39 (_catkin_package_xml)
  /opt/ros/hydro/share/catkin/cmake/catkin_package.cmake:95 (catkin_package_xml)
  CMakeLists.txt:6 (catkin_package)


CMake Error at /opt/ros/hydro/share/catkin/cmake/catkin_package.cmake:112 (message):
  catkin_package() 'catkin' must be listed as a buildtool dependency in the
  package.xml
Call Stack (most recent call first):
  /opt/ros/hydro/share/catkin/cmake/catkin_package.cmake:98 (_catkin_package)
  CMakeLists.txt:6 (catkin_package)


-- Configuring incomplete, errors occurred!
Invoking "cmake" failed
asaad@VAIO:~/delete$