catkin_make error in hydro

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I'm following the building packages tutorial, but getting stuck at catkin_make on a brand new catkin workspace.

$ cd ~/catkin_ws $ catkin_make gives:

-- Using CATKIN_DEVEL_PREFIX: /home/rufus/catkin_ws/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/hydro
-- This workspace overlays: /opt/ros/hydro
-- 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/rufus/catkin_ws/build/test_results
-- Found gtest sources under '/usr/src/gtest': gtests will be built
-- catkin 0.5.86
/home/rufus/catkin_ws/devel/env.sh: 1: /opt/ros/hydro/etc/catkin/profile.d/05.catkin_make.bash: Syntax error: "(" unexpected
Traceback (most recent call last):
  File "/home/rufus/catkin_ws/build/catkin_generated/generate_cached_setup.py", line 21, in <module>
    code = generate_environment_script('/home/rufus/catkin_ws/devel/env.sh')
  File "/opt/ros/hydro/lib/python2.7/dist-packages/catkin/environment_cache.py", line 61, in generate_environment_script
    output = subprocess.check_output([env_script, sys.executable, '-c', python_code])
  File "/usr/lib/python2.7/subprocess.py", line 544, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['/home/rufus/catkin_ws/devel/env.sh', '/usr/bin/python', '-c', 'import os; print(dict(os.environ))']' returned non-zero exit status 2
CMake Error at /opt/ros/hydro/share/catkin/cmake/safe_execute_process.cmake:11 (message):
  execute_process(/usr/bin/python
  "/home/rufus/catkin_ws/build/catkin_generated/generate_cached_setup.py")
  returned error code 1
Call Stack (most recent call first):
  /opt/ros/hydro/share/catkin/cmake/all.cmake:178 (safe_execute_process)
  /opt/ros/hydro/share/catkin/cmake/catkinConfig.cmake:20 (include)
  CMakeLists.txt:52 (find_package)


-- Configuring incomplete, errors occurred!
Invoking "cmake" failed

Apparently something goes wrong in generating the environment. Same problem happens when using the zshell instead of bash.

I'm using: ROS Hydro in an ubuntu virtual machine GNU bash, version 4.2.25(1)-release (i686-pc-linux-gnu) catkin 0.5.86 cat /proc/version: Linux version 3.2.0-60-generic-pae (buildd@allspice) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #91-Ubuntu SMP Wed Feb 19 04:14:56 UTC 2014

Any suggestions?

Further information, in reaction to comment 1:

I work with a clean workspace, no packages. ROS Hydro was already installed in my virtual machine. After "sudo rosdep init" and "rosdep update", that seem to work properly, I generate my catkin workspace:

mkdir -p catkin_ws/src
cd ~/catkin_ws/src
catkin_init_workspace
source /opt/ros/hydro/setup.bash
cd ~/catkin_ws
catkin_make                       # do make on just clean catkin workspace

This gives the error as given above. Also after starting roscore the catkin_make gives the same error. The package catkin can be found:

$ rospack find catkin               # gives:
/opt/ros/hydro/share/catkin

However, the packages catkin_pkg or catkin-pkg cannot be found.