catkin_make error

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dump of console text:

$ catkin_make
Base path: /home/srikar/catkin_ws
Source space: /home/srikar/catkin_ws/src
Build space: /home/srikar/catkin_ws/build
Devel space: /home/srikar/catkin_ws/devel
Install space: /home/srikar/catkin_ws/install
Creating symlink "/home/srikar/catkin_ws/src/CMakeLists.txt" pointing to "/opt/ros/kinetic/share/catkin/cmake/toplevel.cmake"
####
#### Running command: "cmake /home/srikar/catkin_ws/src -DCATKIN_DEVEL_PREFIX=/home/srikar/catkin_ws/devel -DCMAKE_INSTALL_PREFIX=/home/srikar/catkin_ws/install -G Unix Makefiles" in "/home/srikar/catkin_ws/build"
####
-- The C compiler identification is unknown
-- The CXX compiler identification is GNU 5.4.0
CMake Error in CMakeLists.txt:
  No CMAKE_C_COMPILER could be found.

  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.


-- 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
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring incomplete, errors occurred!
See also "/home/srikar/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/srikar/catkin_ws/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed