<p>The C compiler identification is GNU 4.8.1<br>
The CXX compiler identification is GNU 4.8.1<br>
Check for working C compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe<br>
Check for working C compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe -- works<br>
Detecting C compiler ABI info<br>
Detecting C compiler ABI info - done<br>
Detecting C compile features<br>
Detecting C compile features - done<br>
Check for working CXX compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/g++.exe<br>
Check for working CXX compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/g++.exe -- works<br>
Detecting CXX compiler ABI info<br>
Detecting CXX compiler ABI info - done<br>
Detecting CXX compile features<br>
Detecting CXX compile features - done<br>
Checking for C++11 compiler<br>
Checking for C++11 compiler - available<br>
Looking for backtrace<br>
Looking for backtrace - not found<br>
Could NOT find Backtrace (missing:  Backtrace_LIBRARY Backtrace_INCLUDE_DIR) <br>
CMake Error at CMake/FindArmadillo.cmake:327 (message):<br>
  ARMADILLO_INCLUDE_DIR-NOTFOUND/armadillo_bits/config.hpp not found! Cannot<br>
  determine what to link against.<br>
Call Stack (most recent call first):<br>
  CMakeLists.txt:113 (find_package)</p>

<p>why this is happening?</p>

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