title: Trying to execute the given command which is one of the steps to work with ESP8266 device on Kaa development platform, on Linux
body: <p>The code is :-</p>
  
  <pre><code>cmake .. -DCMAKE_TOOLCHAIN_FILE=../kaa/toolchains/esp8266.cmake -DKAA_PLATFORM=esp8266 -DCMAKE_BUILD_TYPE=MinSizeRel -DWITH_EXTENSION_CONFIGURATION=1 -DWITH_EXTENSION_EVENT=1 -DWITH_EXTENSION_LOGGING=1 -DWITH_EXTENSION_NOTIFICATION=1 -DWITH_EXTENSION_USER=1 -DWITH_EXTENSION_PROFILE=1 -DWITH_ENCRYPTION=OFF -DKAA_MAX_LOG_LEVEL=3
  </code></pre>
  
  <p>The output error messages I am getting is :-</p>
  
  <blockquote>
    <p>-- Toolchain path: ESP8266_TOOLCHAIN_PATH-NOTFOUND CMake Deprecation Warning at
    /usr/local/share/cmake-3.10/Modules/CMakeForceCompiler.cmake:69
    (message): The CMAKE_FORCE_C_COMPILER macro is deprecated. Instead
    just set CMAKE_C_COMPILER and allow CMake to identify the compiler.
    Call Stack (most recent call first): kaa/toolchains/esp8266.cmake:40
    (cmake_force_c_compiler) build/CMakeFiles/3.10.1/CMakeSystem.cmake:6
    (include) CMakeLists.txt:2 (project)</p>
    
    <p>--Default SDK location will be used: /opt/Espressif/esp-rtos-sdk CMake Error at CMakeLists.txt:2 (project): The CMAKE_C_COMPILER:</p>
    
    <p>ESP8266_TOOLCHAIN_PATH-NOTFOUND/bin/xtensa-lx106-elf-gcc is not a full
    path and was not found in the PATH.</p>
    
    <p>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.</p>
  </blockquote>