Error while running make eagle_default command

Hi I am trying to build my 1st code on snapdragon flight i followed the px4 dev guide http://dev.px4.io/starting-installing-linux.html but when i followed the next link for building code and run the command make eagle _default i got this error

anuj.gupta@CPU-291U:~/src/snapdragon/Firmware$ make eagle_default
– posix-eagle-default
– CMAKE_INSTALL_PREFIX: /usr
– cmake module path: /home/anuj.gupta/src/snapdragon/Firmware/cmake
CMake Error at cmake/cmake_hexagon/toolchain/Toolchain-arm-linux-gnueabihf.cmake:50 (message):
HEXAGON_SDK_ROOT not set
Call Stack (most recent call first):
/usr/share/cmake-3.2/Modules/CMakeDetermineSystem.cmake:98 (include)
CMakeLists.txt:215 (project)

CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER
CMake Error: Could not find cmake module file: /home/anuj.gupta/src/snapdragon/Firmware/build_posix_eagle_default/CMakeFiles/3.2.2/CMakeCXXCompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER
CMake Error: Could not find cmake module file: /home/anuj.gupta/src/snapdragon/Firmware/build_posix_eagle_default/CMakeFiles/3.2.2/CMakeCCompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_ASM_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_ASM_COMPILER
CMake Error: Could not find cmake module file: /home/anuj.gupta/src/snapdragon/Firmware/build_posix_eagle_default/CMakeFiles/3.2.2/CMakeASMCompiler.cmake
CMake Error at CMakeLists.txt:215 (project):
No CMAKE_CXX_COMPILER could be found.

Tell CMake where to find the compiler by setting the CMake cache entry
CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler
name if it is in the PATH.

CMake Error at CMakeLists.txt:215 (project):
No CMAKE_C_COMPILER could be found.

Tell CMake where to find the compiler by setting 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.

CMake Error at CMakeLists.txt:215 (project):
No CMAKE_ASM_COMPILER could be found.

Tell CMake where to find the compiler by setting the CMake cache entry
CMAKE_ASM_COMPILER to the full path to the compiler, or to the compiler
name if it is in the PATH.

CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_ASM_COMPILER not set, after EnableLanguage
– Configuring incomplete, errors occurred!
PX4 CONFIG: /home/anuj.gupta/src/snapdragon/Firmware/build_posix_eagle_default
make: *** /home/anuj.gupta/src/snapdragon/Firmware/build_posix_eagle_default: No such file or directory. Stop.
make: *** [posix_eagle_default] Error 2
anuj.gupta@CPU-291U:~/src/snapdragon/Firmware$

Thanks

Actually i found the soln of this.Thanks

e can you tell me how you solve the peoblem? i meet the same problem