Building helloworld.elf

[PrsMittal]

Hey! I was trying to build an EbbRT dependent application, so I followed the instructions given in https://github.com/SESA/EbbRT/wiki/Build-Tutorial-Notes. While building the helloworld application, I got this error:

-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
System is unknown to cmake, create:
Platform/EbbRT to use this system, please send your config file to cmake@www.cmake.org so it can be added to cmake
Your CMakeCache.txt file was copied to CopyOfCMakeCache.txt. Please send that file to cmake@www.cmake.org.
CMake Error at CMakeLists.txt:2 (project):
The CMAKE_C_COMPILER:

/home/user/ebbrt-sysroot/ebbrt/usr/bin/x86_64-pc-ebbrt-gcc

is not a full path to an existing compiler tool.

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.

CMake Error at CMakeLists.txt:2 (project):
The CMAKE_CXX_COMPILER:

/home/user/ebbrt-sysroot/ebbrt/usr/bin/x86_64-pc-ebbrt-g++

is not a full path to an existing compiler tool.

Tell CMake where to find the compiler by setting either the environment
variable "CXX" or 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.

-- Configuring incomplete, errors occurred!

If I understood it correctly this means that cmake is trying to find a cross compiler binary "x86_64-pc-ebbrt-gxx" as specified by ebbrt.cmake. However, during the build, no such file was created.
Any pointers on how to solve this would be highly appreciated.

[handong32]

You should check out this link instead, we updated the building steps: https://github.com/SESA/EbbRT/wiki/Build-Tutorial-(DRAFT)

After you run this line, the toolchain should be built
make -j -f ../EbbRT/toolchain/Makefile

You should make sure the base libraries you have installed on your Linux to be same as specified in the Build-Tutorial-Notes, else you'll likely hit building errors.

The easiest way to test out EbbRT will probably be using docker, we have a container image that has cross compiler built already, check it out here: https://hub.docker.com/r/ebbrt/seuss