CMake Error at CMakeLists.txt:20 (enable_language)

[ali77124]

Hello, good time!

I'm going to run PULPino on ubuntu 18.04 and i used ri5cy_gnu_toolchain for this.
But when using the ./cmake_configure.riscv.gcc.sh command, I get the following error:

C compiler identification is unknown
System unknown to cmake, create:
Platform/Linux-CXX To use this system, please send your configuration file to [email protected] so it can be added to cmake.
Your CMakeCache.txt file was copied to CopyOfCMakeCache.txt. Please send that file to [email protected].
CMake error in CMakeLists.txt:20 (enable_language):
No CMAKE_C_COMPILER found.

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

The configuration is incomplete, errors have occurred!
See also "/home/ali/pulpino/sw/build/CMakeFiles/CMakeOutput.log".
See also "/home/ali/pulpino/sw/build/CMakeFiles/CMakeError.log".

Also, the PATH variable related to ri5cy as below in the bashrc file. I added:
export PATH=/home/ri5cy_gnu_toolchain/install/bin:$PATH

Thanks in advance for your help!