Build_Dll_For_Linux_ARM64 job fails

[Miloslav]

When trying to execute azure-pipelines.yml Build_Dll_For_Linux_ARM64 fails (all other jobs are fine).

This is the cause:

Starting: CMake
==============================================================================
Task         : CMake
Description  : Build with the CMake cross-platform build system
Version      : 1.212.0
Author       : Microsoft Corporation
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/build/cmake
==============================================================================
/usr/local/bin/cmake -DCMAKE_TOOLCHAIN_FILE=../buildTools/linux-arm64-cross.cmake -DCMAKE_BUILD_TYPE=Release ..
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:3 (project):
  The CMAKE_C_COMPILER:

    /usr/bin/aarch64-linux-gnu-gcc-9

  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:3 (project):
  The CMAKE_CXX_COMPILER:

    /usr/bin/aarch64-linux-gnu-g++-9

  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!
##[error]The process '/usr/local/bin/cmake' failed with exit code 1
##[error]CMake failed with error: The process '/usr/local/bin/cmake' failed with exit code 1
Finishing: CMake