This version of the OpenCL Host API C++ bindings is deprecated, please use cl2.hpp instead

[DennisFaucher]

$ gcc -Wall -Wextra -D CL_TARGET_OPENCL_VERSION=100 hello_world.cpp -o helloworld -lOpenCL
In file included from hello_world.cpp:1:
/usr/include/CL/cl.hpp:155:110: note: #pragma message: This version of the OpenCL Host API C++ bindings is deprecated, please use cl2.hpp instead.
155 | #pragma message("This version of the OpenCL Host API C++ bindings is deprecated, please use cl2.hpp instead.")
| ^
hello_world.cpp: In function ‘int main()’:
hello_world.cpp:76:52: error: ‘CL_MEM_HOST_READ_ONLY’ was not declared in this scope; did you mean ‘CL_MEM_READ_ONLY’?
76 | cl::Buffer memBuf(context, CL_MEM_WRITE_ONLY | CL_MEM_HOST_READ_ONLY, sizeof(buf));
| ^~~~~~~~~~~~~~~~~~~~~
| CL_MEM_READ_ONLY