Unable to compile hls model

[Sam-Nielsen-Dot]

When I try to run the first tutorial notebook from hls4ml-tutorial

The code stops at the hls_model.compile() line and shows the error

Writing HLS project
Done
build_lib.sh: line 14: g++: command not found
build_lib.sh: line 15: g++: command not found
build_lib.sh: line 16: g++: command not found
---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
Input In [13], in <cell line: 1>()
----> 1 hls_model.compile()
      2 X_test = np.ascontiguousarray(X_test)
      3 y_hls = hls_model.predict(X_test)

File ~/anaconda3/envs/hls4ml-tutorial/lib/python3.8/site-packages/hls4ml/model/hls_model.py:546, in HLSModel.compile(self)
    544         dlclose_func.restype = ctypes.c_int
    545         dlclose_func(self._top_function_lib._handle)
--> 546     self._top_function_lib = ctypes.cdll.LoadLibrary(lib_name)
    547 finally:
    548     os.chdir(curr_dir)

File ~/anaconda3/envs/hls4ml-tutorial/lib/python3.8/ctypes/__init__.py:451, in LibraryLoader.LoadLibrary(self, name)
    450 def LoadLibrary(self, name):
--> 451     return self._dlltype(name)

File ~/anaconda3/envs/hls4ml-tutorial/lib/python3.8/ctypes/__init__.py:373, in CDLL.__init__(self, name, mode, handle, use_errno, use_last_error, winmode)
    370 self._FuncPtr = _FuncPtr
    372 if handle is None:
--> 373     self._handle = _dlopen(self._name, mode)
    374 else:
    375     self._handle = handle

OSError: firmware/myproject-478C5A15.so: cannot open shared object file: No such file or directory

This same error occurs when I try to run any of the other tutorial notebooks or compile a HLS4ML model in any other piece of code

Furthermore,

when I try to just build the model without compiling it I get the error message

Project myproject_prj does not exist. Rerun "hls4ml build -p my-hls-test".

Do you know how to rectify this?

Thankyou

[vloncar]

Some tips on solving that can be found here.

[AnthonyAportela]

What ends up happening when you give a reply like this is that it shows up as a google result.

[adityaroy10]

Hello, I have been facing the same error. Did you figure out the solution?

[jmitrevs]

You need to have g++ installed.

[adityaroy10]

I have g++ installed. I am trying to compile my own model.

I should have clarified this earlier. I am encountering the same OSerror.
Additionally, I can run the tutorial successfully. I am encountering this error only when trying to compile my model.

Here is a screenshot of the error