I can't install llvmlite on raspberry pi 4

pi@raspberrypi:~$ pip3 install llvmlite
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting llvmlite
  Using cached https://files.pythonhosted.org/packages/71/4e/b1086722f4fa0b52cf8c0d4b2c985fb3f95d2f1be1b010259497b2464c1d/llvmlite-0.33.0.tar.gz
Building wheels for collected packages: llvmlite
  Running setup.py bdist_wheel for llvmlite ... error
  Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-sdekp53y/llvmlite/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/pip-wheel-ikvvuryb --python-tag cp37:
  running bdist_wheel
  /usr/bin/python3 /tmp/pip-install-sdekp53y/llvmlite/ffi/build.py
  LLVM version... Traceback (most recent call last):
    File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 105, in main_posix
      out = subprocess.check_output([llvm_config, '--version'])
    File "/usr/lib/python3.7/subprocess.py", line 395, in check_output
      **kwargs).stdout
    File "/usr/lib/python3.7/subprocess.py", line 472, in run
      with Popen(*popenargs, **kwargs) as process:
    File "/usr/lib/python3.7/subprocess.py", line 775, in __init__
      restore_signals, start_new_session)
    File "/usr/lib/python3.7/subprocess.py", line 1522, in _execute_child
      raise child_exception_type(errno_num, err_msg, err_filename)
  FileNotFoundError: [Errno 2] No such file or directory: 'llvm-config': 'llvm-config'
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 191, in <module>
      main()
    File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 181, in main
      main_posix('linux', '.so')
    File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 108, in main_posix
      "to the path for llvm-config" % (llvm_config,))
  RuntimeError: llvm-config failed executing, please point LLVM_CONFIG to the path for llvm-config
  error: command '/usr/bin/python3' failed with exit status 1
  
  ----------------------------------------
  Failed building wheel for llvmlite
  Running setup.py clean for llvmlite
Failed to build llvmlite
Installing collected packages: llvmlite
  Running setup.py install for llvmlite ... error
    Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-sdekp53y/llvmlite/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-8zgcbwp0/install-record.txt --single-version-externally-managed --compile --user --prefix=:
    running install
    running build
    got version from file /tmp/pip-install-sdekp53y/llvmlite/llvmlite/_version.py {'version': '0.33.0', 'full': '76c8ecba36e23fa8b6878505a1afc8a3d7a2c8a1'}
    running build_ext
    /usr/bin/python3 /tmp/pip-install-sdekp53y/llvmlite/ffi/build.py
    LLVM version... Traceback (most recent call last):
      File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 105, in main_posix
        out = subprocess.check_output([llvm_config, '--version'])
      File "/usr/lib/python3.7/subprocess.py", line 395, in check_output
        **kwargs).stdout
      File "/usr/lib/python3.7/subprocess.py", line 472, in run
        with Popen(*popenargs, **kwargs) as process:
      File "/usr/lib/python3.7/subprocess.py", line 775, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.7/subprocess.py", line 1522, in _execute_child
        raise child_exception_type(errno_num, err_msg, err_filename)
    FileNotFoundError: [Errno 2] No such file or directory: 'llvm-config': 'llvm-config'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 191, in <module>
        main()
      File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 181, in main
        main_posix('linux', '.so')
      File "/tmp/pip-install-sdekp53y/llvmlite/ffi/build.py", line 108, in main_posix
        "to the path for llvm-config" % (llvm_config,))
    RuntimeError: llvm-config failed executing, please point LLVM_CONFIG to the path for llvm-config
    error: command '/usr/bin/python3' failed with exit status 1
    
    ----------------------------------------
Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-sdekp53y/llvmlite/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-8zgcbwp0/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /tmp/pip-install-sdekp53y/llvmlite/
pi@raspberrypi:~$ 

[JanLahmann]

FWIW, on an RPi4 with Raspbian Buster, the following worked for me to install llvmlite: sudo apt install llvm-9 LLVM_CONFIG=llvm-config-9 pip install llvmlite

[FardowsaRoble]

To solve this issue: I installed LLVM 11 because the llvm was not configured to the right path (“RuntimeError: Building llvmlite requires LLVM 11.x.x, got ‘9.0.1’. Be sure to set LLVM_CONFIG to the right executable path.”) – This is the Error I got.

Solution: 1: sudo apt install llvm-11 2: LLVM_CONFIG=llvm-config-11 pip3 install llvmlite 3: LLVM_CONFIG=llvm-config-11 pip3 install librosa

Result I got: “Successfully installed librosa-0.9.2 llvmlite-0.39.0 numba-0.56.0 resampy-0.3.1”

Hope this helps