Compilation instructions are broken

[joshavant]

I'm on macOS 14.1.1 with Xcode 15.4 on an M1 Max CPU, using the latest commit on master (a770d1bc2b3f9fb3cefa835dcf5eb6a6e05e0f07).

So, since brew install is broken (#1438), I went to try the compilation instructions on the website, located here: https://essentia.upf.edu/installing.html#compiling-essentia

The given waf configure command completes successfully. (python3 waf configure --build-static --with-python --with-cpptests --with-examples --with-vamp)

However, building everything with python3 waf does not.

The full output from both of these commands is linked below, but the interesting part to me seems to be this compiler error:

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__config:1010:49: note: expanded from macro '_LIBCPP_DEPRECATED'
#      define _LIBCPP_DEPRECATED __attribute__((__deprecated__))
                                                ^
../src/essentia/utils/audiocontext.cpp:33:3: error: use of undeclared identifier 'av_register_all'

From some quick research, av_register_all is an ffmpeg function that was deprecated 6 years ago. (leandromoreira/ffmpeg-libav-tutorial#29).

If the project has a dependency on a 6+ year old library, that seems like essential documentation for the installation instructions, making them broken without it.

As a new user to this project, with this issue and #1438, I don't see a clear way for any new users to adopt this project.

Full compilation output