Dependencies to Compile Audacity on Ubuntu

Compiling Audacity from source on Ubuntu requires a collection of core build tools, graphical toolkit libraries, and audio processing packages to complete the configuration and build process successfully. This guide provides a clear, categorized breakdown of every dependency that must be pre-installed via the Ubuntu package manager before running CMake to build the software.

1. Essential Build Tools

Before configuring Audacity, your system must have the standard C/C++ compilation toolchain, version control, and build automation software installed:

• build-essential: Installs GCC, G++, make, and standard C runtime libraries.
• cmake: Required build system generator (Audacity requires CMake 3.16 or newer).
• git: Needed to clone the Audacity repository and retrieve submodules.
• python3 and python3-pip: Used by build scripts and the Conan package manager (if compiling with Conan-managed dependencies).
• pkg-config: Helps the build system find installed libraries on the system.

2. Graphical Toolkit and Desktop Libraries

Audacity uses wxWidgets with a GTK+ 3 backend for its graphical interface, as well as desktop integration libraries:

• libwxgtk3.2-dev (or libwxgtk3.0-gtk3-dev on older Ubuntu releases): The wxWidgets development libraries.
• libgtk-3-dev: The GTK+ 3 development headers and libraries.
• libglib2.0-dev: Core application building blocks for GTK.

3. Audio System and Driver Interfaces

To interact with Linux audio subsystems, you must install the development packages for ALSA and JACK:

• libasound2-dev: Advanced Linux Sound Architecture (ALSA) development files.
• libjack-jackd2-dev: JACK Audio Connection Kit development files for low-latency audio support.

4. Audio Formats and Processing Libraries

Audacity relies on specialized libraries to decode, encode, and manipulate various audio formats:

• libsndfile1-dev: Essential library for reading and writing sampled sound files.
• libsoxr-dev: High-quality audio resampler library.
• libflac-dev: Free Lossless Audio Codec library.
• libogg-dev and libvorbis-dev: Ogg Vorbis compressed audio libraries.
• libmpg123-dev: Fast MPEG Audio Layer 1, 2, and 3 decoding library.
• libid3tag0-dev: ID3 tag reading library.
• libsoundtouch-dev: Audio tempo and pitch modification library.
• libvamp-hostsdk3v5: Vamp audio analysis plugin SDK.
• libtwolame-dev: MPEG Audio Layer 2 encoder.

Complete Installation Command

You can install the entire set of required build tools and libraries on modern Ubuntu releases by running the following command in the terminal:

sudo apt update
sudo apt install -y \
    build-essential \
    cmake \
    git \
    pkg-config \
    python3 \
    python3-pip \
    libwxgtk3.2-dev \
    libgtk-3-dev \
    libglib2.0-dev \
    libasound2-dev \
    libjack-jackd2-dev \
    libsndfile1-dev \
    libsoxr-dev \
    libflac-dev \
    libogg-dev \
    libvorbis-dev \
    libmpg123-dev \
    libid3tag0-dev \
    libsoundtouch-dev \
    libtwolame-dev

Once these packages are installed, your Ubuntu system will be prepared to clone the Audacity repository and proceed with CMake configuration and compilation.