Instructions for Building on Linux Fuller instructions that cover: * Upgrading to gcc 4.9 on older Ubuntus * Optional libraries can be found on our wiki at http://wiki.audacityteam.org/wiki/Building_On_Linux. In fact for Audacity 2.4.0 you should read those instructions rather than these ones, since we switched to CMake for building Audacity itself for 2.4.0 Some prerequisites: - Audacity requires gcc 4.9 or later to build. - CMake ( http://www.cmake.org/ ) is required to build the local copy of the libsoxr resampling library used by Audacity. On a modern Debian distro, e.g. Ubuntu 16.04 (bionic), you would do: sudo apt-get install build-essential cmake - libasound and gtk are required. Having gtk2 and gtk3 too may not be required, but compilation works if both are. - Auto-tools are also needed. sudo apt-get install libasound2-dev libgtk2.0-dev libgtk-3-dev sudo apt-get install autoconf automake - Since you will be fetching code ...