Difference between revisions of "Building On Linux"
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* Instructions for building modules
* Instructions for building modules
Revision as of 09:27, 31 May 2021
|WARNING: This page is deprecated since May 24, 2021. Please, see the up-to-date instruction: https://github.com/audacity/audacity/blob/master/BUILDING.md|
- Instructions for building modules
- Instructions for FFmpeg too:
This is the configure command Steve uses for testing/developing: ../configure --with-lib-preference="local system" --with-ffmpeg="system" --disable-dynamic-loading --with-mod-script-pipe --with-mod-nyq-bench --enable-debug For a "release build": ../configure --with-lib-preference="local system" --with-ffmpeg="system" --disable-dynamic-loading
|These are instructions for building on Linux
The build family of pages:
Instructions in linux/build.txt
These instructions are supplemental to the linux/build.txt in the source code.
Step-by-step instructions for building on Ubuntu are also periodically posted to the Audacity forum.
In addition to the listed dependencies and standard build environment, Audacity also requires Python 3 (Audacity 2.4.1 and earlier requires Python 2.7).
On Debian / Ubuntu, systems, if Python 3 is not already installed, it may be installed with:
sudo apt install python3-minimal
Instructions for Building on Linux Prerequisites: - Repository sources (sources.list) must include source code sources. - For MP3 / FFmpeg support, "non-free" repositories may need to be enabled. - Root access is required for installation (usually via "sudo"). - gcc >= 4.9 - cmake ( http://www.cmake.org/ ) >= 3.15 - git On a modern Debian based distro, e.g. Ubuntu 20.04 (focal), you would do: ~$ sudo apt-get install build-essential cmake git For older distributions it may be necessary to build cmake from source (see separate notes on http://wiki.audacityteam.org/wiki/Building_On_Linux. Dependencies: (The package names below are those used by Ubuntu 20.04.) For Debian / Ubuntu based distributions, these packages may be installed from the command line with: ~$ sudo apt install <package-name> - libgtk2.0-dev - libasound2-dev - python3-minimal - libavformat-dev - libjack-jackd2-dev - WxWidgets 3.1 built with gtk2. (see note below) wxWidgets: Audacity's fork of wxWidgets 3.1.3 (https://github.com/audacity/wxWidgets) should be used as this includes bug fixes that are not yet available upstream. WxWidgets should be built with gtk2 as gtk3 is not yet fully supported. 1) Clone wxWidgets: ~$ git clone --recurse-submodules https://github.com/audacity/wxWidgets/ If you forgot the --recurse-submodules, you can correct that later by: ~$ git submodule update --init 2) Build and install wxWidgets: ~$ cd <wxWidgets source code> ~$ mkdir buildgtk ~$ cd buildgtk ~$ ../configure --with-cxx=14 --with-gtk=2 ~$ sudo make install On a multi-core system, the build process can be made much quicker using the "-j" switch, set to the number of available cores. For example, with an 8 core processor: ~$ sudo make -j8 install 3) Having got this far, it is well worth trying out building some wxWidgets examples to confirm that building has worked OK. Audacity: Getting the Audacity source code: The latest release version of Audacity is available from: https://www.fosshub.com/Audacity.html This is the recommended version for end users. For developers, the current development code is available from Github. Cloning the repository (https://github.com/audacity/audacity) is recommended so that the source tree may easily be kept up to date. Building Audacity As long as "/usr/local/bin" is in your PATH, then the wx-config should be found when you "cmake" Audacity. If the path to wxWidgets isn't in PATH, then add the option: -DwxWidgets_CONFIG_EXECUTABLE=<path to>/wx-config 1. Make a build directory under the audacity git directory: ~$ cd <audacity source code> ~$ mkdir build ~$ cd build 2. Generate the makefiles: ~$ cmake -DCMAKE_BUILD_TYPE=Release -Daudacity_use_ffmpeg=loaded .. 3. Build Audacity: ~$ make For multi-core processors, the "-j" switch may be used for faster building, for example, with a 4 core CPU: ~$ make -j4 4. Testing the build: Adding a "Portable Settings" folder allows Audacity to ignore the settings of any existing Audacity installation. ~$ cd bin/Release ~$ mkdir "Portable Settings" ~$ ./audacity Installing Audacity ~$ cd <build directory> ~$ sudo make install Options: The options in the above example will produce a full release build, with FFmpeg enabled. A full list of option can be found here: https://wiki.audacityteam.org/wiki/CMake_Options#Linux or may be listed in the terminal by running: ~$ cmake -LH Installing the manual: The Audacity manual is html, and is identical for Windows, Mac and Linux. The manual may be downloaded as a ZIP archive from: Current version: https://www.fosshub.com/Audacity.html Old versions: https://www.fosshub.com/Audacity-old.html Assuming that Audacity has been installed to /usr/local/ (default). From the directory containing the manual ZIP archive: ~$ sudo unzip audacity-manual-2.4.2.zip -d /usr/local/share/audacity/help
Instructions for building cmake for distributions that only have CMake < 3.15
Instructions for Installing recent CMake on Ubuntu. You'll need CMake 3.15 or higher. These steps were tested with CMake 3.17.1. 1. Check whether you need to upgrade. cmake --version 2. Download the cmake install script from kitware https://cmake.org/download/ Get the binary version for linux, the bash script cmake-3.<something>.sh 3. Move it to the directory where you want to install CMake, possibly /usr/local (you could install it anywhere and then symlink to it) I used /usr/local so that I would not need to blow away the older copy in /usr/bin if it hadn't worked out. 4. Run the script sudo chmod +x cmake-3.<something>.sh sudo bash cmake-3.<something>.sh You will answer n (no for an extra subdirectory) and then y. 5. Check that worked cmake --version
About Box Details The about box should show a git build identifier, if the source was under git version control. There will be no such identifier if you built from the tarball. Distros which ship a modified Audacity are encouraged to use git and so to show their own git identifier.
Official Full Releases
Official full releases:
- Executables: Have a GitIdent, visible in the about box build information, that says what branch was used in building.
- Source-Code distros: Are minimal cut down versions from the release branch. We take out system libs that we expect to be provided by the distro, and that we haven't patched.
Updating .po files
With an official release, we ask translators to translate an updated .pot file. We create this with the following script:
cd locale bash update_po_files.sh
Note: The script has the Audacity version number in it in three places, and all three should be updated before running it.
Making a Minimal Tarball
If using CMake build (you should use it!)
Older / Obsolete stuff
- We recommend that maintainers of linux distros that ship pre built copies of Audacity build with a GitIdent that reflects the state of their version of the branch including their patches to it.
- We don't recommend having a Git ident when distributing in source code form, and we don't either in our
git show -s --format="#define REV_LONG \"%H\"%n#define REV_TIME \"%cd\"%n" | tee ../src/RevisionIdent.h or easier use ../mac/get_gitident.sh
The CMake build adds the gitident automatically and this step is only needed with the automake builds.
Making a Minimal Tarball
If using Autotools buildchain
Clean your copy. You check using -n and clean with -f. git clean -x -d -n git clean -x -d -f Now configure as if for building: ./configure --with-lib-preference="local system" Run the make tarball script: ./scripts/maketarball.sh verbose Check the tarball is good for building: cd ../audacity-minsrc-x.y.z ./configure --with-lib-preference="local system" make -j4
gcc 4.9 on Ubuntu 14.04
If you're on Ubuntu 14.04, you need to upgrade the gcc compiler to at least 4.9.
1) export CXX="g++-4.9" CC="gcc-4.9" 2) g++-4.9 --version
You also must tell gcc to use c++11, so adapt the earlier configure command as follows: ../configure --with-lib-preference="local system" CXXFLAGS="-std=c++11"