The Meson Build System
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Daniel Mensinger f097b96883 cmake: fix missing -lpthread (fixes #5821) 20 hours ago
ci ci: Fix failures in vs2019 jobs on Azure 4 weeks ago
ciimage Adapting Boost Python library detection to Boost >= 1.67. Closes #4288. 1 month ago
cross Add basic Webassembly support via Emscripten. 2 weeks ago
data Add is_disabler function 1 week ago
docs Add HelenOS to 2 days ago
graphics New logo and license text. Closes #4921. [skip ci] 6 months ago
man Change meson test's build failure exit code to 125 1 month ago
manual tests Fix crlf line endings 9 months ago
mesonbuild cmake: fix missing -lpthread (fixes #5821) 14 hours ago
msi Update MSI creator script to newest VS on Win 7. [skip ci] 2 weeks ago
test cases Make .extract_objects() work correctly as an input to custom_target 4 days ago
tools Fix unused variables warnings 3 months ago
.coveragerc Enable code coverage on Travis. 2 years ago
.editorconfig Add editorconfig file 2 years ago
.flake8 add missing commas 1 month ago
.gitattributes Fix crlf line endings 9 months ago
.gitignore allow nested if loop 7 months ago
.mailmap mailmap: add couple of aliases 2 years ago
.pylintrc add pylint config file. update Sider CI name 2 weeks ago
.travis.yml .travis.yml: Fix cross-mingw test failures 4 weeks ago
COPYING Start of project. 6 years ago Add missing file to manifest. [skip ci] 1 year ago Readme fixes. [skip ci] 2 months ago Fix for zipapp to work 1 year ago
azure-pipelines.yml add pylint Azure job 2 weeks ago Readme fixes. [skip ci] 2 months ago using urlopen() with explicit timeout 1 year ago sys.path requires str, not pathlib.Path 1 year ago
mypy.ini ENH: metadata PEP390 setup.cfg 1 month ago run_cross_tests: Pass correct argument 4 months ago tests: Ignore all files in 'data' directories 1 month ago tests: add wasm to run_project_tests --only 1 week ago Put native file before cross file in options list 1 week ago unittests: Create a fake DynamicLinker when necessary 1 week ago
setup.cfg Remove unnecessary setup.cfg lines that confound offline use 1 month ago Add optional progress bar when generating 1 month ago
sider.yml add pylint config file. update Sider CI name 2 weeks ago Add an azure-pipelines.yml 10 months ago

Meson® is a project to create the best possible next-generation build system.


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  • Python (version 3.5 or newer)
  • Ninja (version 1.5 or newer)

Installing from source

You can run Meson directly from a revision control checkout or an extracted tarball. If you wish you can install it locally with the standard Python distutils command python3 install <your options here>.

Meson is also available from PyPi, so it can be installed with pip3 install meson (this does not require a source checkout, pip will download the package automatically). The exact command to type to install with Pip can vary between systems, be sure to use the Python 3 version of Pip.


Meson requires that you have a source directory and a build directory and that these two are different. In your source root must exist a file called To generate the build system run this command:

meson <source directory> <build directory>

Depending on how you obtained Meson the command might also be called instead of plain meson. In the rest of this document we are going to use the latter form.

You can omit either of the two directories, and Meson will substitute the current directory and autodetect what you mean. This allows you to do things like this:

cd source_root; mkdir builddir; cd builddir; meson ..


cd source_root; mkdir builddir; meson builddir

To compile, cd into your build directory and type ninja. To run unit tests, type ninja test.

Install is the same but it can take an extra argument:

DESTDIR=/destdir/path ninja install

DESTDIR can be omitted. If you are installing to system directories, you may need to run this command with sudo.


We love code contributions. See the contribution page on the web site for details.


The irc channel for Meson is #mesonbuild over at Freenode.

You can use FreeNode’s official webchat to connect to this channel.

Further info

More information about the Meson build system can be found at the project’s home page.

Meson is a registered trademark of Jussi Pakkanen.