..
   Copyright Spack Project Developers. See COPYRIGHT file for details.

   SPDX-License-Identifier: (Apache-2.0 OR MIT)

.. meta::
   :description lang=en:
      An overview of the build systems supported by Spack, with links to detailed documentation for each system.

.. _build-systems:

Build Systems
=============

Spack defines a number of classes that understand how to use common `build systems  <https://en.wikipedia.org/wiki/List_of_build_automation_software>`_ (Makefiles, CMake, etc.).
Spack package definitions can inherit these classes in order to streamline their builds.

This guide provides information specific to each particular build system.
It assumes that you've read the Packaging Guide :doc:`part 1 <packaging_guide_creation>` and :doc:`part 2 <packaging_guide_build>` and expands on these ideas for each distinct build system that Spack supports:

.. toctree::
   :maxdepth: 1
   :caption: Make-based

   build_systems/makefilepackage

.. toctree::
   :maxdepth: 1
   :caption: Make-incompatible

   build_systems/mavenpackage
   build_systems/sconspackage
   build_systems/wafpackage

.. toctree::
   :maxdepth: 1
   :caption: Build-script generation

   build_systems/autotoolspackage
   build_systems/cmakepackage
   build_systems/cachedcmakepackage
   build_systems/mesonpackage
   build_systems/qmakepackage
   build_systems/sippackage

.. toctree::
   :maxdepth: 1
   :caption: Language-specific

   build_systems/luapackage
   build_systems/octavepackage
   build_systems/perlpackage
   build_systems/pythonpackage
   build_systems/rpackage
   build_systems/racketpackage
   build_systems/rubypackage

.. toctree::
   :maxdepth: 1
   :caption: Other

   build_systems/bundlepackage
   build_systems/cudapackage
   build_systems/custompackage
   build_systems/inteloneapipackage
   build_systems/rocmpackage
   build_systems/sourceforgepackage

For reference, the :py:mod:`Build System API docs <spack_repo.builtin.build_systems>` provide a list of build systems and methods/attributes that can be overridden.
If you are curious about the implementation of a particular build system, you can view the source code by running:

.. code-block:: console

   $ spack edit --build-system autotools


This will open up the ``AutotoolsPackage`` definition in your favorite editor.
In addition, if you are working with a less common build system like QMake, SCons, or Waf, it may be useful to see examples of other packages.
You can quickly find examples by running:

.. code-block:: console

   $ spack cd --packages
   $ grep -l QMakePackage */package.py


You can then view these packages with ``spack edit``.

This guide is intended to supplement the :py:mod:`Build System API docs <spack_repo.builtin.build_systems>` with examples of how to override commonly used methods.
It also provides rules of thumb and suggestions for package developers who are unfamiliar with a particular build system.