gecko-dev/build/docs/mozconfigs.rst
Mitchell Hentges ed90a04ad1 Bug 1632874: |mach bootstrap| should write mozconfig file if it doesn't exist r=rstewart
Rather than always printing instructions at the end of the bootstrap phase, we will now create a mozconfig
file if one doesn't exist and there's configuration to be written.

Differential Revision: https://phabricator.services.mozilla.com/D78417
2020-06-08 19:36:56 +00:00

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1.6 KiB
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.. _mozconfig:
===============
mozconfig Files
===============
mozconfig files are used to configure how a build works.
mozconfig files are actually shell scripts. They are executed in a
special context with specific variables and functions exposed to them.
API
===
Functions
---------
The following special functions are available to a mozconfig script.
ac_add_options
^^^^^^^^^^^^^^
This function is used to declare extra options/arguments to pass into
configure.
e.g.::
ac_add_options --disable-tests
ac_add_options --enable-optimize
mk_add_options
^^^^^^^^^^^^^^
This function is used to inject statements into client.mk for execution.
It is typically used to define variables, notably the object directory.
e.g.::
mk_add_options AUTOCLOBBER=1
Special mk_add_options Variables
--------------------------------
For historical reasons, the method for communicating certain
well-defined variables is via mk_add_options(). In this section, we
document what those special variables are.
MOZ_OBJDIR
^^^^^^^^^^
This variable is used to define the :term:`object directory` for the current
build.
Finding the active mozconfig
============================
Multiple mozconfig files can exist to provide different configuration
options for different tasks. The rules for finding the active mozconfig
are defined in the
:py:func:`mozboot.mozconfig.find_mozconfig` method.
.. automodule:: mozboot.mozconfig
:members: find_mozconfig
Loading the active mozconfig
----------------------------
.. autoclass:: mozbuild.mozconfig.MozconfigLoader
:members: read_mozconfig