build/docs/mozconfigs.rst
author John Schoenick <john@pointysoftware.net>
Wed, 04 Mar 2015 23:09:00 -0500
changeset 258436 dffb5c867f476431f65783822d0e2b380f58d7e0
parent 162147 b8cebe1d71db7d666c3d1a9123fda7545edbc982
child 439925 c78fdb7724524585387b43ef958a17408827dcfa
permissions -rw-r--r--
Bug 1139560 - Reject non-standard parses of integers in srcset descriptors. r=jst, a=sledru

.. _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

ac_add_options
^^^^^^^^^^^^^^

This is a variant of ac_add_options() which only adds configure options
for a specified application. This is only used when building multiple
applications through client.mk. This function is typically not needed.

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:`mozbuild.mozconfig.MozconfigLoader.find_mozconfig` method:

.. autoclass:: mozbuild.mozconfig.MozconfigLoader
   :members: find_mozconfig