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Add description of how to build docs

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168088 91177308-0d34-0410-b5e6-96231b3b80d8
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Joel Jones 2012-11-15 21:15:08 +00:00
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docs/GettingStarted.rst
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@ -842,12 +842,39 @@ any subdirectories that it contains. Entering any directory inside the LLVM
object tree and typing ``gmake`` should rebuild anything in or below that
directory that is out of date.
This does not apply to building the documentation.
LLVM's (non-Doxygen) documentation is produced with the
`Sphinx <http://sphinx-doc.org/>`_ documentation generation system.
There are some HTML documents that have not yet been converted to the new
system (which uses the easy-to-read and easy-to-write
`reStructuredText <http://sphinx-doc.org/rest.html>`_ plaintext markup
language).
The generated documentation is built in the ``SRC_ROOT/docs`` directory using
a special makefile.
For instructions on how to install Sphinx, see
`Sphinx Introduction for LLVM Developers
<http://lld.llvm.org/sphinx_intro.html>`_.
After following the instructions there for installing Sphinx, build the LLVM
HTML documentation by doing the following:
.. code-block:: bash
$ cd SRC_ROOT/docs
$ make -f Makefile.sphinx
This creates a ``_build/html`` sub-directory with all of the HTML files, not
just the generated ones.
This directory corresponds to ``llvm.org/docs``.
For example, ``_build/html/SphinxQuickstartTemplate.html`` corresponds to
``llvm.org/docs/SphinxQuickstartTemplate.html``.
The :doc:`SphinxQuickstartTemplate` is useful when creating a new document.
Cross-Compiling LLVM
--------------------
It is possible to cross-compile LLVM itself. That is, you can create LLVM
executables and libraries to be hosted on a platform different from the platform
where they are build (a Canadian Cross build). To configure a cross-compile,
where they are built (a Canadian Cross build). To configure a cross-compile,
supply the configure script with ``--build`` and ``--host`` options that are
different. The values of these options must be legal target triples that your
GCC compiler supports.