[arrow] branch master updated: ARROW-4436: [Documentation] Update building.rst to reflect pyarrow req

[uw...@apache.org]

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The following commit(s) were added to refs/heads/master by this push:
     new 9f34a41  ARROW-4436: [Documentation] Update building.rst to reflect pyarrow req
9f34a41 is described below

commit 9f34a417a37f6d1f7061cf793292123d9749f9a9
Author: Micah Kornfield <em...@gmail.com>
AuthorDate: Mon Feb 4 16:28:58 2019 +0100

    ARROW-4436: [Documentation] Update building.rst to reflect pyarrow req
    
    Make note of the fact that pyarrow has to be installed for sphinx to successfully build the documentation.
    
    Author: Micah Kornfield <em...@gmail.com>
    
    Closes #3539 from emkornfield/update_build_doc and squashes the following commits:
    
    8a3e5418 <Micah Kornfield> Fix install instructions
    9468abe5 <Micah Kornfield> convert to note
---
 docs/source/building.rst | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/docs/source/building.rst b/docs/source/building.rst
index c6ff974..2239a19 100644
--- a/docs/source/building.rst
+++ b/docs/source/building.rst
@@ -59,7 +59,15 @@ These two steps are mandatory and must be executed in order.
       doxygen
       popd
 
-#. Build the complete documentation using Sphinx
+#. Build the complete documentation using Sphinx.
+
+   .. note::
+
+      This step requires the the pyarrow library is installed
+      in your python environment.  One way to accomplish
+      this is to follow the build instructions at :ref:`development`
+      and then run `python setup.py install` in arrow/python
+      (it is best to do this in a dedicated conda/virtual environment).
 
    .. code-block:: shell