From b4e00d60977b7660f58d79d80e4cb1dddbbdc948 Mon Sep 17 00:00:00 2001
From: Philip Pfaffe <philip.pfaffe@gmail.com>
Date: Tue, 11 Jul 2017 20:37:28 +0000
Subject: [PATCH] [WWW] Add a section to Getting Started about building
 out-of-tree

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@307704 91177308-0d34-0410-b5e6-96231b3b80d8
---
 www/get_started.html | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/www/get_started.html b/www/get_started.html
index 2dac41cd..5d2caba0 100644
--- a/www/get_started.html
+++ b/www/get_started.html
@@ -53,6 +53,18 @@ cmake ../llvm_git && make
 
 <pre>make check-polly</pre>
 
+<h3>Building Polly Without LLVM</h3>
+It is also possible to build Polly without
+also building LLVM. All you need is an installed version of LLVM or a previous
+build. To configure Polly to use a pre-built LLVM, set the
+<code>-DCMAKE_PREFIX_PATH</code> option:
+
+<pre>cmake -DCMAKE_PREFIX_PATH=${LLVM_PREFIX}/lib/cmake/llvm</pre>
+
+To run unittests, however, you need to have the LLVM source directory around.
+Polly will use the <code>llvm-config</code> of the LLVM you're building against
+to guess the location of the source directory. You may override autodetected
+location by setting the <code>-DLLVM_SOURCE_ROOT</code> option.
 
 <h3> Troubleshooting</h3>
 
-- 
2.11.4.GIT