From 5fe797b6f9cf0059ab418f46ba634656a21acb28 Mon Sep 17 00:00:00 2001
From: Dominic Hamon <dma+github@stripysock.com>
Date: Wed, 18 Feb 2015 22:15:05 -0800
Subject: [PATCH] Add top-level folders to gitignore to enable out-of-source
 builds

---
 .gitignore | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/.gitignore b/.gitignore
index 5b2481bb..ac464346 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,20 +5,35 @@
 *.cmake
 !/cmake/*.cmake
 *~
-/test/benchmark_test
-/test/re_test
+
+# cmake files.
 /Testing
 CMakeCache.txt
 CMakeFiles/
-Makefile
-bin/
 cmake_install.cmake
+
+# makefiles.
+Makefile
+
+# in-source build.
+bin/
 lib/
+/test/benchmark_test
+/test/re_test
+
+# exuberant ctags.
 tags
+
+# YouCompleteMe configuration.
 .ycm_extra_conf.pyc
 
+# ninja generated files.
 .ninja_deps
 .ninja_log
 build.ninja
 install_manifest.txt
 rules.ninja
+
+# out-of-source build top-level folders.
+build/
+_build/