Update ccache.md

Add reference [skip ci]
2013-09-14 21:31:31 -07:00 · 2013-09-14 21:31:31 -07:00 · b0ad45a268
commit b0ad45a268
parent d28edfce89
1 changed files with 2 additions and 0 deletions
--- a/doc/make/ccache.md
+++ b/doc/make/ccache.md
@ -41,3 +41,5 @@ with the following content:
   argument unused during compilation:" warning.
 - ``-fcolor-diagnostics`` option is used to enable clang's colored
   diagnostic messages.
+
+Reference: http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html