Updating GettingStarted documentation to reference CMake as the preferred way to build LLVM.

Reviewers: chandlerc, samsonov, echristo

Reviewed By: samsonov

Subscribers: emaste, joker.eph, llvm-commits

Differential Revision: http://reviews.llvm.org/D8046

llvm-svn: 232135
diff --git a/llvm/docs/index.rst b/llvm/docs/index.rst
index 63e8722..adb5419 100644
--- a/llvm/docs/index.rst
+++ b/llvm/docs/index.rst
@@ -70,6 +70,7 @@
    CommandGuide/index
    GettingStarted
    GettingStartedVS
+   BuildingLLVMWithAutotools
    FAQ
    Lexicon
    HowToAddABuilder
@@ -105,6 +106,10 @@
    An addendum to the main Getting Started guide for those using Visual Studio
    on Windows.
 
+:doc:`BuildingLLVMWithAutotools`
+   An addendum to the Getting Started guide with instructions for building LLVM
+   with the Autotools build system.
+
 :doc:`tutorial/index`
    Tutorials about using LLVM. Includes a tutorial about making a custom
    language with LLVM.