[Kaleidoscope] doc fix

This fixes the compile command of the example in Chapter 2.

Differential Revision: https://reviews.llvm.org/D43196

llvm-svn: 327989

diff --git a/llvm/docs/tutorial/LangImpl02.rst b/llvm/docs/tutorial/LangImpl02.rst
index d72c8dc9add4e5346742fa7f23e4087433111a47..9f8fd6cee53565a7c6c66209a22a470d6d9a8192 100644 (file)
--- a/llvm/docs/tutorial/LangImpl02.rst
+++ b/llvm/docs/tutorial/LangImpl02.rst
@@ -716,15 +716,15 @@ Intermediate Representation (IR) from the AST.
 Full Code Listing
 =================
 
-Here is the complete code listing for this and the previous chapter.
-Note that it is fully self-contained: you don't need LLVM or any
-external libraries at all for this. (Besides the C and C++ standard
-libraries, of course.) To build this, just compile with:
+Here is the complete code listing for our running example. Because this 
+uses the LLVM libraries, we need to link them in. To do this, we use the
+`llvm-config <http://llvm.org/cmds/llvm-config.html>`_ tool to inform
+our makefile/command line about which options to use:
 
 .. code-block:: bash
 
     # Compile
-    clang++ -g -O3 toy.cpp
+    clang++ -g -O3 toy.cpp `llvm-config --cxxflags`
     # Run
     ./a.out