home.md

@@ -36,4 +36,13 @@ input:   This is just 1 abbreviated example of character stream input containing
 [0-9]:   .............1..........................................................11..................................1...................1.1........
 ```
 
-Read about the [Parabix Character Class Compilers](CharacterClassCompiler) for more information.
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+Read about the [Parabix Character Class Compilers](CharacterClassCompiler) for more information.
+
+## Build and Test
+
+The Parabix project uses the CMake build system.   See the [CMake documentation at cmake.org] (https://cmake.org/documentation/) for details on CMake.
+
+The parabix-devel/CMakeLists.txt file controls the overall build.   There are generally subdirectories for each Parabix library and tool, each with their own CMakeLists.txt file.
+
+Tests for Parabix applications are found in the parabix-devel/QA directory.
+1.  For more information on testing of icgrep see [greptest](greptest).
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