Update slide describing makefile and cmake

src/serial/serial.tex

@@ -274,10 +274,24 @@ prepend_path("INCLUDE","/ssoft/spack/arvine/v1/opt/spack/linux-rhel7-skylake_avx
   \framesubtitle{Use a build system}
    \begin{itemize}
       \item Makefile
+        \begin{description}
+          \item Make is Unix utility that is designed to start execution of a makefile
+          \item The command line \cmd{make} executes shell commands containing in a makefile (list of rules)
+          \item Make keeps track of the last time files: only those files which are required (ones containing changes) were updated and only updates
+    \end{description} 
       \item Cmake
-   \end{itemize}
+        \begin{description}
+          \item CMake is a cross-platform family of tools designed to build, test and package software
+    \end{description} 
+  \end{itemize}
 \end{frame}
-
+\note{
+   \begin{itemize}  
+     \item If you have a large program with many source and/or header files, when you change a file on which others depend, you must recompile all the dependent files. Without a makefile, this is an extremely time-consuming task.   
+     \item The makefile contains a list of rules. These rules tell the system what commands you want to be executed. Most times, these rules are commands to compile(or recompile) a series of files. The rules, which must begin in column 1, are in two parts. The first line is called a dependency line and the subsequent line(s) are called actions or commands. The action line(s) must be indented with a tab.  
+     \item CMake is used to control the software compilation process using simple platform and compiler independent configuration files, and generate native makefiles and workspaces that can be used in the compiler environment of your choice
+   \end{itemize}
+}
 \begin{frame}[t,fragile]
   \frametitle{Compilation}
   \framesubtitle{Makefile example}