Update slides Makefile and MPI

src/mpi/mpi.tex

 \renewcommand{\FIGREP}{src/mpi/figures}
 
+\section{Compilation with MPI}
+\label{sec:mpi}
+\intersec{deneb}
+
 \section{Use of MPI}
 \label{sec:mpi}
 

src/serial/serial.tex

 \renewcommand{\FIGREP}{src/serial/figures}
 
+\section{Compilation}
+\label{sec:compilation}
+\intersec{deneb}
+
 \section{Basics of compilation}
 \label{sec:basics}
 
@@ -64,7 +68,7 @@
   \end{itemize}
 \end{frame}
 
-\begin{frame}
+\begin{frame}[exercise]
   \frametitle{Compilation}
   \framesubtitle{Exercise simpleCompilation}
   \begin{itemize}
@@ -76,7 +80,7 @@
   \end{itemize}
 \end{frame}
   
-\begin{frame}
+\begin{frame}[exercise]
   \frametitle{Compilation}
   \framesubtitle{Exercise compilationWith2Files}
   \begin{itemize}
@@ -121,7 +125,7 @@
 
 }
 
-\begin{frame}
+\begin{frame}[exercise]
   \frametitle{Compilation}
   \framesubtitle{Exercise compilationWithLibrary}
   \begin{itemize}
@@ -135,7 +139,7 @@
 \begin{frame}[t,fragile]
   \frametitle{Compilation}
   \framesubtitle{Use of library path through modules}
-   When using shared librairies at runtime we need to set \cmd{LD LIBRARY PATH} so the system knows where to find the library
+   When using shared librairies at runtime we need to set \cmd{LD_LIBRARY_PATH} so the system knows where to find the library
   \begin{itemize}
     \item This variable tells the program where to look for dynamic libraries; if this location is changed, it is enough to modify the variable, without changing the program
     \item To tell the system to look in the directory \cmd{/path/to/the/library}, the variable \cmd{LD_LIBRARY_PATH} must be initialized as follows: 
@@ -266,6 +270,14 @@ prepend_path("INCLUDE","/ssoft/spack/arvine/v1/opt/spack/linux-rhel7-skylake_avx
 %    lastline=40}]{examples/compilationWithMakefile}
 \end{frame}
 
+\begin{frame}[t,fragile]
+  \frametitle{Compilation}
+  \framesubtitle{Makefile example}
+  \bashfile[title={examples/compilationWithMakefile/MakefileBis}]{examples/compilationWithMakefile/MakefileBis}
+%  minted options app={firstline=1,
+%    lastline=40}]{examples/compilationWithMakefile}
+\end{frame}
+
 \begin{frame}[t,fragile]
   \frametitle{Compilation}
   \framesubtitle{CMake example}