changing compilers for the examples

Manual/openad.tex

@@ -416,6 +416,8 @@ \subsection{Forward Mode}\label{sec:forwardMode}
 \hspace*{.3cm}\lstinline{cd $OPENDADROOT/Examples/OneMinute}\\ %$
 \hspace*{.3cm}\lstinline{make}\\[1ex]
 This creates an executable called \lstinline{driver}.
+The \lstinline{Makefile} tests if \lstinline{F90C} is defined in the environment and 
+if not assumes \lstinline{gfortran} is installed and should be used.  
 The output generated by running \lstinline{driver} is shown in  \reffig{fig:oneMinuteOutput}.\\[1ex]
 \nav{An approach without using the \lstinline{openad} script is explained in \refsec{sec:manualForward}.} 
 \begin{figure}
@@ -474,7 +476,10 @@ \subsection{Reverse Mode}\label{sec:reverseMode}
 As in \refsec{sec:forwardMode}, the \lstinline{openad} script 
 copies the appropriate run time support files into the working directory. These support 
 files need to be compiled and linked with the driver and the transformed code. 
-The example includes a \lstinline{Makefile}, see \reffig{fig:OneMinuteReverseMake}, 
+The example includes a \lstinline{Makefile} (see \reffig{fig:OneMinuteReverseMake}, 
+in addition to testing  if \lstinline{F90C} is defined in the environment 
+it also tests for \lstinline{CC} and 
+if not assumes \lstinline{gcc} is installed and should be used), 
 \begin{figure}
 \begin{boxedminipage}{\textwidth}
 \scriptsize
@@ -2747,9 +2752,13 @@ \section{Two Small Examples}\label{sec:toyExample}
 \item computing a whole Jacobian either iteratively or in vector mode
 \item controlling call graph reversal mode
 \end{itemize}
-
 To obtain the source code for the examples in this section please refer to \refsec{sec:compilingManual}. 
 To run the examples one needs to install \OpenADF\ following the instructions in \refsec{sec:dab}.
+As in 
+\refsec{sec:oneMinute}
+one can change the default Fortran  and C compilers for these examples by setting the
+environemt variables \lstinline{F90C} and \lstinline{CC} respectively. 
+We have tested the examples with \lstinline{gfortran}, NAG \lstinline{f95} and Intel's \lstinline{ifort}.  
 
 \subsection{FDC example}\label{sec:fdcExample}
 This example code was taken from the Minpack test problem ``flow in a driven cavity''.