[doc][handbook] do not mention debug opts

debug.opts and optim.opts do not exist anymore. This commit adapts the
respective section in the handbook.

doc/handbook/2_detailedinstall.tex

@@ -165,19 +165,13 @@ $ ./dune-common/bin/dunecontrol --configure-opts="CXXFLAGS=-fno-strict-aliasing"
 \end{lstlisting}
 
 Too many options can make life hard. That's why usually option files are being used together with \texttt{dunecontrol} and its sub-tools.
-Larger sets of options are kept in them. If you are going to compile with options suited for debugging the code, the following
+Larger sets of options are kept in them. If you are going to compile with modified options, the following
 can be a starting point:
 \begin{lstlisting}[style=Bash]
 $ # make sure you are in the common root directory
-$ cp dumux/debug.opts my-debug.opts      # create a personal version
-$ gedit my-debug.opts                    # optional editing the options file
-$ ./dune-common/bin/dunecontrol --opts=my-debug.opts --use-cmake all
-\end{lstlisting}
-
-More optimized code, which is typically not usable for standard debugging tasks, can be produced by
-\begin{lstlisting}[style=Bash]
-$ cp dumux/optim.opts my-optim.opts
-$ ./dune-common/bin/dunecontrol --opts=my-optim.opts --use-cmake all
+$ cp dumux/cmake.opts my-cmake.opts      # create a personal version
+$ gedit my-cmake.opts                    # optional editing the options file
+$ ./dune-common/bin/dunecontrol --opts=my-cmake.opts all
 \end{lstlisting}
 
 Sometimes, it is necessary to have additional options which
@@ -257,7 +251,7 @@ Make sure that it uses the same library as \Dune when configuring the external l
 
 Some of the libraries are then compiled within that directory and are not installed in
 a different place, but \Dune may need to know their location. Thus, one may have to refer to
-them as options for \texttt{dunecontrol}, for example via the options file \texttt{my-debug.opts}.
+them as options for \texttt{dunecontrol}, for example via the options file \texttt{my-cmake.opts}.
 Make sure you compile the required external libraries before you run \texttt{dunecontrol}.
 
 An easy way to install some of the libraries and modules given below is the

doc/handbook/4_developingdumux.tex

@@ -36,23 +36,18 @@ For the style guide and instructions how to contribute to \Dumux visit
 \Dumux users and developers at the LH2 are also referred to the internal Wiki for
 more information.
 
-\paragraph{Option Files optim.opts and debug.opts}
+\paragraph{Optimized computation vs debugging}
 \Dune and \Dumux are built with the help of \texttt{dunecontrol}, as explained on page \pageref{buildIt}.
-The options needed to be specified for that are provided using option files like
-\texttt{debug.opts} and \texttt{optim.opts}. These two compile \Dune and \Dumux
-either for debugging or for fast simulation. Programs compiled with optimization options
-can lead to a speedup of factor up to ten!\par
-In contrast programs that are compiled with optimization can hardly be debugged.
-You can modify the files and change the compiler, the name of the build director,
-add third-party dependencies, add additional compiler flags, ... .
+Per default, \Dumux is compiled using optimization options, which leads to faster runtimes but is unsuitable
+for debugging. For debug opts you can set \texttt{DCMAKE_BUILD_TYPE} to \texttt{Debug} or \texttt{RelWithDebInfo}
+in your options file. You can also do this in any of the \texttt{CMakeLists.txt} in Dumux by adding
+
 \begin{lstlisting}[style=Shell]
-BUILDDIR=build-clang
-CMAKE_FLAGS="\
-  -DCMAKE_C_COMPILER=/usr/bin/clang \
-  -DCMAKE_CXX_COMPILER=/usr/bin/clang++ \
-  -DUG_DIR=./externals/ug-3.12.1"
+set(CMAKE_BUILD_TYPE Debug)
 \end{lstlisting}
 
+Afterwarde rerun cmake again (run cmake <path-to-build-dir>).
+
 \paragraph{Dunecontrol for selected modules}
 A complete build using \texttt{dunecontrol} takes some time. In many cases not all modules need to be re-built.
 Pass the flag \texttt{--only=dumux} to \texttt{dunecontrol} for configuring or building only \Dumux. A more

doc/handbook/installDumux.sh

@@ -42,7 +42,7 @@ echo "(2/2) Configure dune modules and dumux. Build the
 dune libaries. This may take several minutes."
 echo "*************************************************"
 # run build
-./dune-common/bin/dunecontrol --opts=dumux/optim.opts all
+./dune-common/bin/dunecontrol --opts=dumux/cmake.opts all
 #
 if [ $? -ne 0 ]; then
     echo "*************************************************"