Build both Nitsche and non-Nitsche version

excercise-solution/CMakeLists.txt

 add_executable(solution01 solution01.cc)
 
+add_executable(nitschesolution1 solution01.cc)
+set_property(TARGET nitschesolution1
+  APPEND
+  PROPERTY COMPILE_DEFINITIONS
+  NITSCHE
+  )
+
 dune_symlink_to_source_files(FILES tutorial01.ini unitsquare.geo unitsquare.msh unitcube.msh)

excercise-solution/driver.hh

@@ -57,11 +57,14 @@ void driver (const GV& gv, const FEM& fem,
 
   // Make a local operator
   //== Exercise 2 {
-  // typedef NonlinearPoissonFEM<Problem<RF>,FEM> LOP;
-  // LOP lop(problem);
+#ifdef NITSCHE
   RF stab = ptree.get("fem.stab",(RF)1);
   typedef NitscheNonlinearPoissonFEM<Problem<RF>,FEM> LOP;
   LOP lop(problem,stab);
+#else
+  typedef NonlinearPoissonFEM<Problem<RF>,FEM> LOP;
+  LOP lop(problem);
+#endif
   //== }
 
   // Make a global operator

excercise-solution/solution01.cc

@@ -57,8 +57,11 @@
 
 // include all components making up this tutorial
 //== Exercise 2 {
-// #include"nonlinearpoissonfem.hh"
+#ifdef NITSCHE
 #include "nitschenonlinearpoissonfem.hh"
+#else
+#include "nonlinearpoissonfem.hh"
+#endif
 //== }
 #include"problem.hh"
 #include"driver.hh"