Use targets on duneproject

Update template project to use targets and use more modern CMake

bin/duneproject

@@ -417,11 +417,12 @@ list(APPEND CMAKE_MODULE_PATH "\${PROJECT_SOURCE_DIR}/cmake/modules"
 #include the dune macros
 include(DuneMacros)
 
+# deactivate global include-directories (old versions of dune used to need the OLD policy to work)
+dune_policy(SET DP_DEFAULT_INCLUDE_DIRS NEW)
+
 # start a dune project with information from dune.module
 dune_project()
 
-dune_enable_all_packages()
-
 add_subdirectory(src)
 add_subdirectory(dune)
 add_subdirectory(doc)
@@ -515,8 +516,14 @@ mkdir "$PROJECT/src"
 
 echo "- $PROJECT/src/CMakeLists.txt"
 cat> "$PROJECT/src/CMakeLists.txt" << M_DELIM
-add_executable("${MODULE}" ${MODULE}.cc)
-target_link_dune_default_libraries("${MODULE}")
+# create custom target
+add_executable(${MODULE} ${MODULE}.cc)
+
+# link target against found dune libraries (e.g. dune-common)
+target_link_dune_default_libraries(${MODULE})
+
+# link target against other dune registered packages (e.g. TBB, METIS, etc.)
+dune_target_enable_all_packages(${MODULE})
 M_DELIM
 
 ################## PROJECT.CC ##################