fixed order in cmake files

CMakeLists.txt

@@ -121,38 +121,46 @@ if (WITH_PYTHIA)
   find_package (Pythia8) # optional
 endif (WITH_PYTHIA)
 
-# order of subdirectories
+# include potential ThirdParty code provided with CORSIKA
 add_subdirectory (ThirdParty)
-add_subdirectory (Framework)
-add_subdirectory (Environment)
-add_subdirectory (Stack)
-add_subdirectory (Setup)
-add_subdirectory (Processes)
-add_subdirectory (Documentation)
-add_subdirectory (Main)
-add_subdirectory (Tools)
-if (WITH_COAST)
-  add_subdirectory (COAST)
-endif ()
 
 # check for Eigen3: either use ThirdParty/eigen3 or system-level installation
 if (WITH_EIGEN3)
   string (TOLOWER ${WITH_EIGEN3} WITH_EIGEN3_LOWER)
   if (WITH_EIGEN3_LOWER EQUAL "system")
     find_package (Eigen3 REQUIRED)
+    message ("opt1")
   else ()
     list (APPEND CMAKE_MODULE_PATH "${WITH_EIGEN3}/cmake")
     set (EIGEN3_INCLUDE_DIR "${WITH_EIGEN3}" CACHE PATH "eigen3 directory") 
     find_package (Eigen3 REQUIRED)
+    message ("opt2")
   endif ()
 else (WITH_EIGEN3)
   list (APPEND CMAKE_MODULE_PATH "${LOCAL_Eigen3_VERSION}/cmake")
   set (EIGEN3_INCLUDE_DIR "${LOCAL_Eigen3_VERSION}" CACHE PATH "eigen3 directory")
   find_package (Eigen3 REQUIRED)
+  message ("op3")
 endif (WITH_EIGEN3)
 
 # some final info output
 message ("Use eigen3 version: ${EIGEN3_VERSION} from ${EIGEN3_INCLUDE_DIR}")
 
+
+# order of subdirectories
+add_subdirectory (Framework)
+add_subdirectory (Environment)
+add_subdirectory (Stack)
+add_subdirectory (Setup)
+add_subdirectory (Processes)
+add_subdirectory (Documentation)
+add_subdirectory (Main)
+add_subdirectory (Tools)
+if (WITH_COAST)
+  add_subdirectory (COAST)
+endif ()
+
+
+# final summary output
 include (FeatureSummary)
 feature_summary (WHAT ALL)

Framework/Geometry/CMakeLists.txt

@@ -45,15 +45,15 @@ target_link_libraries (
 
 target_include_directories (
   CORSIKAgeometry
-  SYSTEM
-  PUBLIC ${EIGEN3_INCLUDE_DIR}
+  INTERFACE
+  $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
+  $<INSTALL_INTERFACE:include/include>
   )
 
 target_include_directories (
   CORSIKAgeometry
-  INTERFACE
-  $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
-  $<INSTALL_INTERFACE:include/include>
+  SYSTEM
+  PUBLIC "${EIGEN3_INCLUDE_DIR}"
   )
 
 install (