update subdirectory example for VTK and Voronoi

example/CMakeProjectSubdir/ALL_test_src.cpp

+../ALL_test.cpp
\ No newline at end of file

example/CMakeProjectSubdir/CMakeLists.txt

-# REMEMBER TO SET CC AND CXX! CMake is too dumb to find compiler in your path!
-# mkdcd build
-# CC=gcc CXX=g++ cmake -DALL_DIR=`pwd`/../../jall_bin/lib/cmake/ALL ../
+# REMEMBER TO SET CC AND CXX!
+# CC=gcc CXX=g++ cmake -S . -B build -DALL_DIR=`pwd`/../../jall_bin/lib/cmake/ALL
 
 cmake_minimum_required(VERSION 3.14)
 project(ExampleProject)
@@ -11,20 +10,42 @@ set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+# For cleaner code we should also include MPI here, since this project's source
+# also needs MPI. Otherwise, we are free to leave it out, since the parts
+# required by ALL are automatically included.
+find_package(MPI REQUIRED COMPONENTS CXX Fortran)
+
+# Some variants for testing VTK output and the voronoi method. These are only
+# required, so the code used in .this. project has the corresponding features
+# enabled and calls the respective functions from the library. This is not
+# required for the library itself. Although the library needs to be build with
+# the respective features enabled.
+add_compile_definitions(TEST_VTK_OUTPUT)
+add_compile_definitions(TEST_VORONOI)
+
 set(CM_ALL_FORTRAN ON)
 #set(CM_ALL_USE_F08 ON)
 set(CM_ALL_VORONOI ON)
-#set(CM_ALL_VTK_OUTPUT ON)
+set(CM_ALL_VTK_OUTPUT ON)
 
 add_subdirectory(all)
 
-#find_package(MPI REQUIRED COMPONENTS CXX Fortran)
+# The target names have Ex prefixed, since these are already taken by the library itself.
+add_executable(ExALL_Staggered ALL_Staggered.cpp)
+target_link_libraries(ExALL_Staggered PUBLIC ALL)
+# This is in this case not .necessary., since it is already inherited from ALL,
+# however, for readability and clear intent, we should still link against MPI
+# ourselves, since our code also uses MPI directly.
+target_link_libraries(ExALL_Staggered PUBLIC ${MPI_CXX_LINK_FLAGS} ${MPI_CXX_LIBRARIES})
+target_include_directories(ExALL_Staggered PRIVATE ${MPI_CXX_INCLUDE_PATH})
 
-add_executable(EALL_Staggered ALL_Staggered.cpp)
-target_link_libraries(EALL_Staggered PRIVATE ALL)
+add_executable(ExALL_Staggered_f ALL_Staggered_f.F90)
+set_property(TARGET ExALL_Staggered_f PROPERTY LINKER_LANGUAGE Fortran)
+target_link_libraries(ExALL_Staggered_f PUBLIC ALL_fortran)
+target_link_libraries(ExALL_Staggered_f PUBLIC ${MPI_Fortran_LINK_FLAGS} ${MPI_Fortran_LIBRARIES})
+target_include_directories(ExALL_Staggered_f PRIVATE ${MPI_Fortran_INCLUDE_PATH})
 
-add_executable(EALL_Staggered_f ALL_Staggered_f.F90)
-target_link_libraries(EALL_Staggered_f LINK_PRIVATE ALL)
-target_link_libraries(EALL_Staggered_f LINK_PRIVATE ALL_fortran)
-set_property(TARGET EALL_Staggered_f PROPERTY LINKER_LANGUAGE Fortran)
-#todo(s.schulz): link against MPI
+add_executable(ExALL_test ALL_test.cpp)
+target_link_libraries(ExALL_test PUBLIC ALL)
+target_link_libraries(ExALL_test PUBLIC ${MPI_CXX_LINK_FLAGS} ${MPI_CXX_LIBRARIES})
+target_include_directories(ExALL_test PRIVATE ${MPI_CXX_INCLUDE_PATH})

example/CMakeProjectSubdir/build_all.sh

 #!/bin/bash
 
+export VTK_DIR="`pwd`/vtk_bin/lib/cmake/vtk-7.1"
+
+prepare_example () {
+	cat $1 | sed \
+		-e 's/ALL_VTK_OUTPUT/TEST_VTK_OUTPUT/'\
+		-e 's/ALL_VORONOI_ACTIVE/TEST_VORONOI/'\
+		> $2
+}
+
+prepare_example ALL_test_src.cpp ALL_test.cpp
 rm -rf build && CC=gcc CXX=g++ cmake -S . -B build && VERBOSE=1 cmake --build build