fix schroedinger-splitting example

examples/CMakeLists.txt

@@ -28,7 +28,6 @@ set(EXAMPLES_LIST
     par-ilu-convergence
     performance-debugging
     preconditioner-export
-    schroedinger-splitting
     simple-solver-logging)
 
 if(GINKGO_BUILD_CUDA AND GINKGO_BUILD_OMP)
@@ -41,9 +40,9 @@ endif()
 
 find_package(OpenCV QUIET)
 if(OpenCV_FOUND)
-    list(APPEND EXAMPLES_LIST heat-equation)
+    list(APPEND EXAMPLES_LIST heat-equation schroedinger-splitting)
 else()
-    message(STATUS "No OpenCV found, disabling heat-equation example")
+    message(STATUS "No OpenCV found, disabling examples with video output")
 endif()
 
 if(GINKGO_HAVE_PAPI_SDE)

examples/schroedinger-splitting/CMakeLists.txt

@@ -1,12 +1,15 @@
-set(target_name "schroedinger-splitting")
-find_package(OpenCV)
+cmake_minimum_required(VERSION 3.9)
+project(schroedinger-splitting)
 
-if (OpenCV_FOUND)
-    add_executable(${target_name} ${target_name}.cpp)
-    target_link_libraries(${target_name} Ginkgo::ginkgo ${OpenCV_LIBS})
-    target_include_directories(${target_name} PRIVATE ${PROJECT_SOURCE_DIR})
-    configure_file(../../matrices/examples/gko_logo_2d.mtx data/gko_logo_2d.mtx COPYONLY)
-    configure_file(../../matrices/examples/gko_text_2d.mtx data/gko_text_2d.mtx COPYONLY)
-else()
-    message("OpenCV not found, skipping schroedinger-splitting example")
+# We only need to find Ginkgo if we build this example stand-alone
+if (NOT GINKGO_BUILD_EXAMPLES)
+    find_package(Ginkgo 1.5.0 REQUIRED)
 endif()
+find_package(OpenCV REQUIRED)
+
+add_executable(schroedinger-splitting schroedinger-splitting.cpp)
+target_link_libraries(schroedinger-splitting Ginkgo::ginkgo ${OpenCV_LIBS})
+
+# Copy the data files to the execution directory
+configure_file(../../matrices/examples/gko_logo_2d.mtx data/gko_logo_2d.mtx COPYONLY)
+configure_file(../../matrices/examples/gko_text_2d.mtx data/gko_text_2d.mtx COPYONLY)