find_package kokkoskernels in top-level cmakelists

Author: euphoricpoptarts

CMakeLists.txt

@@ -6,6 +6,9 @@ if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
 endif()
 
+# both the apps and the library depend on kokkos and kokkoskernels
+# find KokkosKernels also handles kokkos
+find_package(KokkosKernels REQUIRED)
 add_compile_options(-Wall -Wextra -Wshadow)
 add_subdirectory(src)
 add_subdirectory(app)

app/CMakeLists.txt

@@ -25,9 +25,9 @@ target_compile_definitions(jet_export PUBLIC HOST EXP)
 target_compile_definitions(jet_serial PUBLIC SERIAL)
 
 # link executables
-find_package(KokkosKernels REQUIRED)
 target_link_libraries(jet_import Kokkos::kokkos Kokkos::kokkoskernels)
 target_link_libraries(pstat Kokkos::kokkos Kokkos::kokkoskernels)
+# other executables get the kokkos dependencies via jet
 foreach(prog jet_ex jet4 jet2 jet_host jet_export jet_serial)
     target_link_libraries(${prog} jet)
 endforeach(prog)

src/CMakeLists.txt

@@ -26,7 +26,6 @@ endif()
 
 # link libjet (for downstream library consumers)
 # no linking actually occurs for libjet itself
-find_package(KokkosKernels REQUIRED)
 target_link_libraries(jet PUBLIC Kokkos::kokkos Kokkos::kokkoskernels)
 target_link_libraries(jet PRIVATE ${LIBMETIS})
 if(LINK_GKLIB)