Fix CMake files in libcudf C++ examples to use existing libcudf build if present

cpp/examples/basic/CMakeLists.txt

@@ -1,7 +1,9 @@
-# Copyright (c) 2020-2023, NVIDIA CORPORATION.
+# Copyright (c) 2020-2024, NVIDIA CORPORATION.
 
 cmake_minimum_required(VERSION 3.26.4)
 
+include(../set_cuda_architecture.cmake)
+
 project(
   basic_example
   VERSION 0.0.1

cpp/examples/build.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# Copyright (c) 2021-2023, NVIDIA CORPORATION.
+# Copyright (c) 2021-2024, NVIDIA CORPORATION.
 
 # libcudf examples build script
 
@@ -20,7 +20,7 @@ build_example() {
   build_dir="${example_dir}/build"
 
   # Configure
-  cmake -S ${example_dir} -B ${build_dir} -Dcudf_ROOT="${LIB_BUILD_DIR}"
+  cmake -S ${example_dir} -B ${build_dir} -Dcudf_ROOT="${LIB_BUILD_DIR}" -DCUDF_TAG=branch-24.06
   # Build
   cmake --build ${build_dir} -j${PARALLEL_LEVEL}
 }

cpp/examples/fetch_dependencies.cmake

@@ -11,20 +11,25 @@
 # or implied. See the License for the specific language governing permissions and limitations under
 # the License.
 # =============================================================================
-set(CPM_DOWNLOAD_VERSION v0.35.3)
+set(CPM_DOWNLOAD_VERSION v0.38.5)
 file(
   DOWNLOAD
   https://github.com/cpm-cmake/CPM.cmake/releases/download/${CPM_DOWNLOAD_VERSION}/get_cpm.cmake
   ${CMAKE_BINARY_DIR}/cmake/get_cpm.cmake
 )
 include(${CMAKE_BINARY_DIR}/cmake/get_cpm.cmake)
 
-set(CUDF_TAG branch-24.06)
+# allow using local packages if already installed
+set(CPM_USE_LOCAL_PACKAGES ON)
+
+# find or build it via CPM
 CPMFindPackage(
-  NAME cudf GIT_REPOSITORY https://github.com/rapidsai/cudf
+  NAME cudf
+  FIND_PACKAGE_ARGUMENTS "HINTS ${cudf_ROOT}/latest"
+  GIT_REPOSITORY https://github.com/rapidsai/cudf
   GIT_TAG ${CUDF_TAG}
   GIT_SHALLOW
     TRUE
     SOURCE_SUBDIR
     cpp
-)
+  )

cpp/examples/nested_types/CMakeLists.txt

@@ -1,7 +1,9 @@
-# Copyright (c) 2023, NVIDIA CORPORATION.
+# Copyright (c) 2023-2024, NVIDIA CORPORATION.
 
 cmake_minimum_required(VERSION 3.26.4)
 
+include(../set_cuda_architecture.cmake)
+
 project(
   nested_types
   VERSION 0.0.1

cpp/examples/set_cuda_architecture.cmake

@@ -0,0 +1,24 @@
+# =============================================================================
+# Copyright (c) 2023-2024, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+# in compliance with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License
+# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing permissions and limitations under
+# the License.
+# =============================================================================
+if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/basic_example_RAPIDS.cmake)
+  file(DOWNLOAD https://raw.githubusercontent.com/rapidsai/rapids-cmake/${CUDF_TAG}/RAPIDS.cmake
+    ${CMAKE_CURRENT_BINARY_DIR}/basic_example_RAPIDS.cmake)
+endif()
+include(${CMAKE_CURRENT_BINARY_DIR}/basic_example_RAPIDS.cmake)
+
+include(rapids-cuda)
+
+# initialize cuda architectures
+rapids_cuda_init_architectures(basic_examples)
+rapids_cuda_set_architectures(RAPIDS)

cpp/examples/strings/CMakeLists.txt

@@ -1,7 +1,9 @@
-# Copyright (c) 2022-2023, NVIDIA CORPORATION.
+# Copyright (c) 2022-2024, NVIDIA CORPORATION.
 
 cmake_minimum_required(VERSION 3.26.4)
 
+include(../set_cuda_architecture.cmake)
+
 project(
   strings_examples
   VERSION 0.0.1