add test for downstream using with cmake via prefix path (#1136)

* add test for downstream using with cmake via prefix path

azure-pipelines.yml

@@ -572,6 +572,28 @@ stages:
           ./conduit_example
         displayName: 'Test vs Install (using-with-cmake)'
 
+      - script: |
+          #######################################
+          # using with cmake prefix path example
+          #######################################
+          export CC=${COMPILER_CC}
+          export CXX=${COMPILER_CXX}
+          export FC=${COMPILER_FC}
+          pwd
+          ls -l
+          # find spack installed cmake
+          export ROOT_DIR=`pwd`
+          export CMAKE_BIN_DIR=`ls -d ${ROOT_DIR}/uberenv_libs/spack/opt/spack/*/*/cmake*/bin`
+          export PATH=${CMAKE_BIN_DIR}:$PATH
+          echo $PATH
+          which cmake
+          cd install/examples/conduit/using-with-cmake-prefix-path
+          cmake -DCMAKE_PREFIX_PATH=${ROOT_DIR}/install  -B build -S .
+          cmake --build build
+          cd build
+          ./conduit_example
+        displayName: 'Test vs Install (using-with-cmake-prefix-path)'
+
       - script: |
           ###########################
           # using with make example

src/examples/CMakeLists.txt

@@ -13,6 +13,7 @@ add_subdirectory(staging)
 # install using and python examples
 install(DIRECTORY using-with-cmake
                   using-with-cmake-mpi
+                  using-with-cmake-prefix-path
                   using-with-make
                   python
                   cpp_fort_and_py

src/examples/using-with-cmake-prefix-path/CMakeLists.txt

@@ -0,0 +1,57 @@
+# Copyright (c) Lawrence Livermore National Security, LLC and other Conduit
+# Project developers. See top-level LICENSE AND COPYRIGHT files for dates and
+# other details. No copyright assignment is required to contribute to Conduit.
+###############################################################################
+#
+# Example that shows how to use an installed instance of Conduit passed 
+# via cmake prefix path in another CMake-based build system.
+#
+# To build:
+#  cmake -DCMAKE_PREFIX_PATH={conduit install path} ../ -B build -S .
+#  cmake --build build 
+#  cd build
+#  ./conduit_example
+#
+#
+###############################################################################
+
+cmake_minimum_required(VERSION 3.0)
+
+project(using_with_cmake_prefix_path)
+
+################################################################
+# Import conduit using find_package search
+################################################################
+#
+# Add Conduit's install path to CMAKE_PREFIX_PATH 
+# and use following find_package call to import conduit's targets
+#
+find_package(Conduit REQUIRED)
+
+
+######
+# If Conduit was built with c++11 support, make sure we enable it
+######
+if(CONDUIT_USE_CXX11)
+    set(CMAKE_CXX_STANDARD 11)
+    set(CMAKE_CXX_STANDARD_REQUIRED ON)
+endif()
+
+#######################################################
+# create our example 
+#######################################################
+add_executable(conduit_example conduit_example.cpp)
+
+# link to conduit targets
+target_link_libraries(conduit_example conduit::conduit)
+
+# if you are using conduit's python CAPI capsule interface
+# target_link_libraries(conduit_example conduit::conduit_python)
+
+
+# if you are using conduit's mpi features
+# if(NOT MPI_FOUND)
+#    find_package(MPI COMPONENTS CXX)
+# endif()
+# target_link_libraries(conduit_example conduit::conduit_mpi)
+

src/examples/using-with-cmake-prefix-path/conduit_example.cpp

@@ -0,0 +1,29 @@
+// Copyright (c) Lawrence Livermore National Security, LLC and other Conduit
+// Project developers. See top-level LICENSE AND COPYRIGHT files for dates and
+// other details. No copyright assignment is required to contribute to Conduit.
+
+//-----------------------------------------------------------------------------
+///
+/// file: conduit_example.cpp
+///
+//-----------------------------------------------------------------------------
+
+#include <iostream>
+
+#include "conduit.hpp"
+#include "conduit_relay.hpp"
+#include "conduit_blueprint.hpp"
+
+
+int main(int argc, char **argv)
+{
+    conduit::Node about;
+    conduit::about(about["conduit"]);
+    conduit::relay::about(about["conduit/relay"]);
+    conduit::relay::io::about(about["conduit/relay/io"]);
+    conduit::blueprint::about(about["conduit/blueprint"]);
+
+    std::cout << about.to_yaml() << std::endl;
+}
+
+

src/examples/using-with-cmake/conduit_example.cpp

@@ -4,7 +4,7 @@
 
 //-----------------------------------------------------------------------------
 ///
-/// file: example.cpp
+/// file: conduit_example.cpp
 ///
 //-----------------------------------------------------------------------------
 

src/examples/using-with-make/conduit_example.cpp

@@ -4,7 +4,7 @@
 
 //-----------------------------------------------------------------------------
 ///
-/// file: example.cpp
+/// file: conduit_example.cpp
 ///
 //-----------------------------------------------------------------------------