Merge branch 'h5copy_vol_testing_fetchcontent' into HEAD

Author: mattjala

.github/workflows/vol_cache.yml

@@ -161,4 +161,4 @@ jobs:
         # that this should be re-enabled in the future.
         if: ${{ ! matrix.async }}
         run: |
-          ctest --build-config ${{ inputs.build_mode }} -VV -R "HDF5_VOL_vol-cache" .
+          ctest --build-config ${{ inputs.build_mode }} -VV -R "HDF5_VOL_vol-cache" .

.github/workflows/vol_rest.yml

@@ -191,4 +191,5 @@ jobs:
           HSDS_ENDPOINT=http+unix://%2Ftmp%2Fhs%2Fsn_1.sock \
           ROOT_DIR=${{github.workspace}}/hsdsdata \
           BUCKET_NAME=hsdstest \
-          ctest --build-config ${{ inputs.build_mode }} -VV -R "h5_api" .
+          ctest --build-config ${{ inputs.build_mode }} -VV -R "h5_api" -E "H5COPY" .
+      

config/HDF5Macros.cmake

@@ -118,3 +118,30 @@ macro (H5_CREATE_VFD_DIR)
     file (MAKE_DIRECTORY "${PROJECT_BINARY_DIR}/${vfdtest}")
   endforeach ()
 endmacro ()
+
+# Given the name of a CMake target for an external VOL connector,
+# populate variables with the names vol_name_out and vol_env_out with 
+# the connector's name and the environment string needed to load the connector,
+# respectively.
+macro(HDF5_GET_VOL_TGT_INFO vol_tgt vol_name_out vol_env_out)
+  set(${vol_env_out} "")
+  # HDF5_VOL_CONNECTOR
+  get_target_property (ext_vol_name "${vol_tgt}" HDF5_VOL_NAME)
+  list(APPEND ${vol_env_out} "HDF5_VOL_CONNECTOR=${ext_vol_name}")
+
+  # HDF5_PLUGIN_PATH
+  get_target_property(vol_lib_targets "${vol_tgt}" HDF5_VOL_TARGETS)
+  set(vol_plugin_paths "${CMAKE_BINARY_DIR}/${HDF5_INSTALL_BIN_DIR}")
+  foreach (lib_target ${vol_lib_targets})
+    get_target_property (lib_target_output_dir "${lib_target}" LIBRARY_OUTPUT_DIRECTORY)
+    if (NOT "${lib_target_output_dir}" STREQUAL "lib_target_output_dir-NOTFOUND"
+        AND NOT "${lib_target_output_dir}" STREQUAL ""
+        AND NOT "${lib_target_output_dir}" STREQUAL "${CMAKE_BINARY_DIR}/${HDF5_INSTALL_BIN_DIR}")
+      set (vol_plugin_paths "${vol_plugin_paths}${CMAKE_SEP}${lib_target_output_dir}")
+    endif ()
+  endforeach ()
+  list(APPEND ${vol_env_out} "HDF5_PLUGIN_PATH=${vol_plugin_paths}")
+
+  # VOL name
+  string(REPLACE "HDF5_VOL_" "" ${vol_name_out} "${vol_tgt}")
+endmacro()