[BUG] Outdated vdb_tool OpenEXR import target

[efleurant]

Environment

Rocky Linux 9.4
master, v11.0.0, v12.0.0:
GCC: 11.4.1
cmake: 3.27.8
C++ standard: c++ 17

Describe the bug

I noticed that the CMake configuration for vdb_tool uses OpenEXR::IlmImf as one of the imported targets. This target was previously part of OpenEXR but is no longer available in recent versions, as the project has consolidated its libraries. The correct target to use should now be OpenEXR::OpenEXR.

You might want to update the CMakeLists.txt as follows to ensure compatibility with newer OpenEXR versions:

openvdb/openvdb_cmd/vdb_tool/CMakeLists.txt

Line 111 in 7d44132

target_link_libraries(vdb_tool_common INTERFACE OpenEXR::IlmImf)

if(OPENVDB_TOOL_USE_EXR)
  target_compile_definitions(vdb_tool_common INTERFACE "VDB_TOOL_USE_EXR")
  find_package(OpenEXR REQUIRED)
  target_link_libraries(vdb_tool_common INTERFACE OpenEXR::OpenEXR)
endif()

Thanks in advance,
Cheers