camp-2022.03.0 isn't exporting BLT HIP targets

[cyrush]

From ascent's using-with-cmake example:

/cmake-3.23.2-linux-x86_64/bin/cmake -E cmake_link_script CMakeFiles/ascent_render_example.dir/link.txt --verbose=1
/opt/rocm/llvm/bin/amdclang++ -lm -ldl CMakeFiles/ascent_render_example.dir/ascent_render_example.cpp.o -o ascent_render_example  -Wl,-rpath,/home/user/ascent/install/lib://install/umpire-2022.03.1/lib://install/camp-2022.03.0/lib://install/vtk-m-v1.8.0/lib://install/kokkos-3.6.01/lib:/opt/rocm/lib://install/mfem-4.4/lib://install/conduit-v0.8.3/lib:/install/hdf5-1.12.2/lib /home/user/ascent/install/lib/libascent.so /home/user/ascent/install/lib/libascent_flow.so //install/umpire-2022.03.1/lib/libumpire.so //install/camp-2022.03.0/lib/libcamp.so -lblt_hip_runtime /home/user/ascent/install/lib/librover.so /home/user/ascent/install/lib/libvtkh_rendering.so /home/user/ascent/install/lib/libvtkh_filters.so /home/user/ascent/install/lib/libvtkh_compositing.so /home/user/ascent/install/lib/libvtkh_core.so /home/user/ascent/install/lib/libvtkh_utils.so /home/user/ascent/install/lib/libascent_lodepng.so //install/vtk-m-v1.8.0/lib/libvtkm_filter_extra-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_connected_components-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_contour-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_density_estimate-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_field_conversion-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_field_transform-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_geometry_refinement-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_mesh_info-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_vector_analysis-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_zfp-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_rendering-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_entity_extraction-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_clean_grid-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_image_processing-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_filter_core-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_worklet-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_io-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkm_cont-1.8.so.1 //install/vtk-m-v1.8.0/lib/libvtkmdiympi_nompi.so //install/kokkos-3.6.01/lib/libkokkoscontainers.so.3.6.01 //install/kokkos-3.6.01/lib/libkokkoscore.so.3.6.01 /usr/lib/x86_64-linux-gnu/libdl.so /opt/rocm/lib/libamdhip64.so.5.1.50103 /opt/rocm/llvm/lib/clang/14.0.0/lib/linux/libclang_rt.builtins-x86_64.a --hip-link --offload-arch=gfx90a //install/mfem-4.4/lib/libmfem.so -Wl,-rpath,//install/conduit-v0.8.3/lib -L//install/conduit-v0.8.3/lib -lconduit -Wl,-rpath,//install/conduit-v0.8.3/lib -L//install/conduit-v0.8.3/lib -lconduit_relay -Wl,-rpath,//install/conduit-v0.8.3/lib -L//install/conduit-v0.8.3/lib -lconduit_blueprint //install/conduit-v0.8.3/lib/libconduit_relay.so -lpthread -lrt /install/hdf5-1.12.2/lib/libhdf5.so.200.2.0 -lm -ldl //install/conduit-v0.8.3/lib/libconduit_blueprint.so //install/conduit-v0.8.3/lib/libconduit.so 
ld.lld: error: unable to find library -lblt_hip_runtime

This lead me to believe that I wasn't exporting blt's hip targets correctly and to mistakenly re-export them again, which landed me in a confused state (LLNL/blt#591)

Backing up a few steps, i saw:

//install/camp-2022.03.0/lib/libcamp.so -lblt_hip_runtime

Then, looking at camps generated cmake exports:

# Create imported target camp
add_library(camp SHARED IMPORTED)

set_target_properties(camp PROPERTIES
  INTERFACE_COMPILE_FEATURES "cxx_std_14"
  INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"
  INTERFACE_LINK_LIBRARIES "blt_hip_runtime"
)

compared to raja's

set_target_properties(RAJA::blt_hip_runtime PROPERTIES
  INTERFACE_COMPILE_DEFINITIONS "__HIP_PLATFORM_HCC__=1;__HIP_PLATFORM_AMD__=1"
  INTERFACE_INCLUDE_DIRECTORIES "/opt/rocm/include;/opt/rocm/include"
  INTERFACE_LINK_LIBRARIES "hip::amdhip64;/opt/rocm/llvm/lib/clang/14.0.0/lib/linux/libclang_rt.builtins-x86_64.a"
  INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "/opt/rocm/include"
)
...
set_target_properties(RAJA PROPERTIES
  INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"
  INTERFACE_LINK_LIBRARIES "RAJA::blt_hip;RAJA::blt_hip_runtime;RAJA::rocPRIM;camp;dl"
)

Reviewing camp's setup - when using blt targets here:

https://github.com/LLNL/camp/blob/3a7486edb8b1c50ce36ecace56384d32a1009e4f/CMakeLists.txt#L75

There needs to be additional logic to export them like:

https://github.com/LLNL/RAJA/blob/a60ce492c9b4a8d21bbc1d83630e5d1264083cec/cmake/SetupPackages.cmake#L107

or else folks downstream w/o blt won't be able to use cmake to compile when camp is a dependency.

[cyrush]

resolved with changes in #987 and using camp 2022.03.2