hip::host not working for NVIDIA platforms

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I can reproduce this in containers started from the rocm/dev-ubuntu-24.04:6.3.2 base image.

After configuring the posted sample project, I re-ran cmake . --trace-expand 2>log in the build tree.

On an AMD platform, the log shows the hip::host target getting built, and the /opt/rocm/include include directory added:

/opt/rocm/lib/cmake/hip/hip-targets.cmake(59):  add_library(hip::amdhip64 SHARED IMPORTED )
...
/opt/rocm/lib/cmake/hip/hip-targets.cmake(66):  add_library(hip::host INTERFACE IMPORTED )
/opt/rocm/lib/cmake/hip/hip-targets.cmake(68):  set_target_properties(hip::host PROPERTIES INTERFACE_LINK_LIBRARIES hip::amdhip64 )
...
/opt/rocm/lib/cmake/hip/hip-config-amd.cmake(136):  set_target_properties(hip::amdhip64 PROPERTIES INTERFACE_INCLUDE_DIRECTORIES /opt/rocm/include INTERFACE_SYSTEM_INCLUDE_DIRECTORIES /opt/rocm/include )

The hip::host target is created under an include() in the HIP cmake package:

$ grep "^include" /opt/rocm/lib/cmake/hip/hip-config-amd.cmake
include( "${CMAKE_CURRENT_LIST_DIR}/hip-targets.cmake" )

On an NVIDIA platform, the log shows the hip::host target being created but not populated:

/opt/rocm/lib/cmake/hip/hip-config-nvidia.cmake(22):  add_library(hip::host INTERFACE IMPORTED )
...

The hip::host target is created directly in the HIP cmake package, but not populated:

$ grep -v '^#' /opt/rocm/lib/cmake/hip/hip-config-nvidia.cmake

add_library(hip::device INTERFACE IMPORTED)
add_library(hip::host INTERFACE IMPORTED)
add_library(hip::amdhip64 INTERFACE IMPORTED)

I suspect that the NVIDIA-backed implementation of HIP’s cmake package is incomplete.

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