USD bakes full SDK path to INTERFACE_LINK_LIBRARIES in pxrTargets.cmake

[dgovil]

pxrTargets.cmake bakes in the full path to an SDK library during the build which means that the final build isn't portable to build other stuff against unless all the machines have the same SDK versions available.

Unfortunately that means that if someone upgrades their OS, they won't have the same SDK versions available, and will therefore be unable to compile without modifying the targets file.

It would be great if USD used generic linkage for system libs instead of exact SDK versions

e.g

set_target_properties(arch PROPERTIES
  INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"
  INTERFACE_LINK_LIBRARIES "/Library/Developer/CommandLineTools/SDKs/MacOSX13.5.sdk/usr/lib/libm.tbd"
)
set_target_properties(garch PROPERTIES
  INTERFACE_LINK_LIBRARIES "arch;tf;/Library/Developer/CommandLineTools/SDKs/MacOSX13.5.sdk/System/Library/Frameworks/OpenGL.framework;/Library/Developer/CommandLineTools/SDKs/MacOSX13.5.sdk/System/Library/Frameworks/AppKit.framework"

)

[jesschimein]

Filed as internal issue #USD-8891

[dgovil]

Put up a PR for this