PlaidML RPATH fixes (#3287)

* Added rpath setting for PlaidML backend

* Fix colons

* Separate build and install rpath

* Explicitly set target properties

CMakeLists.txt

@@ -306,12 +306,12 @@ set(NGRAPH_INSTALL_DOC "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_DOCDIR}")
 set(NGRAPH_INSTALL_BIN "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}")
 if (LINUX)
     if (DEFINED NGRAPH_RPATH)
+        set(CMAKE_BUILD_RPATH "$ORIGIN:${NGRAPH_RPATH}")
         set(CMAKE_INSTALL_RPATH "$ORIGIN:${NGRAPH_RPATH}")
     else()
+        set(CMAKE_BUILD_RPATH "$ORIGIN")
         set(CMAKE_INSTALL_RPATH "$ORIGIN")
     endif()
-    set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
-    set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 endif()
 
 #-----------------------------------------------------------------------------------------------

src/ngraph/runtime/plaidml/CMakeLists.txt

@@ -74,3 +74,11 @@ target_include_directories(plaidml_backend SYSTEM PUBLIC ${PLAIDML_INCLUDE_DIRS}
 target_link_libraries(plaidml_backend PUBLIC ngraph libplaidml)
 install(TARGETS plaidml_backend LIBRARY DESTINATION ${NGRAPH_INSTALL_LIB})
 
+set(CMAKE_MACOSX_RPATH 1)
+if(APPLE)
+    set_property(TARGET plaidml_backend PROPERTY INSTALL_RPATH "@loader_path/;@loader_path/../../..")
+elseif(DEFINED NGRAPH_RPATH)
+    set_property(TARGET plaidml_backend PROPERTY INSTALL_RPATH "\$ORIGIN;\$ORIGIN/../../..;${NGRAPH_RPATH}")
+else()
+    set_property(TARGET plaidml_backend PROPERTY INSTALL_RPATH "\$ORIGIN;\$ORIGIN/../../..")
+endif()