Set rpath to libsourcekitdInProc.so on Linux

Author: norio-nomura

tools/SourceKit/CMakeLists.txt

@@ -197,6 +197,13 @@ macro(add_sourcekit_library name)
     endif()
   endif()
 
+  if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+    if(SOURCEKITLIB_SHARED)
+      set_target_properties(${name} PROPERTIES BUILD_WITH_INSTALL_RPATH TRUE)
+      set_target_properties(${name} PROPERTIES INSTALL_RPATH "$ORIGIN/../lib/swift/linux:/usr/lib/swift/linux")
+    endif()
+  endif()
+
   if("${SOURCEKITLIB_INSTALL_IN_COMPONENT}" STREQUAL "")
     if(SOURCEKITLIB_SHARED)
       set(SOURCEKITLIB_INSTALL_IN_COMPONENT tools)