[CMake] Establish a dependency from standard library variants onto 'libSwiftScan'

Now that the 'libSwiftScan' target is configured as part of 'tooling-libraries' instead of 'tools', we can establish a dependency link on it to ensure that the just-built compiler used to compile the standard-library sources can rely on the dependency scanner shared library having been built.

Author: artemcm

CMakeLists.txt

@@ -1471,6 +1471,7 @@ if(SWIFT_ENABLE_DISPATCH)
 endif()
 
 # Add all of the subdirectories, where we actually do work.
+add_subdirectory(tooling-libraries)
 
 ###############
 # PLEASE READ #

stdlib/public/core/CMakeLists.txt

@@ -403,18 +403,14 @@ if(BOOTSTRAPPING_MODE STREQUAL "BOOTSTRAPPING")
                     BOOTSTRAPPING 1)
 endif()
 
-set(tooling_stdlib_deps)
-if(TARGET libSwiftScan)
-  list(append tooling_stdlib_deps libSwiftScan)
-endif()
-
 add_swift_target_library(swiftCore
                   ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES}
                   ${swiftCore_common_options}
                   ${compile_flags_for_final_build}
                   FILE_DEPENDS
                     ${swiftCore_common_dependencies}
-                  DEPENDS ${tooling_stdlib_deps}
+                  DEPENDS
+                    libSwiftScan
                   INSTALL_IN_COMPONENT
                     stdlib
                   MACCATALYST_BUILD_FLAVOR
@@ -457,7 +453,7 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB)
       SDK "embedded"
       ARCHITECTURE "${arch}"
       FILE_DEPENDS ${swiftCore_common_dependencies}
-      DEPENDS ${tooling_stdlib_deps}
+      DEPENDS libSwiftScan
       INSTALL_IN_COMPONENT stdlib
       )
     add_dependencies(embedded-stdlib embedded-stdlib-${mod})