diff --git a/BUILD.bazel b/BUILD.bazel
index b00b650ffeb..e55ae6f64d9 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -83,6 +83,42 @@ swift_syntax_test(
     ],
 )
 
+swift_syntax_library(
+    name = "SwiftIfConfig",
+    deps = [
+        ":SwiftDiagnostics",
+        ":SwiftOperators",
+        ":SwiftSyntax",
+        ":SwiftSyntaxBuilder",
+    ],
+)
+
+swift_syntax_test(
+    name = "SwiftIfConfigTest",
+    deps = [
+        ":SwiftIfConfig",
+        ":SwiftParser",
+        ":SwiftSyntaxMacrosGenericTestSupport",
+        ":_SwiftSyntaxTestSupport",
+    ],
+)
+
+swift_syntax_library(
+    name = "SwiftLexicalLookup",
+    deps = [
+        ":SwiftIfConfig",
+        ":SwiftSyntax",
+    ],
+)
+
+swift_syntax_test(
+    name = "SwiftLexicalLookupTest",
+    deps = [
+        ":SwiftLexicalLookup",
+        ":_SwiftSyntaxTestSupport",
+    ],
+)
+
 swift_syntax_library(
     name = "SwiftLibraryPluginProvider",
     deps = [
@@ -197,6 +233,13 @@ swift_syntax_library(
     ],
 )
 
+swift_syntax_library(
+    name = "SwiftSyntax601",
+    srcs = glob(["Sources/VersionMarkerModules/SwiftSyntax601/**/*.swift"]),
+    deps = [
+    ],
+)
+
 swift_syntax_library(
     name = "SwiftSyntaxBuilder",
     deps = [