diff --git a/lldb/include/lldb/API/SBDefines.h b/lldb/include/lldb/API/SBDefines.h
--- a/lldb/include/lldb/API/SBDefines.h
+++ b/lldb/include/lldb/API/SBDefines.h
@@ -83,6 +83,7 @@
 class LLDB_API SBModule;
 class LLDB_API SBModuleSpec;
 class LLDB_API SBModuleSpecList;
+class LLDB_API SBPlatform;
 class LLDB_API SBProcess;
 class LLDB_API SBProcessInfo;
 class LLDB_API SBQueue;
@@ -107,6 +108,7 @@
 class LLDB_API SBTypeEnumMemberList;
 class LLDB_API SBTypeFilter;
 class LLDB_API SBTypeFormat;
+class LLDB_API SBTypeMember;
 class LLDB_API SBTypeMemberFunction;
 class LLDB_API SBTypeNameSpecifier;
 class LLDB_API SBTypeSummary;