fix archiving on xcode

CHANGELOG.md

@@ -4,6 +4,7 @@ NEXT-RELEASE Release notes (YYYY-MM-DD)
 ### Fixed
 * Using the `==` operator in a type safe query for a nullable string property would return the incorrect result when algined storage was disabled.
 * Fix compilation issue when building with Bionic due to use of std::tuple (since 2.1.0).
+* Archiving on Xcode would fail due to duplicated alias' when aligned storage was enabled.
 
 ### Enhancements
 * Add ability to use `managed<std::map<std::string, T>>` in type safe queries when comparing a value for a key. e.g.

src/cpprealm/internal/bridge/generator/bridge_type_info_generator.cpp.in

@@ -44,5 +44,8 @@ int main()
 
 @TYPE_INFO_QUERY_DECLS@
 
+    static char arch_key[] = {'a','r','c','h','_','k','e','y','_',KEY};
+    required += 1;
+
     return required;
 }

src/cpprealm/internal/bridge/generator/bridge_type_info_parser.cmake

@@ -1,14 +1,29 @@
-file(STRINGS ${BRIDGE_TYPE_INFO_BIN} compiled_string_literals REGEX "^REALM_TYPE_INFO")
+file(STRINGS ${BRIDGE_TYPE_INFO_BIN} compiled_string_literals REGEX "^(REALM_TYPE_INFO|arch_key_)")
+
+set(regex_realm "REALM_TYPE_INFO:(.+)\\[0*(.*),0*(.*)\\]")
+set(regex_arch "^arch_key_(.+)")
 
-set(regex "REALM_TYPE_INFO:(.+)\\[0*(.*),0*(.*)\\]")
 set(BRIDGE_TYPE_DECLS "")
+set(BRIDGE_TYPE_DECLS_TYPES "")
+set(BRIDGE_TYPE_DECLS_REQUIRES_ELSE_IF OFF)
 
 foreach(i ${compiled_string_literals})
-    if("${i}" MATCHES "${regex}")
-        set(BRIDGE_TYPE_DECLS "${BRIDGE_TYPE_DECLS}    using ${CMAKE_MATCH_1} = std::aligned_storage<${CMAKE_MATCH_2}, ${CMAKE_MATCH_3}>::type;\n")
+    message(STATUS "${i}")
+    if("${i}" MATCHES "${regex_realm}")
+        set(BRIDGE_TYPE_DECLS_TYPES "${BRIDGE_TYPE_DECLS_TYPES}    using ${CMAKE_MATCH_1} = std::aligned_storage<${CMAKE_MATCH_2}, ${CMAKE_MATCH_3}>::type;\n")
+    elseif("${i}" MATCHES "${regex_arch}")
+        if(BRIDGE_TYPE_DECLS_REQUIRES_ELSE_IF)
+        set(BRIDGE_TYPE_DECLS "${BRIDGE_TYPE_DECLS}#elif defined(${CMAKE_MATCH_1})\n${BRIDGE_TYPE_DECLS_TYPES}")
+        else()
+        set(BRIDGE_TYPE_DECLS "#if defined(${CMAKE_MATCH_1})\n${BRIDGE_TYPE_DECLS_TYPES}")
+        endif()
+        set(BRIDGE_TYPE_DECLS_REQUIRES_ELSE_IF ON)
+        set(BRIDGE_TYPE_DECLS_TYPES "")
     else()
-        message(FATAL_ERROR "Unrecognized type info string: " ${h})
+        message(FATAL_ERROR "Unrecognized type info string: ${i}")
     endif()
 endforeach()
 
+set(BRIDGE_TYPE_DECLS "${BRIDGE_TYPE_DECLS}#endif")
+
 configure_file(${SOURCE_DIR}/bridge_types.hpp.in ${BINARY_DIR}/bridge_types.hpp)