if DataType.TAB_TOD_DEFINES_BUILDRULEFAMILY in ToolDefinition \
                   and GenFdsGlobalVariable.ToolChainTag in ToolDefinition[DataType.TAB_TOD_DEFINES_BUILDRULEFAMILY] \
                   and ToolDefinition[DataType.TAB_TOD_DEFINES_BUILDRULEFAMILY][GenFdsGlobalVariable.ToolChainTag]:
                    GenFdsGlobalVariable.BuildRuleFamily = ToolDefinition[DataType.TAB_TOD_DEFINES_BUILDRULEFAMILY][GenFdsGlobalVariable.ToolChainTag]