How to solve C++ Error: ‘namespace system { }’ redeclared as different kind of symbol

[kancve]

When the ZS file has the system namespace, compilation fails.

/nds/src/system/v2022_02/types/LayerType.h:19:1: error: ‘namespace system { }’ redeclared as different kind of symbol
 {
 ^
In file included from /usr/include/c++/5/cstdlib:72:0,
                 from /usr/include/c++/5/ext/string_conversions.h:41,
                 from /usr/include/c++/5/bits/basic_string.h:5249,
                 from /usr/include/c++/5/string:52,
                 from /nds/download/runtime_libs/cpp/zserio/String.h:4,
                 from /nds/download/runtime_libs/cpp/zserio/StringConvertUtil.h:4,
                 from /nds/src/system/v2022_02/types/Types.cpp:6:
/usr/include/stdlib.h:716:12: note: previous declaration ‘int system(const char*)’
 extern int system (const char *__command) __wur;

Does this problem have anything to do with my compilation environment? Here is my docker image.

[mikir]

Namespace system cannot be the top level one in generated C++ code. To overcome this problem, we recommend to use zserio command line argument -setTopLevelPackage package_name, e.g. -setTopLevelPackage nds.

[kancve]

Okay. I understand. Thanks very much.