[Unity] 1.4.0 预览版，导出工程xcode编译错误

[stnaw]

error log | 日志或报错信息

导出工程xcode编译错误

`Undefined symbol: std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >& std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::__assign_no_alias(char const*, unsigned long)

Undefined symbol: std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >& std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::__assign_no_alias(char const*, unsigned long)

Undefined symbol: std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::__assign_external(char const*)

Undefined symbol: std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::__erase_external_with_move(unsigned long, unsigned long)

Undefined symbol: std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >::__init_copy_ctor_external(char const*, unsigned long)`

context | 环境

unity 2021.3.6 lts
puerts 1.4.0 各个预览版本 iOS

how to reproduce | 复现步骤

直接导出iOS工程

[zombieyang]

暂时将安卓、ios的v8版本都降级了以规避该问题。preview.5版本已带上