On Sat, Feb 29, 2020 at 5:26 AM YQ Tian <tianyuqiu123...@gmail.com> wrote:>
> Thank you for your reply. It is currently found that when I upgrade v8 to 
> 6.8, the dynamic_cast function of my other dynamic library will call the 
> has_unambiguous_public_base function in the v8 library. Normally, the C ++ 
> standard library should be called. This phenomenon is very strange. I Compile 
> the monolith version into multiple libraries according to the previous 
> compilation method. Use the following command
>
> `gn gen out.gn/x64.release --args='is_debug=false target_cpu="x64" 
> v8_static_library=true v8_use_external_startup_data=false'`
>
> `ninja -C out.gn/x64.release`
>
> However, when the v8 library is introduced into the program, a link error 
> occurs. Some symbols like c ++ abi cannot be linked. Will the upgrade you 
> said solve this problem? Or do my compilation commands need to be modified?

V8 links to its own copy of libc++ unless told otherwise. I believe
it's the use_custom_libcxx=false option.

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