libplatform currently does not support dynamic linking.
On Tue, Sep 20, 2016 at 7:43 PM Andre Cunha <andre.lv.cu...@gmail.com>
wrote:
> Hello,
>
> I'm trying to dynamically load libplatform in an application I'm writing.
> I searched through the available gn options, but I couldn't find an option
> to build libplatform as a shared object, so I did it by hand:
>
> $ gcc -shared -o libv8_libplatform.so obj/v8_lib{platform,base}/*.o
>
> I use this both in debug and in release mode, but when I link my
> application against libplatform in release mode, I get "undefined reference
> to `v8::platform::CreateDefaultPlatform(int)`". This doesn't happen in
> debug mode. After some investigation, I realized that the aforementioned
> function is exported in debug mode, but is hidden in release mode:
>
> # Debug
> $ nm -C libv8_libplatform.so | grep CreateDefaultPlatform
> 000000000001ad70 *T* v8::platform::CreateDefaultPlatform(int)
>
> # Release
> $ nm -C libv8_libplatform.so | grep CreateDefaultPlatform
> 0000000000003b20 *t* v8::platform::CreateDefaultPlatform(int)
>
> I inspected the ninja files, and realized this happens because object
> files are compiled with -fvisibility=default in debug mode, and with
> -fvisibility=hidden in release mode.
>
> So, my question is: is this function not supposed to be used in release
> applications? Should I, then, link statically against the many individual
> .o files needed (as the hello-world.cc example does)? If so, what's the
> best way to do this?
>
> Thanks in advance,
> Andre
>
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