Yes, the component build is expected to work for every version, and our
buildbot thinks it does:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20-%20shared
The component build is also the default in Debug mode, which most V8
developers compile/use every day.
On Fri, Nov 1, 2019 at 1:00 AM Ben Ernst <boi...@gmail.com> wrote:
> Is the idea of a "component build", where you specify
> "is_component_build=true" in the arguments to GN, actually supposed to work
> at all in V8 (v7.8)?
>
> In particular, I am getting this unresolved external symbol:
>
> 1>ezv8_platform.obj : error LNK2019: unresolved external symbol
> "__declspec(dllimport) class std::unique_ptr<class v8::Platform,struct
> std::default_delete<class v8::Platform> > __cdecl
> v8::platform::NewDefaultPlatform(int,enum
> v8::platform::IdleTaskSupport,enum
> v8::platform::InProcessStackDumping,class std::unique_ptr<class
> v8::TracingController,struct std::default_delete<class
> v8::TracingController> >)" (__imp_?NewDefaultPlatform@platform@v8@
> @YA?AV?$unique_ptr@VPlatform@v8@@U?$default_delete@VPlatform@v8@@@std@
> @@std@@HW4IdleTaskSupport@12@W4InProcessStackDumping@12
> @V?$unique_ptr@VTracingController@v8@@U?$default_delete@VTracingController
> @v8@@@std@@@4@@Z) referenced in function "public: __cdecl
> ezv8::Platform::Impl::Impl(void)" (??0Impl@Platform@ezv8@@QEAA@XZ)
>
> The function "NewDefaultPlatform" seems to be exported from
> v8_libplatform.
>
> V8_PLATFORM_EXPORT std::unique_ptr<v8::Platform> NewDefaultPlatform(
> int thread_pool_size = 0,
> IdleTaskSupport idle_task_support = IdleTaskSupport::kDisabled,
> InProcessStackDumping in_process_stack_dumping =
> InProcessStackDumping::kDisabled,
> std::unique_ptr<v8::TracingController> tracing_controller = {});
>
> But the destructor of the base class, v8::Platform is not exported.
>
> /**
> * V8 Platform abstraction layer.
> *
> * The embedder has to provide an implementation of this interface before
> * initializing the rest of V8.
> */
> class Platform {
> public:
> virtual ~Platform() = default;
>
>
> I think that's the cause of the error above, although I may have
> misinterpreted the error message.
>
> Am I barking up the wrong tree by trying to use the component build at all?
>
> Thanks in advance for any advice.
>
>
>
>
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