My full gn args are as follows:
is_debug = false
target_cpu = "x64"
treat_warnings_as_errors=false
is_component_build=true
v8_enable_i18n_support=false
v8_use_snapshot=true
use_custom_libcxx=false
is_clang=false
But when I try to build V8 (n.b. on Windows) (n.b. V8 version 7.8.279) I
get the following errors (among many others):
[exec] [7/685] LINK bytecode_builtins_list_generator.exe
bytecode_builtins_list_generator.exe.pdb
[exec] FAILED: bytecode_builtins_list_generator.exe
bytecode_builtins_list_generator.exe.pdb
[exec]
C:/6faf51f1/depot_tools/bootstrap-3_8_0b1_chromium_1_bin/python/bin/python.exe
../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64
False link.exe /nologo /OUT:./bytecode_builtins_list_generator.exe
/PDB:./bytecode_builtins_list_generator.exe.pdb
@./bytecode_builtins_list_generator.exe.rsp
[exec] generate-bytecodes-builtins-list.obj : error LNK2019:
unresolved external symbol "class v8::internal::Isolate * __cdecl
v8::internal::IsolateFromNeverReadOnlySpaceObject(unsigned __int64)"
(?IsolateFromNeverReadOnlySpaceObject@internal@v8@@YAPEAVIsolate@12@_K@Z)
referenced in function "public: class v8::Local<class v8::Value> __cdecl
v8::Context::GetEmbedderData(int)"
(?GetEmbedderData@Context@v8@@QEAA?AV?$Local@VValue@v8@@@2@H@Z)
[exec] bytecode-operands.obj : error LNK2001: unresolved external
symbol "class v8::internal::Isolate * __cdecl
v8::internal::IsolateFromNeverReadOnlySpaceObject(unsigned __int64)"
(?IsolateFromNeverReadOnlySpaceObject@internal@v8@@YAPEAVIsolate@12@_K@Z)
[exec] bytecodes.obj : error LNK2001: unresolved external symbol
"class v8::internal::Isolate * __cdecl
v8::internal::IsolateFromNeverReadOnlySpaceObject(unsigned __int64)"
(?IsolateFromNeverReadOnlySpaceObject@internal@v8@@YAPEAVIsolate@12@_K@Z)
[exec] generate-bytecodes-builtins-list.obj : error LNK2019:
unresolved external symbol "public: __cdecl
v8::HandleScope::~HandleScope(void)" (??1HandleScope@v8@@QEAA@XZ)
referenced in function "public: __cdecl
v8::EscapableHandleScope::~EscapableHandleScope(void)"
(??1EscapableHandleScope@v8@@QEAA@XZ)
What could I be doing wrong? Any suggestions appreciated.
On Wednesday, 6 November 2019 21:30:10 UTC+10:30, Ben Ernst wrote:
>
> Thanks Hans, I'm sure I tried that before, but I'll give that a shot
> again. Ben.
>
> On Monday, 4 November 2019 17:46:08 UTC+10:30, Hans Maier wrote:
>>
>> Hi,
>>
>> the libc provided together with v8 is incompatible with the msvc-libc.
>> I had to provide "use_custom_libcxx=false" to be able to link it with my
>> own program.
>>
>>
>> Am Sonntag, 3. November 2019 12:43:57 UTC+1 schrieb Ben Ernst:
>>>
>>> Of note, the sample utilities "d8" and "v8_hello_world" build fine, and
>>> they don't get this same linker error. I can't see anything I'm doing
>>> differently, however.
>>>
>>> On Sunday, 3 November 2019 22:08:27 UTC+10:30, Ben Ernst wrote:
>>>>
>>>> Thanks Jakob, is there by any chance a correpsonding buildbot for
>>>> Windows and MSVC++? I get this linker error from it seems V8 7.2 onwards,
>>>> although I'm focussing on 7.8. The "monolith" build seems to be working
>>>> though. I wonder if it's an MSVC++ peculiarity that is tripping me up?
>>>> Regards,
>>>> Ben
>>>>
>>>> On Saturday, 2 November 2019 02:17:38 UTC+10:30, Jakob Kummerow wrote:
>>>>>
>>>>> 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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