NewDefaultPlatform() unresolved external symbol

[Joe Smack]

Can anyone please help me resolve this? I can't get rid of this error :\

I'm using version 7.7.299.11 of v8 and latest version of msvc.

args.gn file

is_component_build = false

is_debug = false

symbol_level = 1

target_cpu = "x64"

use_goma = false

My code:

#include <iostream>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <libplatform/libplatform.h>

#include <v8.h>

#pragma comment(lib, "v8.dll.lib")

#pragma comment(lib, "v8_libbase.dll.lib")

#pragma comment(lib, "v8_libplatform.dll.lib")

#pragma comment(lib, "icui18n.dll.lib")

#pragma comment(lib, "icuuc.dll.lib")

#pragma comment(lib, "wee8.lib")

int main()

{

if (v8::V8::InitializeICUDefaultLocation("v8 hello world.exe", "icudtl.dat") == false)

return 0;

v8::V8::InitializeExternalStartupData("natives_blob.bin", "snapshot_blob.bin");

std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();

   

return 0;

}

My error:

Severity Code Description Project File Line Suppression State

Error LNK2019 unresolved external symbol "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> >)" 

(?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 main v8 test app
C:\Users\Documents\Visual Studio 2019\projects\v8 test app\v8 test app\v8 test app.obj 1

[Jakob Kummerow]

Does it help if you follow the instructions? Specifically the part where it suggests to build v8_monolith and then link against exactly that one library.

Does #pragma comment(lib, "v8_libplatform.dll.lib") mean that you're actually linking against v8_libplatform?

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[Joe Smack]

I followed the instructions. I've tried several different setups and it just seems to me that V8's debug setup is screwed up. (Release build is fine.)

[Simon Zünd]

Could be related to the GN argument `use_custom_libcxx`. Try setting it to true. My suspicion is, that the linked std::unique_ptr from your executable doesn't match the std::unique_ptr from the V8 library.

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[Joe Smack]

That just gives me other errors. I've looked at the https://bugs.chromium.org/p/v8/issues/list and I really just think the debug build is broken right now for win 10/MSVC.

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[Ben Ernst]

Joe, I have the same problem. Static build, dynamic build, debug build, release build, I get unresolved external symbols with every build.