If you look at the symbols in your libs is it in there anywhere? On Saturday, December 30, 2017 at 10:01:28 AM UTC-8, Bogdan Padalko wrote: > > Thanks for quick reply! Unfortunately, it's the same. I ended up with > hello world example after to trying out to use NewDefaultPlatform with > php-v8 ( > https://github.com/pinepain/php-v8/blob/53a562e10c23e5f835b2ccdb20967f9c4aef529e/src/php_v8_a.cc#L34), > > which yield me there > > /home/vagrant/.phpbrew/php/7.2-debug/bin/php: symbol lookup error: /home/ > vagrant/php-v8/modules/v8.so: undefined symbol: > _ZN2v88platform18NewDefaultPlatformEiNS0_15IdleTaskSupportENS0_21InProcessStackDumpingESt10unique_ptrINS_17TracingControllerESt14default_deleteIS4_EE > > With CreateDefaultPlatform it works just fine, and there was no other > changes to sources except of using v8 6.5.116 and using NewDefaultPlatform. > Bare 6.5.116 with CreateDefaultPlatform works fine. > > > On Saturday, December 30, 2017 at 7:28:25 PM UTC+2, Ben Noordhuis wrote: >> >> On Sat, Dec 30, 2017 at 5:54 PM, Bogdan Padalko <zaq17...@gmail.com> >> wrote: >> > Hi! >> > >> > I'm trying to adapt changes from >> > >> https://github.com/v8/v8/commit/ffee558e14e28fc8b1f9a3c10ea3615e0d686c7b >> to >> > replace CreateDefaultPlatform with NewDefaultPlatform calls, however, >> for >> > some reason I'm getting >> > >> > /home/vagrant/php-v8/scripts/test_v8/hello_world.cpp:21: undefined >> reference >> > to `v8::platform::NewDefaultPlatform(int, >> v8::platform::IdleTaskSupport, >> > v8::platform::InProcessStackDumping, >> std::unique_ptr<v8::TracingController, >> > std::default_delete<v8::TracingController> >)' >> > >> > error with the following code: >> > >> > #include <v8.h> >> > #include <libplatform/libplatform.h> >> > >> > #include <stdlib.h> >> > #include <string.h> >> > >> > using namespace v8; >> > >> > void weak_callback(const >> v8::WeakCallbackInfo<v8::Persistent<v8::String>>& >> > data) { >> > printf("Weak callback called\n"); >> > data.GetParameter()->Reset(); >> > } >> > >> > int main(int argc, char* argv[]) { >> > // Initialize V8. >> > v8::V8::InitializeICU(); >> > // v8::Platform *platform = v8::platform::CreateDefaultPlatform(); >> > // v8::V8::InitializePlatform(platform); >> > >> > std::unique_ptr<v8::Platform> platform = >> > v8::platform::NewDefaultPlatform(); >> > v8::V8::InitializePlatform(platform.get()); >> > >> > V8::Initialize(); >> > >> > v8::Isolate::CreateParams create_params; >> > create_params.array_buffer_allocator = >> > v8::ArrayBuffer::Allocator::NewDefaultAllocator(); >> > >> > // Create a new Isolate and make it the current one. >> > Isolate* isolate = v8::Isolate::New(create_params); >> > >> > v8::Persistent<v8::String> test; >> > >> > { >> > Isolate::Scope isolate_scope(isolate); >> > >> > // Create a stack-allocated handle scope. >> > HandleScope handle_scope(isolate); >> > >> > // Create a new context. >> > Local<Context> context = Context::New(isolate); >> > >> > // Enter the context for compiling and running the hello world >> script. >> > Context::Scope context_scope(context); >> > >> > >> > test.Reset(isolate, String::NewFromUtf8(isolate, "Hello' + ', >> > World!'")); >> > test.SetWeak(&test, weak_callback, >> v8::WeakCallbackType::kParameter); >> > >> > >> > // Create a string containing the JavaScript source code. >> > Local<String> source = String::NewFromUtf8(isolate, "(2+2*2) + ' ' >> + >> > 'Hello' + ', World!'"); >> > >> > // Compile the source code. >> > Local<Script> script = Script::Compile(source); >> > >> > // Run the script to get the result. >> > Local<Value> result = script->Run(); >> > >> > // Convert the result to an UTF8 string and print it. >> > String::Utf8Value utf8(isolate, result); >> > printf("%s\n", *utf8); >> > } >> > >> > isolate->LowMemoryNotification(); >> > >> > >> > // Dispose the isolate and tear down V8. >> > isolate->Dispose(); >> > V8::Dispose(); >> > V8::ShutdownPlatform(); >> > >> > return 0; >> > } >> > >> > build script: >> > >> > #!/bin/bash >> > >> > ROOT=/opt/libv8-6.5 >> > LIB_DIR=$ROOT/lib/ >> > >> > SRC_DIR=$ROOT >> > INCLUDE_DIR=$ROOT/include >> > >> > set -x >> > >> > g++ -std=c++14 hello_world.cpp -o hello_world \ >> > -g \ >> > -O2 \ >> > -std=c++11 \ >> > -I$INCLUDE_DIR \ >> > -L$LIB_DIR \ >> > -Wl,-rpath,$LIB_DIR \ >> > -lv8_libbase \ >> > -lv8_libplatform \ >> > -lv8 \ >> > -lpthread >> > >> > I use v8 build with the following params: >> > >> > gn gen out.gn/x64.release --args="is_debug=false >> is_component_build=true >> > v8_use_external_startup_data=false" >> > ninja -v d8 -C out.gn/x64.release >> > >> > Host is x64 Ubuntu 16.04, libv8 installed from my pinepain/libv8-6.5 >> PPA >> > (https://launchpad.net/~pinepain/+archive/ubuntu/libv8-6.5) >> > >> > I'd really appreciate if anybody give it a look and provide some >> suggestions >> > as after spending two days with this I think I just missing something >> very >> > simple and obvious. >> > >> > Regards, >> > Bogdan >> >> It sounds like a link order issue. What happens when you put `-o >> hello_world` last? >> >
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