Hi, I'm trying to embed v8, currently via prebuilding v8 shared libraries
and linking with them. Currently on Linux.
Unfortunately, when use_custom_libcxx=true (seems to be the gm.py
default?), I'm getting undefined symbols. stderr: ld.lld: error: undefined
symbol: v8::platform::NewDefaultPlatform(int,
v8::platform::IdleTaskSupport, v8::platform::InProcessStackDumping,
std::unique_ptr<v8::TracingController,
std::default_delete<v8::TracingController> >)
nm -gAC libv8_libplatform.so | grep "v8::platform::NewDefaultPlatform"
shows:
libv8_libplatform.so:0000000000013240 T
v8::platform::NewDefaultPlatform(int, v8::platform::IdleTaskSupport,
v8::platform::InProcessStackDumping,
std::__Cr::unique_ptr<v8::TracingController,
std::__Cr::default_delete<v8::TracingController> >)
So my build system is expecting std::unique_ptr for NewDefaultPlatform(),
and the shared lib uses std::__Cr.
My current solution is to try to avoid using the custom toolchain
via use_custom_libcxx=false
gn args:
is_component_build=true
use_custom_libcxx=false
is_debug = false
v8_use_external_startup_data = false
v8_enable_backtrace = true
v8_enable_disassembler = true
v8_enable_object_print = true
v8_enable_verify_heap = true
dcheck_always_on = false
However, I'm seeing this error from the system toolchain: version
`GLIBCXX_3.4.26' not found (required by ./torque) I'd like to pass a path
to the same toolchain that my build system is using. So I imagine I need a
way to pass a specific path into gm/gn. Is there any way to do this?
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