There are two related GN args: clang_base_path = "/usr" clang_use_chrome_plugins = false
which I've successfully used to use the system-installed Clang on an arm64 device for which we have no prebuilt toolchain. I haven't seen the specific error you're reporting before though, so I'm not sure whether this helps in your case. On Wed, Feb 9, 2022 at 4:00 AM Jeff Witthuhn <jeffdw...@gmail.com> wrote: > 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? > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-users/CAKSzg3Rfy6L7nTQHwc4dN8rYNvjm-TbBzuWf-tEyf8iaBgmTrw%40mail.gmail.com.
