Hello again, Today I decided to spin up a virtual machine and give it a try on a linux environment (instead of OS X),
On a fresh install of Ubuntu 20.04 + build tools (make, clang, etc...), I fetch the latest v8 with depot_tools/git and try to compile v8, I have found the exact same issues as my OS X system: * Same symbols missing on libv8_libbase and libv8_libplatform * When I do a monolithic release and link against libv8_monolith, the symbols are there and I can compile, but when I run the program it gets stuck (forever?) on `v8::V8::Initialize()`. Any comments? Anybody has compiled v8 from source (and from scratch) recently? Alex. On Tue, Jun 2, 2020 at 3:30 PM Al Mo <almos...@gmail.com> wrote: > The mystery deepens, > > I can compile/link against the monolith library, > > I am trying to run the hello-world.cc sample, only change I made is I > added `#define V8_COMPRESS_POINTERS` (but also tried without it and using a > v8 compiled w/o pointer compression), > > The program gets stuck when I call `v8::V8::Initialize();`, > > I plug Instruments into and I see this: > > [image: image.png] > > I tried compiling a debug version to get more info but it fails very bad > if I try the monolith thing, w/o monolith I run into the same issue of > missing symbols, > > Any idea on what could be going on? Or how to debug it further? Willing to > put time into this :) > > Alex. > > On Tue, Jun 2, 2020 at 1:58 PM Al Mo <almos...@gmail.com> wrote: > >> Update, >> >> Just finished a monolithic build and got a 'libv8_monolith.a', when I >> link against it everything works, that will do for me, >> >> If you wish me to continue doing some research on to why it wasn't >> working the other way, let me know what to do, >> >> Thanks all, >> Alex. >> >> On Tue, Jun 2, 2020 at 12:49 PM Al Mo <almos...@gmail.com> wrote: >> >>> Update: >>> >>> Full output of clean build: >>> >>> # mkdir -p out/x64.release >>> >>> # echo > out/x64.release/args.gn << EOF >>> >>> is_component_build = false >>> >>> is_debug = false >>> >>> target_cpu = "x64" >>> >>> use_goma = false >>> >>> goma_dir = "None" >>> >>> v8_enable_backtrace = true >>> >>> v8_enable_disassembler = true >>> >>> v8_enable_object_print = true >>> >>> v8_enable_verify_heap = true >>> >>> EOF >>> >>> # gn gen out/x64.release >>> >>> Done. Made 148 targets from 86 files in 751ms >>> >>> # autoninja -C out/x64.release d8 >>> >>> ninja: Entering directory `out/x64.release' >>> >>> [1450/1450] LINK ./d8 >>> >>> Done! - V8 compilation finished successfully. >>> >>> >>> On Tue, Jun 2, 2020 at 12:01 PM Al Mo <almos...@gmail.com> wrote: >>> >>>> Thank you both for your replies, >>>> >>>> After a clean build, here's the output of `ls -l ...`: >>>> >>>> total 137768 >>>> >>>> -rw-r--r-- 1 krrrunch staff 214 Jun 1 12:29 args.gn >>>> >>>> -rw-r--r-- 1 krrrunch staff 23922 Jun 1 20:17 build.ninja >>>> >>>> -rw-r--r-- 1 krrrunch staff 3183 Jun 1 20:17 build.ninja.d >>>> >>>> -rwxr-xr-x 1 krrrunch staff 431628 Jun 1 20:21 >>>> bytecode_builtins_list_generator >>>> >>>> -rwxr-xr-x 1 krrrunch staff 26017224 Jun 1 20:54 d8 >>>> >>>> drwxr-xr-x 7 krrrunch staff 224 Jun 1 20:54 gen >>>> >>>> -rwxr-xr-x 1 krrrunch staff 1318244 Jun 1 20:36 >>>> gen-regexp-special-case >>>> >>>> -rw-r--r-- 3 krrrunch staff 10507280 Jun 1 10:31 icudtl.dat >>>> >>>> -rwxr-xr-x 1 krrrunch staff 29522824 Jun 1 20:54 mksnapshot >>>> >>>> drwx------ 105 krrrunch staff 3360 Jun 1 20:54 obj >>>> >>>> -rw-r--r-- 1 krrrunch staff 51188 Jun 1 20:54 >>>> snapshot_blob.bin >>>> >>>> -rw-r--r-- 1 krrrunch staff 80153 Jun 1 20:17 toolchain.ninja >>>> >>>> -rwxr-xr-x 1 krrrunch staff 2557812 Jun 1 20:21 torque >>>> >>>> -rw-r--r-- 1 krrrunch staff 523 Jun 1 20:20 >>>> v8_build_config.json >>>> >>>> args.gn is: >>>> >>>> is_component_build = false >>>> >>>> is_debug = false >>>> >>>> target_cpu = "x64" >>>> >>>> use_goma = false >>>> >>>> goma_dir = "None" >>>> >>>> v8_enable_backtrace = true >>>> >>>> v8_enable_disassembler = true >>>> >>>> v8_enable_object_print = true >>>> >>>> v8_enable_verify_heap = true >>>> >>>> I have found no out.gn dir anywhere, >>>> >>>> I lost the output of the last build but will do it again and post it as >>>> soon as I have it, >>>> >>>> Also, will try the monolithic build and see if that helps, >>>> >>>> Alex. >>>> >>>> On Tue, Jun 2, 2020 at 11:02 AM 'Seth Brenith' via v8-dev < >>>> v8-dev@googlegroups.com> wrote: >>>> >>>>> As well as those static libraries, the x64.release build creates a >>>>> whole bunch of object files due to the "v8_source_set" declarations in >>>>> BUILD.gn. Any gn build target defined as depending on the "v8" target will >>>>> include not only those libs but also all of the objects from the source >>>>> sets. The easiest way to get a linkable library is to add "v8_monolithic = >>>>> true" to out/x64.release/args.gn and then build with "autoninja >>>>> v8_monolith". This will create a single lib, libv8_monolith.a, which >>>>> should >>>>> have all of the relevant stuff included. >>>>> >>>>> On Tuesday, June 2, 2020 at 4:14:08 AM UTC-7, Al Mo wrote: >>>>>> >>>>>> Hi all, >>>>>> >>>>>> I'm trying to build v8 from source in order to test/submit a cl later >>>>>> on, >>>>>> >>>>>> I followed this: https://v8.dev/docs/build >>>>>> >>>>>> It builds fine and in the end I have an 'out/x64.release' directory, >>>>>> which in turn has the 'libv8_libbase.a' and 'libv8_libplatform.a' static >>>>>> libraries. >>>>>> >>>>>> When trying to link against these libraries, I get undefined symbol >>>>>> errors, like: >>>>>> >>>>>> "v8::V8::Initialize(int)", referenced from: >>>>>> >>>>>> _main in main-df02fe.o >>>>>> >>>>>> "v8::V8::InitializePlatform(v8::Platform*)", referenced from: >>>>>> >>>>>> _main in main-df02fe.o >>>>>> >>>>>> "v8::V8::InitializeICUDefaultLocation(char const*, char const*)", >>>>>> referenced from: >>>>>> >>>>>> _main in main-df02fe.o >>>>>> >>>>>> "v8::V8::InitializeExternalStartupData(char const*)", referenced >>>>>> from: >>>>>> >>>>>> _main in main-df02fe.o >>>>>> >>>>>> Checking the libraries with 'nm -gAC lib...' shows me that the >>>>>> symbols are not there at all, >>>>>> >>>>>> I am not familiar with gn and the configuration options of v8, hence >>>>>> why I'm asking about it, >>>>>> >>>>>> Any idea what could be going on? >>>>>> >>>>>> Thanks. >>>>>> >>>>> -- >>>>> -- >>>>> v8-dev mailing list >>>>> v8-dev@googlegroups.com >>>>> http://groups.google.com/group/v8-dev >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "v8-dev" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to v8-dev+unsubscr...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/v8-dev/4111796a-c053-4f16-9bf5-a1af0b99fc14%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/v8-dev/4111796a-c053-4f16-9bf5-a1af0b99fc14%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. 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