v8dmoj

V8-based JavaScript interpreter for online judging

Prebuilt Packages

The DMOJ offers prebuilt packages for Debian-based amd64 systems, although the binaries are statically linked.

We offer this as a Debian repository. First, choose the line suited to your distro. (For non-Debian distros, select the closest Debian release):

deb [arch=amd64] https://apt.dmoj.ca/ jessie main non-free
deb [arch=amd64] https://apt.dmoj.ca/ stretch main non-free
deb [arch=amd64] https://apt.dmoj.ca/ buster main non-free

Then run:

curl https://dmoj.ca/dmoj-apt.key | sudo apt-key add -
sudo apt update
sudo apt install v8dmoj

Building on Linux

You must have git, clang, and GNU make installed.

1. git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
2. export PATH=$PATH:$(pwd)/depot_tools
3. gclient
4. fetch v8
5. cd v8
6. Find the Chrome stable v8 version on https://omahaproxy.appspot.com/.
7. git checkout <the version from step 6>.
8. gclient sync
9. tools/dev/v8gen.py x64.release
10. Run gn args out.gn/x64.release and add:

    is_component_build = false
    v8_static_library = true
    use_sysroot = false
    treat_warnings_as_errors = false
    icu_use_data_file = false
    v8_use_external_startup_data = false
    

11. ninja -C out.gn/x64.release
12. mkdir <path to v8dmoj>/v8lib
13. find out.gn/x64.release/obj/ -name '*.a' | while read -r file; do ar t "$file" | xargs ar rs "<path to v8dmoj>/v8lib/$(basename "$file")"; done
14. cp out.gn/x64.release/obj/third_party/icu/icudata/icudtl_dat.o <path to v8dmoj>/v8lib
15. ar cr <path to v8dmoj>/v8lib/libc++.a out.gn/x64.release/obj/buildtools/third_party/libc++/libc++/*
16. ar cr <path to v8dmoj>/v8lib/libc++abi.a out.gn/x64.release/obj/buildtools/third_party/libc++abi/libc++abi/
17. cp -R include <path to v8dmoj>/v8inc
18. cd <path to v8dmoj>
19. make

Building on Windows

1. Download depot tools and unpack into a directory called depot_tools.
2. Open a command prompt window and cd into the parent directory of depot_tools, and run:

   set PATH=%cd%\depot_tools;%PATH%
   set DEPOT_TOOLS_WIN_TOOLCHAIN=0
   set GYP_MSVS_OVERRIDE_PATH=C:\Program Files (x86)\Microsoft Visual Studio 14.0
   set WINDOWSSDKDIR=C:\Program Files (x86)\Windows Kits\10
   

   You may need to adapt the version of Visual Studio and the Windows SDK.
3. gclient
4. fetch v8
5. cd v8
6. Find the Chrome stable v8 version on https://omahaproxy.appspot.com/.
7. git checkout <the version from step 6>.
8. gclient sync
9. tools/dev/v8gen.py x64.release
10. Run gn args out.gn/x64.release and add:

    is_component_build = false
    v8_static_library = true
    treat_warnings_as_errors = false
    icu_use_data_file = false
    v8_use_external_startup_data = false
    

11. ninja -C out.gn/x64.release
12. mkdir [path to v8dmoj]\v8lib
13. for /R out.gn\x64.release\obj %f in (*.lib) do @copy /y %f [path to v8dmoj]\v8lib\ > nul
14. xcopy /s /y include [path to v8dmoj]\v8inc\
15. cd [path to v8dmoj]
16. nmake