A port of the V8 JavaScript engine to the CMake build system.

motivation

V8 natively uses GN to build itself, which is part of the Chromium ecosystem but pretty much not used outside of it.

CMake is a widely used build system for C and C++ projects. This port will hopefully make it easier to integrate V8 with third-party projects.

Caveat emptor: v8-cmake is very much a work in progress. Bug reports and pull requests welcome!

build

To build the library and the d8 shell:

$ mkdir build && cd build

$ cmake /path/to/v8-cmake

$ make -j8

If CMake complains about python being incompatible or too old:

$ cmake -DPYTHON_EXECUTABLE=/usr/bin/python3 /path/to/v8-cmake

maintainers

To update V8 to a new patch release:

$ python update_v8.py
# <snip>
4dc61d3cd0 (tag: 8.5.210.20, refs/branch-heads/8.5) Version 8.5.210.20

$ git add .

$ git commit -am 8.5.210.20

$ git tag 8.5.210.20

To update V8 to a new minor or major release, open update_v8.json in an editor and update the "branch" field, then run update_v8.py.

The diff for update_v8.json should look like this:

diff --git a/update_v8.json b/update_v8.json
index 9d4a79ba..eb1f89f0 100644
--- a/update_v8.json
+++ b/update_v8.json
@@ -3,7 +3,7 @@
     "url": "https://chromium.googlesource.com/v8/v8.git",
     "commit": "4dc61d3cd02f0a2462cc655095db1e99ad9047d2",
     "/* comment */": "Dependency v8 must be first.",
-    "branch": "branch-heads/8.5",
+    "branch": "branch-heads/8.6",
     "path": "v8"
   },
   {