1 files changed, 82 insertions, 0 deletions
diff --git a/deps/v8/tools/node/build_gn.py b/deps/v8/tools/node/build_gn.py
new file mode 100755
index 0000000000..8ab2a635ea
--- /dev/null
+++ b/deps/v8/tools/node/build_gn.py
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+# Copyright 2017 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Use this script to build libv8_monolith.a as dependency for Node.js
+Required dependencies can be fetched with fetch_deps.py.
+
+Usage: build_gn.py <Debug/Release> <v8-path> <build-path> [<build-flags>]...
+
+Build flags are passed either as "strings" or numeric value. True/false
+are represented as 1/0. E.g.
+
+  v8_promise_internal_field_count=2
+  target_cpu="x64"
+  v8_enable_disassembler=0
+"""
+
+import os
+import subprocess
+import sys
+
+import node_common
+
+GN_ARGS = [
+  "v8_monolithic = true",
+  "is_component_build = false",
+  "v8_use_external_startup_data = false",
+  "use_custom_libcxx = false",
+  "use_sysroot = false",
+]
+
+BUILD_SUBDIR = "gn"
+
+# TODO: make this cross-platform.
+GN_SUBDIR = ["buildtools", "linux64", "gn"]
+
+def Build(v8_path, build_path, depot_tools, is_debug, build_flags):
+  print "Setting GN args."
+  lines = []
+  lines.extend(GN_ARGS)
+  for flag in build_flags:
+    flag = flag.replace("=1", "=true")
+    flag = flag.replace("=0", "=false")
+    flag = flag.replace("target_cpu=ia32", "target_cpu=\"x86\"")
+    lines.append(flag)
+  lines.append("is_debug = %s" % ("true" if is_debug else "false"))
+  with open(os.path.join(build_path, "args.gn"), "w") as args_file:
+    args_file.write("\n".join(lines))
+  gn = os.path.join(v8_path, *GN_SUBDIR)
+  subprocess.check_call([gn, "gen", "-C", build_path], cwd=v8_path)
+  ninja = os.path.join(depot_tools, "ninja")
+  print "Building."
+  subprocess.check_call([ninja, "-v", "-C", build_path, "v8_monolith"],
+                        cwd=v8_path)
+
+def Main(v8_path, build_path, is_debug, build_flags):
+  # Verify paths.
+  v8_path = os.path.abspath(v8_path)
+  assert os.path.isdir(v8_path)
+  build_path = os.path.abspath(build_path)
+  build_path = os.path.join(build_path, BUILD_SUBDIR)
+  if not os.path.isdir(build_path):
+    os.makedirs(build_path)
+
+  # Check that we have depot tools.
+  depot_tools = node_common.EnsureDepotTools(v8_path, False)
+
+  # Build with GN.
+  Build(v8_path, build_path, depot_tools, is_debug, build_flags)
+
+if __name__ == "__main__":
+  # TODO: use argparse to parse arguments.
+  build_mode = sys.argv[1]
+  v8_path = sys.argv[2]
+  build_path = sys.argv[3]
+  assert build_mode == "Debug" or build_mode == "Release"
+  is_debug = build_mode == "Debug"
+  # TODO: introduce "--" flag for pass-through flags.
+  build_flags = sys.argv[4:]
+  Main(v8_path, build_path, is_debug, build_flags)