build: add option to build v8 with GN

PR-URL: https://github.com/nodejs/node/pull/19201
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/configure b/configure
index e1843240ad..dbf1dfe321 100755
--- a/configure
+++ b/configure
@@ -55,6 +55,10 @@ sys.path.insert(0, 'tools')
 import getmoduleversion
 from gyp_node import run_gyp
 
+# imports in deps/v8/tools/node
+sys.path.insert(0, os.path.join('deps', 'v8', 'tools', 'node'))
+from fetch_deps import FetchDeps
+
 # parse our options
 parser = optparse.OptionParser()
 
@@ -548,6 +552,12 @@ parser.add_option('--without-bundled-v8',
     help='do not use V8 includes from the bundled deps folder. ' +
          '(This mode is not officially supported for regular applications)')
 
+parser.add_option('--build-v8-with-gn',
+    action='store_true',
+    dest='build_v8_with_gn',
+    default=False,
+    help='build V8 using GN instead of gyp')
+
 # Create compile_commands.json in out/Debug and out/Release.
 parser.add_option('-C',
     action='store_true',
@@ -1060,6 +1070,14 @@ def configure_v8(o):
     o['variables']['test_isolation_mode'] = 'noop'  # Needed by d8.gyp.
   if options.without_bundled_v8 and options.enable_d8:
     raise Exception('--enable-d8 is incompatible with --without-bundled-v8.')
+  if options.without_bundled_v8 and options.build_v8_with_gn:
+    raise Exception(
+        '--build-v8-with-gn is incompatible with --without-bundled-v8.')
+  if options.build_v8_with_gn:
+    v8_path = os.path.join('deps', 'v8')
+    print('Fetching dependencies to build V8 with GN')
+    options.build_v8_with_gn = FetchDeps(v8_path)
+  o['variables']['build_v8_with_gn'] = b(options.build_v8_with_gn)
 
 
 def configure_openssl(o):