build: enable loading internal modules from disk

PR-URL: https://github.com/nodejs/node/pull/31321
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

1 files changed, 16 insertions, 6 deletions

diff --git a/configure.py b/configure.py
index 682feb44e4..c5025c81eb 100755
--- a/configure.py
+++ b/configure.py
@@ -609,6 +609,12 @@ parser.add_option('--v8-non-optimized-debug',
     default=False,
     help='compile V8 with minimal optimizations and with runtime checks')
 
+parser.add_option('--node-builtin-modules-path',
+    action='store',
+    dest='node_builtin_modules_path',
+    default=False,
+    help='node will load builtin modules from disk instead of from binary')
+
 # Create compile_commands.json in out/Debug and out/Release.
 parser.add_option('-C',
     action='store_true',
@@ -992,18 +998,18 @@ def configure_node(o):
 
   o['variables']['want_separate_host_toolset'] = int(cross_compiling)
 
-  if not options.without_node_snapshot:
+  if options.without_node_snapshot or options.node_builtin_modules_path:
+    o['variables']['node_use_node_snapshot'] = 'false'
+  else:
     o['variables']['node_use_node_snapshot'] = b(
       not cross_compiling and not options.shared)
-  else:
-    o['variables']['node_use_node_snapshot'] = 'false'
 
-  if not options.without_node_code_cache:
+  if options.without_node_code_cache or options.node_builtin_modules_path:
+    o['variables']['node_use_node_code_cache'] = 'false'
+  else:
     # TODO(refack): fix this when implementing embedded code-cache when cross-compiling.
     o['variables']['node_use_node_code_cache'] = b(
       not cross_compiling and not options.shared)
-  else:
-    o['variables']['node_use_node_code_cache'] = 'false'
 
   if target_arch == 'arm':
     configure_arm(o)
@@ -1145,6 +1151,10 @@ def configure_node(o):
   else:
     o['variables']['node_target_type'] = 'executable'
 
+  if options.node_builtin_modules_path:
+    print('Warning! Loading builtin modules from disk is for development')
+    o['variables']['node_builtin_modules_path'] = options.node_builtin_modules_path
+
 def configure_napi(output):
   version = getnapibuildversion.get_napi_version()
   output['variables']['napi_build_version'] = version