From 375c7649ec8a67aaf5524df762f221168716a523 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Wed, 5 Feb 2020 15:24:14 +0100
Subject: [PATCH] build: add configure option to debug only Node.js part of the
 binary
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Building Node.js with `--debug` takes a long time and generates
binaries that can be hard to work with due to their size, in
particular because debug builds of V8 are large.

Sometimes, it’s sufficient to build the Node.js parts with native
debugging options enabled. Add an option for that.

PR-URL: https://github.com/nodejs/node/pull/31644
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Rich Trott <rtrott@gmail.com>
---
 configure.py |  6 ++++++
 node.gypi    | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/configure.py b/configure.py
index c5025c81eb8..beb08df0884 100755
--- a/configure.py
+++ b/configure.py
@@ -89,6 +89,11 @@ parser.add_option('--debug',
     dest='debug',
     help='also build debug build')
 
+parser.add_option('--debug-node',
+    action='store_true',
+    dest='debug_node',
+    help='build the Node.js part of the binary with debugging symbols')
+
 parser.add_option('--dest-cpu',
     action='store',
     dest='dest_cpu',
@@ -975,6 +980,7 @@ def configure_node(o):
   o['variables']['node_prefix'] = options.prefix
   o['variables']['node_install_npm'] = b(not options.without_npm)
   o['variables']['node_report'] = b(not options.without_report)
+  o['variables']['debug_node'] = b(options.debug_node)
   o['default_configuration'] = 'Debug' if options.debug else 'Release'
 
   host_arch = host_arch_win() if os.name == 'nt' else host_arch_cc()
diff --git a/node.gypi b/node.gypi
index a83c63e23da..87bcb37fc7f 100644
--- a/node.gypi
+++ b/node.gypi
@@ -271,6 +271,16 @@
         ],
       },
     }],
+    [ 'debug_node=="true"', {
+      'cflags!': [ '-O3' ],
+      'cflags': [ '-g', '-O0' ],
+      'defines': [ 'DEBUG' ],
+      'xcode_settings': {
+        'OTHER_CFLAGS': [
+          '-g', '-O0'
+        ],
+      },
+    }],
     [ 'coverage=="true" and node_shared=="false" and OS in "mac freebsd linux"', {
       'cflags!': [ '-O3' ],
       'ldflags': [ '--coverage',