build: remove requirement to re-run ./configure

Instead of requiring `./configure` to be run again after
the file changed, first try to re-run the configure script
with the arguments with which it was originally run.

Usually, those arguments will either contain no flags,
or all flags that were passed are still supported.

PR-URL: https://github.com/nodejs/node/pull/21371
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/configure b/configure
index efb92701e2..3a9ab42414 100755
--- a/configure
+++ b/configure
@@ -28,6 +28,7 @@ if sys.version_info[0] != 2 or sys.version_info[1] not in (6, 7):
 import errno
 import optparse
 import os
+import pipes
 import pprint
 import re
 import shlex
@@ -38,6 +39,8 @@ import string
 # If not run from node/, cd to node/.
 os.chdir(os.path.dirname(__file__) or '.')
 
+original_argv = sys.argv[1:]
+
 # gcc and g++ as defaults matches what GYP's Makefile generator does,
 # except on OS X.
 CC = os.environ.get('CC', 'cc' if sys.platform == 'darwin' else 'gcc')
@@ -1530,6 +1533,10 @@ pprint.pprint(output, indent=2)
 write('config.gypi', do_not_edit +
       pprint.pformat(output, indent=2) + '\n')
 
+write('config.status', '#!/bin/sh\nset -x\nexec ./configure ' +
+      ' '.join([pipes.quote(arg) for arg in original_argv]) + '\n')
+os.chmod('config.status', 0775)
+
 config = {
   'BUILDTYPE': 'Debug' if options.debug else 'Release',
   'PYTHON': sys.executable,