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: #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>

.gitignore

@@ -69,6 +69,7 @@ ipch/
 
 /config.mk
 /config.gypi
+/config.status
 /config_fips.gypi
 *-nodegyp*
 /gyp-mac-tool

Makefile

@@ -114,7 +114,12 @@ out/Makefile: common.gypi deps/uv/uv.gyp deps/http_parser/http_parser.gyp \
 	$(PYTHON) tools/gyp_node.py -f make
 
 config.gypi: configure
-	$(error Missing or stale $@, please run ./$<)
+	@if [ -x config.status ]; then \
+		./config.status; \
+	else \
+		echo Missing or stale $@, please run ./$<; \
+		exit 1; \
+	fi
 
 .PHONY: install
 install: all ## Installs node into $PREFIX (default=/usr/local).

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,