Copy files with `cp -pPRf` on OpenBSD.

pylib/gyp/generator/make.py

 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Notes:
 #
 # This is all roughly based on the Makefile system used by the Linux
 # kernel, but is a non-recursive make -- we put the entire dependency
 # graph in front of make and let it figure it out.
 #
@@ skipping 2026 matching lines @@
   elif flavor == 'solaris':
     header_params.update({
         'flock': './gyp-flock-tool flock',
         'flock_index': 2,
     })
   elif flavor == 'freebsd':
     # Note: OpenBSD has sysutils/flock. lockf seems to be FreeBSD specific.
     header_params.update({
         'flock': 'lockf',
     })
+  elif flavor == 'openbsd':
+    copy_archive_arguments = '-pPRf'
+    header_params.update({
+        'copy_archive_args': copy_archive_arguments,
+    })
   elif flavor == 'aix':
     copy_archive_arguments = '-pPRf'
     header_params.update({
         'copy_archive_args': copy_archive_arguments,
         'link_commands': LINK_COMMANDS_AIX,
         'flock': './gyp-flock-tool flock',
         'flock_index': 2,
     })
 
   header_params.update({
@@ skipping 147 matching lines @@
     root_makefile.write("endif\n")
   root_makefile.write('\n')
 
   if (not generator_flags.get('standalone')
       and generator_flags.get('auto_regeneration', True)):
     WriteAutoRegenerationRule(params, root_makefile, makefile_name, build_files)
 
   root_makefile.write(SHARED_FOOTER)
 
   root_makefile.close()