mac ninja: Support LD_RUNPATH_SEARCH_PATHS.

pylib/gyp/xcode_emulation.py

 # Copyright (c) 2012 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.
 
 """
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import gyp.common
@@ skipping 518 matching lines @@
       archs = ['i386']
     ldflags.append('-arch ' + archs[0])
 
     # Xcode adds the product directory by default.
     ldflags.append('-L' + product_dir)
 
     install_name = self.GetInstallName()
     if install_name:
       ldflags.append('-install_name ' + install_name.replace(' ', r'\ '))
 
+    for rpath in self._Settings().get('LD_RUNPATH_SEARCH_PATHS', []):
+      ldflags.append('-Wl,-rpath,' + rpath)
+
     self.configname = None
     return ldflags
 
   def GetPerTargetSettings(self):
     """Gets a list of all the per-target settings. This will only fetch keys
     whose values are the same across all configurations."""
     first_pass = True
     result = {}
     for configname in sorted(self.xcode_settings.keys()):
       if first_pass:
@@ skipping 489 matching lines @@
 def GetSpecPostbuildCommands(spec, quiet=False):
   """Returns the list of postbuilds explicitly defined on |spec|, in a form
   executable by a shell."""
   postbuilds = []
   for postbuild in spec.get('postbuilds', []):
     if not quiet:
       postbuilds.append('echo POSTBUILD\\(%s\\) %s' % (
             spec['target_name'], postbuild['postbuild_name']))
     postbuilds.append(gyp.common.EncodePOSIXShellList(postbuild['action']))
   return postbuilds