Look for strip in DT_TOOLCHAIN_DIR

build/mac/strip_save_dsym

 #!/usr/bin/python
 
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Usage: strip_save_dsym <whatever-arguments-you-would-pass-to-strip>
 #
 # strip_save_dsym is a wrapper around the standard strip utility.  Given an
 # input Mach-O file, strip_save_dsym will save a copy of the file in a "fake"
@@ skipping 258 matching lines @@
       raise
 
   if dsym_stat is None or dsym_stat.st_mtime < macho_stat.st_mtime:
     # Make a .dSYM bundle
     if not make_fake_dsym(macho, dsym):
       return False
 
     # Strip the Mach-O file
     remove_dsym = True
     try:
-      strip_path = ""
-      if "SYSTEM_DEVELOPER_BIN_DIR" in os.environ:
-        strip_path = os.environ["SYSTEM_DEVELOPER_BIN_DIR"]
-      else:
-        strip_path = "/usr/bin"
-      strip_path = os.path.join(strip_path, "strip")
-      strip_cmdline = [strip_path] + sys.argv[1:]
+      strip_cmdline = ['xcrun', 'strip'] + sys.argv[1:]
       strip_cmd = subprocess.Popen(strip_cmdline)
       if strip_cmd.wait() == 0:
         remove_dsym = False
     finally:
       if remove_dsym:
         shutil.rmtree(dsym)
 
     # Update modification time on the Mach-O file and .dSYM bundle
     now = time.time()
     os.utime(macho, (now, now))
@@ skipping 36 matching lines @@
     print >> sys.stderr, "Nothing to strip"
     return 1
 
   if not strip_and_make_fake_dsym(macho):
     return 1
 
   return 0
 
 if __name__ == "__main__":
   sys.exit(main(sys.argv))