Look for strip in DT_TOOLCHAIN_DIR

build/mac/strip_save_dsym

Index: build/mac/strip_save_dsym
===================================================================
--- build/mac/strip_save_dsym	(revision 227525)
+++ build/mac/strip_save_dsym	(working copy)
@@ -276,13 +276,7 @@
     # 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