Switching NaCl IRT to be built inside the chrome build.

chrome/build_nacl_irt.py

 #!/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.
 
 import optparse
 import os
 import re
 import shutil
 import subprocess
@@ skipping 42 matching lines @@
     # Invoke scons to get dependency tree.
     cmd = [
         sys.executable, 'scons.py', '-n', '--tree=all',
         '--mode=nacl', 'platform=' + platform,
         'scons-out/nacl_irt-' + platform + '/staging/irt.nexe',
     ]
     p = subprocess.Popen(cmd, cwd=NACL_DIR,
                          stdout=subprocess.PIPE,
                          stderr=subprocess.PIPE)
     (p_stdout, p_stderr) = p.communicate()
+    # If things fail on windows, try running --help, if that fails,

[noelallen_use_chromium, 2011/08/24 00:21:38]

How about returning a specific error code from scons, since this code already
assumes that if scons can't find it, it must not be a builder.
(TODO is OK)

+    # emit this script as an input (to satiate gyp), and assume we're being
+    # run on a test only bot.
+    if p.returncode != 0 and sys.platform == 'win32':
+      cmd = [sys.executable, 'scons.py', '--help']
+      p = subprocess.Popen(cmd, cwd=NACL_DIR,
+                           stdout=subprocess.PIPE,
+                           stderr=subprocess.PIPE)
+      (p_stdout, p_stderr) = p.communicate()
+      if p.returncode !=0:
+        # If scons can't even run, emit just this script as an input.
+        # See comment above this one.
+        print RelativePath(__file__, SCRIPT_DIR)
+        return
     if p.returncode != 0:
       sys.exit(2)
     # Extract unique inputs.
     for line in p_stdout.splitlines():
       m = re.match('^[ -+|]*\+\-(.+)', line)
       if not m:
         continue
       filename = m.group(1)
       if '[' in filename:
         continue
@@ skipping 104 matching lines @@
     sys.exit(1)
 
   if options.inputs:
     PrintInputs(options.platforms)
   else:
     BuildIRT(options.platforms, options.outdir)
 
 
 if __name__ == '__main__':
   Main(sys.argv)