Switching IRT to be built inside the chrome build.

chrome/build_nacl_irt.py

Index: chrome/build_nacl_irt.py
===================================================================
--- chrome/build_nacl_irt.py	(revision 0)
+++ chrome/build_nacl_irt.py	(revision 0)
@@ -0,0 +1,144 @@
+#!/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
+import sys
+
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+SRC_DIR = os.path.dirname(SCRIPT_DIR)
+NACL_DIR = os.path.join(SRC_DIR, 'native_client')
+
+
+def RelativePath(path, base):
+  """Find the relative path.
+
+  Arguments:
+    path: path we want a relative path to.
+    base: path we want a relative path from.
+  Returns:
+    The relative path from base to path.
+  """
+  path = os.path.abspath(path)
+  base = os.path.abspath(base)
+  path_parts = path.split(os.sep)
+  base_parts = base.split(os.sep)
+  while path_parts and base_parts and path_parts[0] == base_parts[0]:
+    path_parts = path_parts[1:]
+    base_parts = base_parts[1:]
+  rel_parts = ['..'] * len(base_parts) + path_parts
+  return os.sep.join(rel_parts)
+
+
+def PrintInputs(platforms):
+  """Print all the transitive inputs required to build the IRT.
+
+  Arguments:
+    platforms: list of platform names to build for.
+  """
+  if sys.platform in ['win32', 'cygwin']:
+    scons = 'scons.bat'
+  else:
+    scons = './scons'
+
+  inputs = set()
+  for platform in platforms:
+    # Invoke scons to get dependency tree.
+    cmd = [
+        scons, '-n', '--tree=prune',
+        '--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 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
+      if filename.startswith('scons-out'):
+        continue
+      if filename.endswith('.nexe'):
+        continue
+      inputs.add(filename)
+  # Print everything.
+  inputs = sorted(list(inputs))
+  for f in inputs:
+    print RelativePath(f, SCRIPT_DIR)
+
+
+def BuildIRT(platforms, out_dir):
+  """Build the IRT for several platforms.
+
+  Arguments:
+    platforms: list of platform names to build for.
+    out_dir: directory to output the IRT to.
+  """
+  # Clean.
+  scons_out = os.path.join(NACL_DIR, 'scons-out')
+  if os.path.exists(scons_out):
+    shutil.rmtree(scons_out)
+  # Build for each platform.
+  for platform in platforms:
+    cmd = [
+        scons, '--verbose', '-j8',
+        '--mode=nacl', 'platform=' + platform,
+        'scons-out/nacl_irt-' + platform + '/staging/irt.nexe',
+    ]
+    p = subprocess.Popen(cmd, cwd=NACL_DIR)
+    p.wait()
+    if p.returncode != 0:
+      sys.exit(3)
+  # Copy out each platform after stripping.
+  for platform in platforms:
+    nexe = os.path.join(out_dir, 'nacl_irt_' + platform.replace('-', '_') +
+                        '.nexe')
+    cmd = [
+      '../native_client/toolchain/linux_x86_newlib/bin/x86_64-nacl-strip',
+      ' --strip-debug',
+      '../native_client/scons-out/nacl_irt-' + platform + '/staging/irt.nexe',
+      '-o', nexe
+    ]
+    p = subprocess.Popen(cmd, cwd=SCRIPT_DIR)
+    p.wait()
+    if p.returncode != 0:
+      sys.exit(4)
+
+
+def Main(argv):
+  parser = optparse.OptionParser()
+  parser.add_option('--inputs', dest='inputs', default=False,
+                    action='store_true',
+                    help='only emit the transitive inputs to the irt build')
+  parser.add_option('--platform', dest='platforms', action='append',
+                    default=[],
+                    help='add a platform to build for (x86-32|x86-64)')
+  parser.add_option('--outdir', dest='outdir',
+                    help='directory to out irt to')
+  (options, args) = parser.parse_args(argv[1:])
+  if args or not options.platforms or (
+      not options.inputs and not options.outdir):
+    parser.print_help()
+    sys.exit(1)
+
+  if options.inputs:
+    PrintInputs(options.platforms)
+  else:
+    BuildIRT(options.platforms, options.outdir)
+
+
+if __name__ == '__main__':
+  Main(sys.argv)