Move tools/llvm/driver to pnacl/driver.

tools/llvm/driver/pnacl-ar.py

-#!/usr/bin/python
-# Copyright (c) 2011 The Native Client Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-#
-# IMPORTANT NOTE: If you make local mods to this file, you must run:
-#   %  tools/llvm/utman.sh driver
-# in order for them to take effect in the scons build.  This command
-# updates the copy in the toolchain/ tree.
-#
-
-from driver_tools import *
-
-EXTRA_ENV = {
-  'SINGLE_BC_LIBS': '0',  # 'archive' bitcode libs as single bitcode file
-}
-env.update(EXTRA_ENV)
-
-def main(argv):
-  env.set('ARGV', *argv)
-  if env.getbool('SINGLE_BC_LIBS'): return ExperimentalArHack(argv)
-  return RunWithLog('${AR} ${ARGV}', errexit = False)
-
-# The ar/ranlib hacks are an attempt to iron out problems with shared
-# libraries e.g. duplicate symbols in different libraries, before we have
-# fully functional shared libs in pnacl.
-def ExperimentalArHack(argv):
-  mode = argv[0]
-  output = argv[1]
-  inputs = argv[2:]
-  # NOTE: The checks below are a little on the paranoid side
-  #       in most cases exceptions can be tolerated.
-  #       It is probably still worth having a look at them first
-  #       so we assert on everything unusual for now.
-  if mode in ['x']:
-    # This is used by by newlib to repackage a bunch of given archives
-    # into a new archive. It assumes all the objectfiles can be found
-    # via the glob, *.o
-    assert len(inputs) == 0
-    shutil.copyfile(output, output.replace('..','').replace('/','_') + '.o')
-    return 0
-  elif mode in ['cru']:
-    # NOTE: we treat cru just like rc which just so happens to work
-    #       with newlib but does not work in the general case.
-    #       However, due to some idiosyncrasiers in newlib we need to prune
-    #       duplicates.
-    inputs = list(set(inputs))
-  elif mode not in ['rc']:
-    Log.Fatal('Unexpected "ar" mode %s', mode)
-  if not output.endswith('.a'):
-    Log.Fatal('Unexpected "ar" lib %s', output)
-  not_bitcode = [f for f in inputs if 'po' != FileType(f)]
-  # NOTE: end of paranoid checks
-  for f in not_bitcode:
-    # This is for the last remaining native lib build via scons: libcrt_platform
-    if not f.endswith('tls.o') and not f.endswith('setjmp.o'):
-      Log.Fatal('Unexpected "ar" arg %s', f)
-  if not_bitcode:
-    RunWithLog('${AR} ${ARGV}', errexit = False)
-  else:
-    RunWithEnv('${LLVM_LINK} ${inputs} -o ${output}',
-               inputs=shell.join(inputs), output=shell.escape(output))
-  return 0
-
-if __name__ == "__main__":
-  DriverMain(main)