#!/usr/bin/env python

'''
emcc - linker helper script
===========================

This script acts as a frontend replacement for the ld linker. See emcc.
'''

ALLOWED_LINK_ARGS = ['-f', '-help', '-o', '-print-after', '-print-after-all', '-print-before',
                     '-print-before-all', '-time-passes', '-v', '-verify-dom-info', '-version' ]
TWO_PART_DISALLOWED_LINK_ARGS = ['-L'] # Ignore thingsl like |-L .|

#

# We could use the compiler code for this, but here we want to be careful to use all the linker flags we have been passed, sending them to ld
call = shared.LLVM_LD
newargs = ['-disable-opt']
i = 0
while i < len(sys.argv)-1:
  i += 1
  arg = sys.argv[i]
  if arg.startswith('-'):
    prefix = arg.split('=')[0]
    if prefix in ALLOWED_LINK_ARGS:
      newargs.append(arg)
    if arg in TWO_PART_DISALLOWED_LINK_ARGS:
      i += 1
  elif arg.endswith('.so'):
    continue # .so's do not exist yet, in many cases
  else:
    # not option, so just append
    newargs.append(arg)
if target:
  actual_target = target
  if target.endswith('.js'):
    actual_target = unsuffixed(target) + '.bc'
  newargs.append('-o=' + actual_target)

if DEBUG: print >> sys.stderr, "Running:", call, ' '.join(newargs)
Popen([call] + newargs).communicate()