little script to add stuff into the project.pbxproj (A file inside all *.xcodeproj package files)

Xcode.py

#!/usr/bin/env python -tt
# -*- encoding: utf-8 -*-
# Xcode.py
# @author: Bruno Gama
# @email: bgamap at gmail.com
# @license: ICS

import subprocess
import shlex
import plistlib
import tempfile
import os
import sys


def get_keys(d, search=None, ret=[]):
    for k, v in sorted(d.items(), key=lambda x: x[0]):
        if isinstance(v, dict):
            get_keys(v, search=search, ret=ret)
        else:
            if k == search:
                ret.append(v)
    return ret


def binary_plist_to_xml(pbxproj):
    raw_plutil = "plutil -convert xml1 -o - \"%s\"" % (pbxproj)
    p = subprocess.Popen(shlex.split(raw_plutil), stdout=subprocess.PIPE)
    return p.stdout.read()


def write_pbxproj(root_plist, pbxproj):
    tmp_file = tempfile.NamedTemporaryFile(mode='w+t', delete=False)
    plistlib.writePlist(root_plist, tmp_file)
    tmp_file_name = tmp_file.name
    tmp_file.close()
    pl_cmd = 'pl -input %s -output %s' % (tmp_file_name, pbxproj)
    subprocess.call(shlex.split(pl_cmd))
    if os.path.exists(tmp_file_name):
        os.remove(tmp_file_name)


def main():
    return 0

if __name__ == '__main__':
    sys.exit(main())

usage exemple

    other_ldflags = sorted(LDFLAGS)
    pl = plistlib.readPlistFromString(binary_plist_to_xml(pbxproj))
    conf = get_keys(pl, search="OTHER_LDFLAGS")

    # set linker flags
    for pl_flag in conf:
        if isinstance(pl_flag, list):
            pl_flag.extend(other_ldflags)

    write_pbxproj(pl, pbxproj)

sorry for the typos/misspelling