path: root/linden/indra/develop.py

#!/usr/bin/env python
#
# @file develop.py
# @authors Bryan O'Sullivan, Mark Palange, Aaron Brashears
# @brief Fire and forget script to appropriately configure cmake for SL.
#
# $LicenseInfo:firstyear=2007&license=viewergpl$
# 
# Copyright (c) 2007-2009, Linden Research, Inc.
# 
# Second Life Viewer Source Code
# The source code in this file ("Source Code") is provided by Linden Lab
# to you under the terms of the GNU General Public License, version 2.0
# ("GPL"), unless you have obtained a separate licensing agreement
# ("Other License"), formally executed by you and Linden Lab.  Terms of
# the GPL can be found in doc/GPL-license.txt in this distribution, or
# online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
# 
# There are special exceptions to the terms and conditions of the GPL as
# it is applied to this Source Code. View the full text of the exception
# in the file doc/FLOSS-exception.txt in this software distribution, or
# online at
# http://secondlifegrid.net/programs/open_source/licensing/flossexception
# 
# By copying, modifying or distributing this software, you acknowledge
# that you have read and understood your obligations described above,
# and agree to abide by those obligations.
# 
# ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
# WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
# COMPLETENESS OR PERFORMANCE.
# $/LicenseInfo$


import errno
import getopt
import os
import random
import re
import shutil
import socket
import sys
import commands

class CommandError(Exception):
    pass


def mkdir(path):
    try:
        os.mkdir(path)
        return path
    except OSError, err:
        if err.errno != errno.EEXIST or not os.path.isdir(path):
            raise

def getcwd():
    cwd = os.getcwd()
    if 'a' <= cwd[0] <= 'z' and cwd[1] == ':':
        # CMake wants DOS drive letters to be in uppercase.  The above
        # condition never asserts on platforms whose full path names
        # always begin with a slash, so we don't need to test whether
        # we are running on Windows.
        cwd = cwd[0].upper() + cwd[1:]
    return cwd

def quote(opts):
    return '"' + '" "'.join([ opt.replace('"', '') for opt in opts ]) + '"'

class PlatformSetup(object):
    generator = None
    build_types = {}
    for t in ('Debug', 'Release', 'RelWithDebInfo'):
        build_types[t.lower()] = t

    build_type = build_types['relwithdebinfo']
    standalone = 'OFF'
    unattended = 'OFF'
    universal = 'OFF'
    project_name = 'Imprudence'
    distcc = True
    cmake_opts = []

    def __init__(self):
        self.script_dir = os.path.realpath(
            os.path.dirname(__import__(__name__).__file__))

    def os(self):
        '''Return the name of the OS.'''

        raise NotImplemented('os')

    def arch(self):
        '''Return the CPU architecture.'''

        return None

    def platform(self):
        '''Return a stringified two-tuple of the OS name and CPU
        architecture.'''

        ret = self.os()
        if self.arch():
            ret += '-' + self.arch()
        return ret 

    def build_dirs(self):
        '''Return the top-level directories in which builds occur.

        This can return more than one directory, e.g. if doing a
        32-bit viewer and server build on Linux.'''

        return ['build-' + self.platform()]

    def cmake_commandline(self, src_dir, build_dir, opts, simple):
        '''Return the command line to run cmake with.'''

        args = dict(
            dir=src_dir,
            generator=self.generator,
            opts=quote(opts),
            standalone=self.standalone,
            unattended=self.unattended,
            type=self.build_type,
            )
        #if simple:
        #    return 'cmake %(opts)s %(dir)r' % args
        return ('cmake -DCMAKE_BUILD_TYPE:STRING=%(type)s '
                '-DSTANDALONE:BOOL=%(standalone)s '
                '-DUNATTENDED:BOOL=%(unattended)s '
                '-G %(generator)r %(opts)s %(dir)r' % args)

    def run_cmake(self, args=[]):
        '''Run cmake.'''

        # do a sanity check to make sure we have a generator
        if not hasattr(self, 'generator'):
            raise "No generator available for '%s'" % (self.__name__,)
        cwd = getcwd()
        created = []
        try:
            for d in self.build_dirs():
                simple = True
                if mkdir(d):
                    created.append(d)
                    simple = False
                try:
                    os.chdir(d)
                    cmd = self.cmake_commandline(cwd, d, args, simple)
                    print 'Running %r in %r' % (cmd, d)
                    self.run(cmd, 'cmake')
                finally:
                    os.chdir(cwd)
        except:
            # If we created a directory in which to run cmake and
            # something went wrong, the directory probably just
            # contains garbage, so delete it.
            os.chdir(cwd)
            for d in created:
                print 'Cleaning %r' % d
                shutil.rmtree(d)
            raise

    def parse_build_opts(self, arguments):
        opts, targets = getopt.getopt(arguments, 'o:', ['option='])
        build_opts = []
        for o, a in opts:
            if o in ('-o', '--option'):
                build_opts.append(a)
        return build_opts, targets

    def run_build(self, opts, targets):
        '''Build the default targets for this platform.'''

        raise NotImplemented('run_build')

    def cleanup(self):
        '''Delete all build directories.'''

        cleaned = 0
        for d in self.build_dirs():
            if os.path.isdir(d):
                print 'Cleaning %r' % d
                shutil.rmtree(d)
                cleaned += 1
        if not cleaned:
            print 'Nothing to clean up!'

    def is_internal_tree(self):
        '''Indicate whether we are building in an internal source tree.'''

        return os.path.isdir(os.path.join(self.script_dir, 'newsim'))

    def find_in_path(self, name, defval=None, basename=False):
        for ext in self.exe_suffixes:
            name_ext = name + ext
            if os.sep in name_ext:
                path = os.path.abspath(name_ext)
                if os.access(path, os.X_OK):
                    return [basename and os.path.basename(path) or path]
            for p in os.getenv('PATH', self.search_path).split(os.pathsep):
                path = os.path.join(p, name_ext)
                if os.access(path, os.X_OK):
                    return [basename and os.path.basename(path) or path]
        if defval:
            return [defval]
        return []


class UnixSetup(PlatformSetup):
    '''Generic Unixy build instructions.'''

    search_path = '/usr/bin:/usr/local/bin'
    exe_suffixes = ('',)

    def __init__(self):
        super(UnixSetup, self).__init__()
        self.generator = 'Unix Makefiles'

    def os(self):
        return 'unix'

    def arch(self):
        cpu = os.uname()[-1]
        if cpu.endswith('386'):
            cpu = 'i386'
        elif cpu.endswith('86'):
            cpu = 'i686'
        elif cpu in ('x86_64'):
            cpu = 'x86_64'	    
        elif cpu in ('athlon',):
            cpu = 'i686'
        elif cpu == 'Power Macintosh':
            cpu = 'ppc'
        return cpu

    def run(self, command, name=None):
        '''Run a program.  If the program fails, raise an exception.'''
        ret = os.system(command)
        if ret:
            if name is None:
                name = command.split(None, 1)[0]
            if os.WIFEXITED(ret):
                st = os.WEXITSTATUS(ret)
                if st == 127:
                    event = 'was not found'
                else:
                    event = 'exited with status %d' % st
            elif os.WIFSIGNALED(ret):
                event = 'was killed by signal %d' % os.WTERMSIG(ret)
            else:
                event = 'died unexpectedly (!?) with 16-bit status %d' % ret
            raise CommandError('the command %r %s' %
                               (name, event))


class LinuxSetup(UnixSetup):
    def __init__(self):
        super(LinuxSetup, self).__init__()
        try:
            self.debian_sarge = open('/etc/debian_version').read().strip() == '3.1'
        except:
            self.debian_sarge = False

    def os(self):
        return 'linux'

    def build_dirs(self):
        # Only build the server code if (a) we have it and (b) we're
        # on 32-bit x86.
        platform_build = '%s-%s' % (self.platform(), self.build_type.lower())

        if self.arch() == 'i686' and self.is_internal_tree():
            return ['viewer-' + platform_build, 'server-' + platform_build]
        elif self.arch() == 'x86_64' and self.is_internal_tree():
            # the viewer does not build in 64bit -- kdu5 issues
            # we can either use openjpeg, or overhaul our viewer to handle kdu5 or higher
            # doug knows about kdu issues
            return ['server-' + platform_build]
        else:
            return ['viewer-' + platform_build]

    def cmake_commandline(self, src_dir, build_dir, opts, simple):
        args = dict(
            dir=src_dir,
            generator=self.generator,
            opts=quote(opts),
            standalone=self.standalone,
            unattended=self.unattended,
            type=self.build_type,
            project_name=self.project_name
            )
        if not self.is_internal_tree():
            args.update({'cxx':'g++', 'server':'OFF', 'viewer':'ON'})
        else:
            if self.distcc:
                distcc = self.find_in_path('distcc')
                baseonly = True
            else:
                distcc = []
                baseonly = False
            if 'server' in build_dir:
                gcc = distcc + self.find_in_path(
                    self.debian_sarge and 'g++-3.3' or 'g++-4.1',
                    'g++', baseonly)
                args.update({'cxx': ' '.join(gcc), 'server': 'ON',
                             'viewer': 'OFF'})
            else:
                gcc41 = distcc + self.find_in_path('g++-4.1', 'g++', baseonly)
                args.update({'cxx': ' '.join(gcc41),
                             'server': 'OFF',
                             'viewer': 'ON'})
        cmd = (('cmake -DCMAKE_BUILD_TYPE:STRING=%(type)s '
                '-G %(generator)r -DSERVER:BOOL=%(server)s '
                '-DVIEWER:BOOL=%(viewer)s -DSTANDALONE:BOOL=%(standalone)s '
                '-DUNATTENDED:BOOL=%(unattended)s '
                '-DROOT_PROJECT_NAME:STRING=%(project_name)s '
                '%(opts)s %(dir)r')
               % args)
        if 'CXX' not in os.environ:
            args.update({'cmd':cmd})
            cmd = ('CXX=%(cxx)r %(cmd)s' % args)
        return cmd

    def run_build(self, opts, targets):
        job_count = None

        for i in range(len(opts)):
            if opts[i].startswith('-j'):
                try:
                    job_count = int(opts[i][2:])
                except ValueError:
                    try:
                        job_count = int(opts[i+1])
                    except ValueError:
                        job_count = True

        def get_cpu_count():
            count = 0
            for line in open('/proc/cpuinfo'):
                if re.match(r'processor\s*:', line):
                    count += 1
            return count

        def localhost():
            count = get_cpu_count()
            return 'localhost/' + str(count), count

        def get_distcc_hosts():
            try:
                hosts = []
                name = os.getenv('DISTCC_DIR', '/etc/distcc') + '/hosts'
                for l in open(name):
                    l = l[l.find('#')+1:].strip()
                    if l: hosts.append(l)
                return hosts
            except IOError:
                return (os.getenv('DISTCC_HOSTS', '').split() or
                        [localhost()[0]])

        def count_distcc_hosts():
            cpus = 0
            hosts = 0
            for host in get_distcc_hosts():
                m = re.match(r'.*/(\d+)', host)
                hosts += 1
                cpus += m and int(m.group(1)) or 1
            return hosts, cpus

        def mk_distcc_hosts():
            '''Generate a list of LL-internal machines to build on.'''
            loc_entry, cpus = localhost()
            hosts = [loc_entry]
            dead = []
            stations = [s for s in xrange(36) if s not in dead]
            random.shuffle(stations)
            hosts += ['station%d.lindenlab.com/2,lzo' % s for s in stations]
            cpus += 2 * len(stations)
            return ' '.join(hosts), cpus

        if job_count is None:
            hosts, job_count = count_distcc_hosts()
            if hosts == 1 and socket.gethostname().startswith('station'):
                hosts, job_count = mk_distcc_hosts()
                os.putenv('DISTCC_HOSTS', hosts)
            opts.extend(['-j', str(job_count)])

        if targets:
            targets = ' '.join(targets)
        else:
            targets = 'all'

        for d in self.build_dirs():
            cmd = 'make -C %r %s %s' % (d, ' '.join(opts), targets)
            print 'Running %r' % cmd
            self.run(cmd)

        
class DarwinSetup(UnixSetup):
    def __init__(self):
        super(DarwinSetup, self).__init__()
        self.generator = 'Xcode'

    def os(self):
        return 'darwin'

    def arch(self):
        if self.universal == 'ON':
            return 'universal'
        else:
            return UnixSetup.arch(self)

    def cmake_commandline(self, src_dir, build_dir, opts, simple):
        args = dict(
            dir=src_dir,
            generator=self.generator,
            opts=quote(opts),
            standalone=self.standalone,
            unattended=self.unattended,
            project_name=self.project_name,
            universal=self.universal,
            type=self.build_type
            )
        if self.universal == 'ON':
            args['universal'] = '-DCMAKE_OSX_ARCHITECTURES:STRING=\'i386\''
        #if simple:
        #    return 'cmake %(opts)s %(dir)r' % args
        return ('cmake -G %(generator)r '
                '-DCMAKE_BUILD_TYPE:STRING=%(type)s '
                '-DSTANDALONE:BOOL=%(standalone)s '
                '-DUNATTENDED:BOOL=%(unattended)s '
                '-DROOT_PROJECT_NAME:STRING=%(project_name)s '
                '%(universal)s '
                '%(opts)s %(dir)r' % args)

    def run_build(self, opts, targets):
        cwd = getcwd()
        if targets:
            targets = ' '.join(['-target ' + repr(t) for t in targets])
        else:
            targets = ''
        cmd = ('xcodebuild -configuration %s %s %s' %
               (self.build_type, ' '.join(opts), targets))
        for d in self.build_dirs():
            try:
                os.chdir(d)
                print 'Running %r in %r' % (cmd, d)
                self.run(cmd)
            finally:
                os.chdir(cwd)


class WindowsSetup(PlatformSetup):
    gens = {
        'vc71' : {
            'gen' : r'Visual Studio 7 .NET 2003',
            'ver' : r'7.1'
            },
        'vc80' : {
            'gen' : r'Visual Studio 8 2005',
            'ver' : r'8.0'
            },
        'vc90' : {
            'gen' : r'Visual Studio 9 2008',
            'ver' : r'9.0'
            },
        'vc100' : {
            'gen' : r'Visual Studio 10',
            'ver' : r'10.0'
            }
        }
    gens['vs2003'] = gens['vc71']
    gens['vs2005'] = gens['vc80']
    gens['vs2008'] = gens['vc90']
    gens['vs2010'] = gens['vc100']

    search_path = r'C:\windows'
    exe_suffixes = ('.exe', '.bat', '.com')

    def __init__(self):
        super(WindowsSetup, self).__init__()
        self._generator = None
        self.incredibuild = False

    def _get_generator(self):
        if self._generator is None:
            for version in 'vc80 vc90 vc100 vc71'.split():
                if self.find_visual_studio(version):
                    self._generator = version
                    print 'Building with ', self.gens[version]['gen']
                    break
            else:
                print >> sys.stderr, 'Cannot find a Visual Studio installation, testing for express editions'
                for version in 'vc80 vc90 vc100 vc71'.split():
                    if self.find_visual_studio_express(version):
                        self._generator = version
                        print 'Building with ', self.gens[version]['gen'] , "Express edition"
                        break
                else:
                    print >> sys.stderr, 'Cannot find any Visual Studio installation'
                    eys.exit(1)
        return self._generator

    def _set_generator(self, gen):
        self._generator = gen

    generator = property(_get_generator, _set_generator)

    def os(self):
        return 'win32'

    def build_dirs(self):
        return ['build-' + self.generator]

    def cmake_commandline(self, src_dir, build_dir, opts, simple):
        args = dict(
            dir=src_dir,
            generator=self.gens[self.generator.lower()]['gen'],
            opts=quote(opts),
            standalone=self.standalone,
            unattended=self.unattended,
            project_name=self.project_name
            )
        # default to packaging disabled
        # if simple:
        #    return 'cmake %(opts)s "%(dir)s"' % args
        return ('cmake -G "%(generator)s" '
                '-DSTANDALONE:BOOL=%(standalone)s '
                '-DUNATTENDED:BOOL=%(unattended)s '
                '-DROOT_PROJECT_NAME:STRING=%(project_name)s '
                #'-DPACKAGE:BOOL=ON '
                '%(opts)s "%(dir)s"' % args)

    def find_visual_studio(self, gen=None):
        if gen is None:
            gen = self._generator
        gen = gen.lower()
        try:
            import _winreg
            key_str = (r'SOFTWARE\Microsoft\VisualStudio\%s\Setup\VS' %
                       self.gens[gen]['ver'])
            value_str = (r'EnvironmentDirectory')
            print ('Reading VS environment from HKEY_LOCAL_MACHINE\%s\%s' %
                   (key_str, value_str))
            print key_str

            reg = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
            key = _winreg.OpenKey(reg, key_str)
            value = _winreg.QueryValueEx(key, value_str)[0]
            print 'Found: %s' % value
            return value
        except WindowsError, err:
            print >> sys.stderr, "Didn't find ", self.gens[gen]['gen']
            return ''

    def find_visual_studio_express(self, gen=None):
        if gen is None:
            gen = self._generator
        gen = gen.lower()
        try:
            import _winreg
            key_str = (r'SOFTWARE\Microsoft\VCExpress\%s\Setup\VC' %
                       self.gens[gen]['ver'])
            value_str = (r'ProductDir')
            print ('Reading VS environment from HKEY_LOCAL_MACHINE\%s\%s' %
                   (key_str, value_str))
            print key_str

            reg = _winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
            key = _winreg.OpenKey(reg, key_str)
            value = _winreg.QueryValueEx(key, value_str)[0]+"IDE"
            print 'Found: %s' % value
            return value
        except WindowsError, err:
            print >> sys.stderr, "Didn't find ", self.gens[gen]['gen']
            return ''

    def get_build_cmd(self):
        if self.incredibuild:
            config = self.build_type
            if self.gens[self.generator]['ver'] in [ r'8.0', r'9.0' ]:
                config = '\"%s|Win32\"' % config

            return "buildconsole %s.sln /build %s" % (self.project_name, config)
           
        environment = self.find_visual_studio()
        if environment == '':
            environment = self.find_visual_studio_express()
            if environment == '':
                 print >> sys.stderr, "Something went very wrong during build stage, could not find a Visual Studio?"
            else:
                 print >> sys.stderr, "\nSolution generation complete, as you are using an express edition the final\n stages will need to be completed by hand"
                 build_dirs=self.build_dirs();
                 print >> sys.stderr, "Solution can now be found in:", build_dirs[0]
                 print >> sys.stderr, "Set %s as startup project" % self.project_name
                 print >> sys.stderr, "Set build target is Release or RelWithDbgInfo"
                 exit(0)   

        # devenv.com is CLI friendly, devenv.exe... not so much.
        return ('"%sdevenv.com" %s.sln /build %s' % 
               (environment, self.project_name, self.build_type))

    def run(self, command, name=None):
        '''Run a program.  If the program fails, raise an exception.'''
        ret = os.system(command)
        if ret:
            if name is None:
                name = command.split(None, 1)[0]
            path = self.find_in_path(name)
            if not path:
                ret = 'was not found'
            else:
                ret = 'exited with status %d' % ret
            raise CommandError('the command %r %s' %
                               (name, ret))

    def run_cmake(self, args=[]):
        '''Override to add the vstool.exe call after running cmake.'''
        PlatformSetup.run_cmake(self, args)
        if self.unattended == 'OFF':
            self.run_vstool()

    def run_vstool(self):
        for build_dir in self.build_dirs():
            stamp = os.path.join(build_dir, 'vstool.txt')
            try:
                prev_build = open(stamp).read().strip()
            except IOError:
                prev_build = ''
            if prev_build == self.build_type:
                # Only run vstool if the build type has changed.
                continue
            vstool_cmd = (os.path.join('tools','vstool','VSTool.exe') +
                          ' --solution ' +
                          os.path.join(build_dir,'Imprudence.sln') +
                          ' --config ' + self.build_type +
                          ' --startup imprudence-bin')
            print 'Running %r in %r' % (vstool_cmd, getcwd())
            self.run(vstool_cmd)        
            print >> open(stamp, 'w'), self.build_type
        
    def run_build(self, opts, targets):
        cwd = getcwd()
        build_cmd = self.get_build_cmd()

        for d in self.build_dirs():
            try:
                os.chdir(d)
                if targets:
                    for t in targets:
                        cmd = '%s /project %s %s' % (build_cmd, t, ' '.join(opts))
                        print 'Running %r in %r' % (cmd, d)
                        self.run(cmd)
                else:
                    cmd = '%s %s' % (build_cmd, ' '.join(opts))
                    print 'Running %r in %r' % (cmd, d)
                    self.run(cmd)
            finally:
                os.chdir(cwd)
                
class CygwinSetup(WindowsSetup):
    def __init__(self):
        super(CygwinSetup, self).__init__()
        self.generator = 'vc80'

    def cmake_commandline(self, src_dir, build_dir, opts, simple):
        dos_dir = commands.getoutput("cygpath -w %s" % src_dir)
        args = dict(
            dir=dos_dir,
            generator=self.gens[self.generator.lower()]['gen'],
            opts=quote(opts),
            standalone=self.standalone,
            unattended=self.unattended,
            project_name=self.project_name
            )
        #if simple:
        #    return 'cmake %(opts)s "%(dir)s"' % args
        return ('cmake -G "%(generator)s" '
                '-DUNATTENDED:BOOl=%(unattended)s '
                '-DSTANDALONE:BOOL=%(standalone)s '
                '-DROOT_PROJECT_NAME:STRING=%(project_name)s '
                '%(opts)s "%(dir)s"' % args)

setup_platform = {
    'darwin': DarwinSetup,
    'linux2': LinuxSetup,
    'win32' : WindowsSetup,
    'cygwin' : CygwinSetup
    }


usage_msg = '''
Usage:   develop.py [options] [command [command-options]]

Options:
  -h | --help           print this help message
       --standalone     build standalone, without Linden prebuild libraries
       --unattended     build unattended, do not invoke any tools requiring
                        a human response
       --universal      build a universal binary on Mac OS X (unsupported)
  -t | --type=NAME      build type ("Debug", "Release", or "RelWithDebInfo")
  -N | --no-distcc      disable use of distcc
  -G | --generator=NAME generator name
                        Windows: VC71 or VS2003 (default), VC80 (VS2005) or 
                          VC90 (VS2008)
                        Mac OS X: Xcode (default), Unix Makefiles
                        Linux: Unix Makefiles (default), KDevelop3
  -p | --project=NAME   set the root project name. (Doesn't effect makefiles)
                        
Commands:
  build           configure and build default target
  clean           delete all build directories, does not affect sources
  configure       configure project by running cmake (default if none given)
  printbuilddirs  print the build directory that will be used

Command-options for "configure":
  We use cmake variables to change the build configuration.
  -DSERVER:BOOL=OFF        Don't configure simulator/dataserver/etc
  -DVIEWER:BOOL=OFF        Don't configure the viewer
  -DPACKAGE:BOOL=ON        Create "package" target to make installers
  -DLOCALIZESETUP:BOOL=ON  Create one win_setup target per supported language

Examples:
  Set up a viewer-only project for your system:
    develop.py configure -DSERVER:BOOL=OFF
  
  Set up a Visual Studio 2005 project with "package" target:
    develop.py -G vc80 configure -DPACKAGE:BOOL=ON
'''

def main(arguments):
    setup = setup_platform[sys.platform]()
    try:
        opts, args = getopt.getopt(
            arguments,
            '?hNt:p:G:',
            ['help', 'standalone', 'no-distcc', 'unattended', 'type=', 'incredibuild', 'generator=', 'project='])
    except getopt.GetoptError, err:
        print >> sys.stderr, 'Error:', err
        print >> sys.stderr, """
Note: You must pass -D options to cmake after the "configure" command
For example: develop.py configure -DSERVER:BOOL=OFF"""
        print >> sys.stderr, usage_msg.strip()
        sys.exit(1)

    for o, a in opts:
        if o in ('-?', '-h', '--help'):
            print usage_msg.strip()
            sys.exit(0)
        elif o in ('--standalone',):
            setup.standalone = 'ON'
        elif o in ('--unattended',):
            setup.unattended = 'ON'
        elif o in ('-t', '--type'):
            try:
                setup.build_type = setup.build_types[a.lower()]
            except KeyError:
                print >> sys.stderr, 'Error: unknown build type', repr(a)
                print >> sys.stderr, 'Supported build types:'
                types = setup.build_types.values()
                types.sort()
                for t in types:
                    print ' ', t
                sys.exit(1)
        elif o in ('-G', '--generator'):
            setup.generator = a
        elif o in ('-N', '--no-distcc'):
            setup.distcc = False
        elif o in ('-p', '--project'):
            setup.project_name = a
        elif o in ('--incredibuild'):
            setup.incredibuild = True
        else:
            print >> sys.stderr, 'INTERNAL ERROR: unhandled option', repr(o)
            sys.exit(1)
    if not args:
        setup.run_cmake()
        return
    try:
        cmd = args.pop(0)
        if cmd in ('cmake', 'configure'):
            setup.run_cmake(args)
        elif cmd == 'build':
            for d in setup.build_dirs():
                if not os.path.exists(d):
                    raise CommandError('run "develop.py cmake" first')
            setup.run_cmake()
            opts, targets = setup.parse_build_opts(args)
            setup.run_build(opts, targets)
        elif cmd == 'clean':
            if args:
                raise CommandError('clean takes no arguments')
            setup.cleanup()
        elif cmd == 'printbuilddirs':
            for d in setup.build_dirs():
                print >> sys.stdout, d
        else:
            print >> sys.stderr, 'Error: unknown subcommand', repr(cmd)
            print >> sys.stderr, "(run 'develop.py --help' for help)"
            sys.exit(1)
    except getopt.GetoptError, err:
        print >> sys.stderr, 'Error with %r subcommand: %s' % (cmd, err)
        sys.exit(1)


if __name__ == '__main__':
    try:
        main(sys.argv[1:])
    except CommandError, err:
        print >> sys.stderr, 'Error:', err
        sys.exit(1)