summaryrefslogtreecommitdiff
path: root/buildtools/wafsamba/wafsamba.py
blob: 9be10bfdbb2f2d5b7d44e1cea8990315ce4c85a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
# a waf tool to add autoconf-like macros to the configure section
# and for SAMBA_ macros for building libraries, binaries etc

import Build, os, Options, Task, Utils, cc, TaskGen, fnmatch, re, shutil, Logs
from Configure import conf
from Logs import debug
from samba_utils import SUBST_VARS_RECURSIVE

# bring in the other samba modules
from samba_optimisation import *
from samba_utils import *
from samba_autoconf import *
from samba_patterns import *
from samba_pidl import *
from samba_errtable import *
from samba_asn1 import *
from samba_autoproto import *
from samba_python import *
from samba_deps import *
from samba_bundled import *
import samba_conftests

LIB_PATH="shared"

os.putenv('PYTHONUNBUFFERED', '1')

@conf
def SAMBA_BUILD_ENV(conf):
    '''create the samba build environment'''
    conf.env['BUILD_DIRECTORY'] = conf.blddir
    mkdir_p(os.path.join(conf.blddir, LIB_PATH))
    mkdir_p(os.path.join(conf.blddir, 'python/samba/dcerpc'))
    # this allows all of the bin/shared and bin/python targets
    # to be expressed in terms of build directory paths
    for p in ['python','shared']:
        link_target = os.path.join(conf.blddir, 'default/' + p)
        if not os.path.lexists(link_target):
            os.symlink('../' + p, link_target)

    # get perl to put the blib files in the build directory
    blib_bld = os.path.join(conf.blddir, 'default/pidl/blib')
    blib_src = os.path.join(conf.srcdir, 'pidl/blib')
    mkdir_p(blib_bld + '/man1')
    mkdir_p(blib_bld + '/man3')
    if os.path.islink(blib_src):
        os.unlink(blib_src)
    elif os.path.exists(blib_src):
        shutil.rmtree(blib_src)
    os.symlink(blib_bld, blib_src)



def ADD_INIT_FUNCTION(bld, subsystem, target, init_function):
    '''add an init_function to the list for a subsystem'''
    if init_function is None:
        return
    bld.ASSERT(subsystem is not None, "You must specify a subsystem for init_function '%s'" % init_function)
    cache = LOCAL_CACHE(bld, 'INIT_FUNCTIONS')
    if not subsystem in cache:
        cache[subsystem] = []
    cache[subsystem].append( { 'TARGET':target, 'INIT_FUNCTION':init_function } )
Build.BuildContext.ADD_INIT_FUNCTION = ADD_INIT_FUNCTION



#################################################################
def SAMBA_LIBRARY(bld, libname, source,
                  deps='',
                  public_deps='',
                  includes='',
                  public_headers=None,
                  header_path=None,
                  pc_files=None,
                  vnum=None,
                  cflags='',
                  external_library=False,
                  realname=None,
                  autoproto=None,
                  group='main',
                  depends_on='',
                  local_include=True,
                  vars=None,
                  install_path=None,
                  install=True,
                  needs_python=False,
                  target_type='LIBRARY',
                  bundled_extension=True,
                  link_name=None,
                  enabled=True):
    '''define a Samba library'''

    if not enabled:
        SET_TARGET_TYPE(bld, libname, 'DISABLED')
        return

    source = bld.EXPAND_VARIABLES(source, vars=vars)

    # remember empty libraries, so we can strip the dependencies
    if (source == '') or (source == []):
        SET_TARGET_TYPE(bld, libname, 'EMPTY')
        return

    if BUILTIN_LIBRARY(bld, libname):
        obj_target = libname
    else:
        obj_target = libname + '.objlist'

    # first create a target for building the object files for this library
    # by separating in this way, we avoid recompiling the C files
    # separately for the install library and the build library
    bld.SAMBA_SUBSYSTEM(obj_target,
                        source         = source,
                        deps           = deps,
                        public_deps    = public_deps,
                        includes       = includes,
                        public_headers = public_headers,
                        header_path    = header_path,
                        cflags         = cflags,
                        group          = group,
                        autoproto      = autoproto,
                        depends_on     = depends_on,
                        needs_python   = needs_python,
                        local_include  = local_include)

    if BUILTIN_LIBRARY(bld, libname):
        return

    if not SET_TARGET_TYPE(bld, libname, target_type):
        return

    # the library itself will depend on that object target
    deps += ' ' + public_deps
    deps = TO_LIST(deps)
    deps.append(obj_target)

    if needs_python:
        bundled_name = libname
    else:
        bundled_name = BUNDLED_NAME(bld, libname, bundled_extension)

    features = 'cc cshlib'
    if needs_python:
        features += ' pyext'

    bld.SET_BUILD_GROUP(group)
    t = bld(
        features        = features + ' symlink_lib',
        source          = [],
        target          = bundled_name,
        samba_cflags    = CURRENT_CFLAGS(bld, libname, cflags),
        depends_on      = depends_on,
        samba_deps      = deps,
        samba_includes  = includes,
        local_include   = local_include,
        vnum            = vnum,
        install_path    = None,
        ldflags         = build_rpath(bld),
        name	        = libname
        )

    if link_name:
        t.link_name = link_name

    if install_path is None:
        install_path = '${LIBDIR}'
    install_path = SUBST_VARS_RECURSIVE(install_path, bld.env)

    # we don't need the double libraries if rpath is off
    if (bld.env.RPATH_ON_INSTALL == False and
        bld.env.RPATH_ON_BUILD == False):
        install_target = bundled_name
    else:
        install_target = bundled_name + '.inst'

    if install and install_target != bundled_name:
        # create a separate install library, which may have
        # different rpath settings
        SET_TARGET_TYPE(bld, install_target, target_type)
        t = bld(
            features        = features,
            source          = [],
            target          = install_target,
            samba_cflags    = CURRENT_CFLAGS(bld, libname, cflags),
            depends_on      = depends_on,
            samba_deps      = deps,
            samba_includes  = includes,
            local_include   = local_include,
            vnum            = vnum,
            install_as	    = bundled_name,
            install_path    = None,
            ldflags         = install_rpath(bld)
            )

    if install:
        if realname:
            install_name = realname
            install_link = None
            inst_name    = libname + '.inst.so'
        elif vnum:
            vnum_base = vnum.split('.')[0]
            install_name = 'lib%s.so.%s' % (bundled_name, vnum)
            install_link = 'lib%s.so.%s' % (bundled_name, vnum_base)
            inst_name    = 'lib%s.inst.so' % bundled_name
        else:
            install_name = 'lib%s.so' % bundled_name
            install_link = None
            inst_name    = 'lib%s.inst.so' % bundled_name

        bld.install_as(os.path.join(install_path, install_name), inst_name)
        if install_link:
            bld.symlink_as(os.path.join(install_path, install_link), install_name)

    if autoproto is not None:
        bld.SAMBA_AUTOPROTO(autoproto, source)

    if public_headers is not None:
        bld.PUBLIC_HEADERS(public_headers, header_path=header_path)

    if pc_files is not None:
        bld.PKG_CONFIG_FILES(pc_files, vnum=vnum)

Build.BuildContext.SAMBA_LIBRARY = SAMBA_LIBRARY


#################################################################
def SAMBA_BINARY(bld, binname, source,
                 deps='',
                 includes='',
                 public_headers=None,
                 header_path=None,
                 modules=None,
                 installdir=None,
                 ldflags=None,
                 cflags='',
                 autoproto=None,
                 use_hostcc=None,
                 compiler=None,
                 group='binaries',
                 manpages=None,
                 local_include=True,
                 subsystem_name=None,
                 needs_python=False,
                 vars=None,
                 install=True,
                 install_path=None):
    '''define a Samba binary'''

    if not SET_TARGET_TYPE(bld, binname, 'BINARY'):
        return

    features = 'cc cprogram'
    if needs_python:
        features += ' pyembed'

    bld.SET_BUILD_GROUP(group)

    obj_target = binname + '.objlist'

    source = bld.EXPAND_VARIABLES(source, vars=vars)

    # first create a target for building the object files for this binary
    # by separating in this way, we avoid recompiling the C files
    # separately for the install binary and the build binary
    bld.SAMBA_SUBSYSTEM(obj_target,
                        source         = source,
                        deps           = deps,
                        includes       = includes,
                        cflags         = cflags,
                        group          = group,
                        autoproto      = autoproto,
                        subsystem_name = subsystem_name,
                        needs_python   = needs_python,
                        local_include  = local_include)

    # the library itself will depend on that object target
    deps = TO_LIST(deps)
    deps.append(obj_target)

    bld(
        features       = features + ' symlink_bin',
        source         = [],
        target         = binname,
        samba_cflags   = CURRENT_CFLAGS(bld, binname, cflags),
        samba_deps     = deps,
        samba_includes = includes,
        local_include  = local_include,
        samba_modules  = modules,
        top            = True,
        samba_subsystem= subsystem_name,
        install_path   = None,
        ldflags        = build_rpath(bld)
        )

    if install_path is None:
        install_path = '${BINDIR}'
    install_path = SUBST_VARS_RECURSIVE(install_path, bld.env)

    # we don't need the double binaries if rpath is off
    if (bld.env.RPATH_ON_INSTALL == False and
        bld.env.RPATH_ON_BUILD == False):
        install_target = binname
    else:
        install_target = binname + '.inst'

    if install and install_target != binname:
        # we create a separate 'install' binary, which
        # will have different rpath settings
        SET_TARGET_TYPE(bld, install_target, 'BINARY')
        t = bld(
            features       = features,
            source         = [],
            target         = install_target,
            samba_cflags   = CURRENT_CFLAGS(bld, binname, cflags),
            samba_deps     = deps,
            samba_includes = includes,
            local_include  = local_include,
            samba_modules  = modules,
            top            = True,
            samba_subsystem= subsystem_name,
            install_path   = None,
            ldflags        = install_rpath(bld)
            )

    if install:
        bld.install_as(os.path.join(install_path, binname),
                       install_target,
                       chmod=0755)

    # setup the subsystem_name as an alias for the real
    # binary name, so it can be found when expanding
    # subsystem dependencies
    if subsystem_name is not None:
        bld.TARGET_ALIAS(subsystem_name, binname)

    if autoproto is not None:
        bld.SAMBA_AUTOPROTO(autoproto, source)
    if public_headers is not None:
        bld.PUBLIC_HEADERS(public_headers, header_path=header_path)
Build.BuildContext.SAMBA_BINARY = SAMBA_BINARY


#################################################################
def SAMBA_MODULE(bld, modname, source,
                 deps='',
                 includes='',
                 subsystem=None,
                 init_function=None,
                 autoproto=None,
                 autoproto_extra_source='',
                 aliases=None,
                 cflags='',
                 internal_module=True,
                 local_include=True,
                 vars=None,
                 enabled=True):
    '''define a Samba module.'''

    # we add the init function regardless of whether the module
    # is enabled or not, as we need to generate a null list if
    # all disabled
    bld.ADD_INIT_FUNCTION(subsystem, modname, init_function)

    if internal_module or BUILTIN_LIBRARY(bld, modname):
        # treat internal modules as subsystems for now
        SAMBA_SUBSYSTEM(bld, modname, source,
                        deps=deps,
                        includes=includes,
                        autoproto=autoproto,
                        autoproto_extra_source=autoproto_extra_source,
                        cflags=cflags,
                        local_include=local_include,
                        enabled=enabled)
        return

    if not enabled:
        SET_TARGET_TYPE(bld, modname, 'DISABLED')
        return

    source = bld.EXPAND_VARIABLES(source, vars=vars)

    # remember empty modules, so we can strip the dependencies
    if (source == '') or (source == []):
        SET_TARGET_TYPE(bld, modname, 'EMPTY')
        return

    if not SET_TARGET_TYPE(bld, modname, 'MODULE'):
        return

    if subsystem is not None:
        deps += ' ' + subsystem

    bld.SET_BUILD_GROUP('main')
    bld(
        features       = 'cc',
        source         = source,
        target         = modname,
        samba_cflags   = CURRENT_CFLAGS(bld, modname, cflags),
        samba_includes = includes,
        local_include  = local_include,
        samba_deps     = TO_LIST(deps)
        )

    if autoproto is not None:
        bld.SAMBA_AUTOPROTO(autoproto, source + ' ' + autoproto_extra_source)

Build.BuildContext.SAMBA_MODULE = SAMBA_MODULE


#################################################################
def SAMBA_SUBSYSTEM(bld, modname, source,
                    deps='',
                    public_deps='',
                    includes='',
                    public_headers=None,
                    header_path=None,
                    cflags='',
                    cflags_end=None,
                    group='main',
                    init_function_sentinal=None,
                    heimdal_autoproto=None,
                    heimdal_autoproto_options=None,
                    heimdal_autoproto_private=None,
                    autoproto=None,
                    autoproto_extra_source='',
                    depends_on='',
                    local_include=True,
                    local_include_first=True,
                    subsystem_name=None,
                    enabled=True,
                    vars=None,
                    needs_python=False):
    '''define a Samba subsystem'''

    if not enabled:
        SET_TARGET_TYPE(bld, modname, 'DISABLED')
        return

    # remember empty subsystems, so we can strip the dependencies
    if (source == '') or (source == []):
        SET_TARGET_TYPE(bld, modname, 'EMPTY')
        return

    if not SET_TARGET_TYPE(bld, modname, 'SUBSYSTEM'):
        return

    source = bld.EXPAND_VARIABLES(source, vars=vars)

    deps += ' ' + public_deps

    bld.SET_BUILD_GROUP(group)

    features = 'cc'
    if needs_python:
        features += ' pyext'

    t = bld(
        features       = features,
        source         = source,
        target         = modname,
        samba_cflags   = CURRENT_CFLAGS(bld, modname, cflags),
        depends_on     = depends_on,
        samba_deps     = TO_LIST(deps),
        samba_includes = includes,
        local_include  = local_include,
        local_include_first  = local_include_first,
        samba_subsystem= subsystem_name
        )

    if cflags_end is not None:
        t.samba_cflags.extend(TO_LIST(cflags_end))

    if heimdal_autoproto is not None:
        bld.HEIMDAL_AUTOPROTO(heimdal_autoproto, source, options=heimdal_autoproto_options)
    if heimdal_autoproto_private is not None:
        bld.HEIMDAL_AUTOPROTO_PRIVATE(heimdal_autoproto_private, source)
    if autoproto is not None:
        bld.SAMBA_AUTOPROTO(autoproto, source + ' ' + autoproto_extra_source)
    if public_headers is not None:
        bld.PUBLIC_HEADERS(public_headers, header_path=header_path)
    return t


Build.BuildContext.SAMBA_SUBSYSTEM = SAMBA_SUBSYSTEM


def SAMBA_GENERATOR(bld, name, rule, source, target,
                    group='build_source', enabled=True,
                    public_headers=None,
                    header_path=None,
                    vars=None):
    '''A generic source generator target'''

    if not SET_TARGET_TYPE(bld, name, 'GENERATOR'):
        return

    if not enabled:
        return

    bld.SET_BUILD_GROUP(group)
    t = bld(
        rule=rule,
        source=bld.EXPAND_VARIABLES(source, vars=vars),
        target=target,
        shell=isinstance(rule, str),
        on_results=True,
        before='cc',
        ext_out='.c',
        name=name)

    if public_headers is not None:
        bld.PUBLIC_HEADERS(public_headers, header_path=header_path)
    return t
Build.BuildContext.SAMBA_GENERATOR = SAMBA_GENERATOR



def BUILD_SUBDIR(bld, dir):
    '''add a new set of build rules from a subdirectory'''
    path = os.path.normpath(bld.curdir + '/' + dir)
    cache = LOCAL_CACHE(bld, 'SUBDIR_LIST')
    if path in cache: return
    cache[path] = True
    debug("build: Processing subdirectory %s" % dir)
    bld.add_subdirs(dir)
Build.BuildContext.BUILD_SUBDIR = BUILD_SUBDIR



@runonce
def SETUP_BUILD_GROUPS(bld):
    '''setup build groups used to ensure that the different build
    phases happen consecutively'''
    bld.p_ln = bld.srcnode # we do want to see all targets!
    bld.env['USING_BUILD_GROUPS'] = True
    bld.add_group('setup')
    bld.add_group('build_compiler_source')
    bld.add_group('base_libraries')
    bld.add_group('build_compilers')
    bld.add_group('build_source')
    bld.add_group('prototypes')
    bld.add_group('main')
    bld.add_group('binaries')
    bld.add_group('final')
Build.BuildContext.SETUP_BUILD_GROUPS = SETUP_BUILD_GROUPS


def SET_BUILD_GROUP(bld, group):
    '''set the current build group'''
    if not 'USING_BUILD_GROUPS' in bld.env:
        return
    bld.set_group(group)
Build.BuildContext.SET_BUILD_GROUP = SET_BUILD_GROUP



@conf
def ENABLE_TIMESTAMP_DEPENDENCIES(conf):
    """use timestamps instead of file contents for deps
    this currently doesn't work"""
    def h_file(filename):
        import stat
        st = os.stat(filename)
        if stat.S_ISDIR(st[stat.ST_MODE]): raise IOError('not a file')
        m = Utils.md5()
        m.update(str(st.st_mtime))
        m.update(str(st.st_size))
        m.update(filename)
        return m.digest()
    Utils.h_file = h_file



##############################
# handle the creation of links for libraries and binaries
# note that we use a relative symlink path to allow the whole tree
# to me moved/copied elsewhere without breaking the links
t = Task.simple_task_type('symlink_lib', 'rm -f ${LINK_TARGET} && ln -s ${LINK_SOURCE} ${LINK_TARGET}',
                          shell=True, color='PINK', ext_in='.bin')
t.quiet = True

@feature('symlink_lib')
@after('apply_link')
def symlink_lib(self):
    '''symlink a shared lib'''
    tsk = self.create_task('symlink_lib', self.link_task.outputs[0])

    # calculat the link target and put it in the environment
    soext=""
    vnum = getattr(self, 'vnum', None)
    if vnum is not None:
        soext = '.' + vnum.split('.')[0]

    link_target = getattr(self, 'link_name', '')
    if link_target == '':
        link_target = '%s/lib%s.so%s' % (LIB_PATH, self.target, soext)


    link_source = os_path_relpath(self.link_task.outputs[0].abspath(self.env),
                                  os.path.join(self.env.BUILD_DIRECTORY, link_target))

    tsk.env.LINK_TARGET = link_target
    tsk.env.LINK_SOURCE = link_source[3:]
    debug('task_gen: LINK for %s is %s -> %s',
          self.name, tsk.env.LINK_SOURCE, tsk.env.LINK_TARGET)


t = Task.simple_task_type('symlink_bin', 'rm -f ${BIN_TARGET} && ln -s ${SRC} ${BIN_TARGET}',
                          shell=True, color='PINK', ext_in='.bin')
t.quiet = True

@feature('symlink_bin')
@after('apply_link')
def symlink_bin(self):
    '''symlink a binary'''
    if Options.is_install:
        # we don't want to copy the install binary, as
        # that has the install rpath, not the build rpath
        # The rpath of the binaries in bin/default/foo/blah is different
        # during the install phase, as distros insist on not using rpath in installed binaries
        return
    tsk = self.create_task('symlink_bin', self.link_task.outputs[0])

    tsk.env.BIN_TARGET = self.target
    debug('task_gen: BIN_TARGET for %s is %s', self.name, tsk.env.BIN_TARGET)




t = Task.simple_task_type('copy_script', 'rm -f ${LINK_TARGET} && ln -s ${SRC[0].abspath(env)} ${LINK_TARGET}',
                          shell=True, color='PINK', ext_in='.bin')
t.quiet = True

@feature('copy_script')
@before('apply_link')
def copy_script(self):
    tsk = self.create_task('copy_script', self.allnodes[0])
    tsk.env.TARGET = self.target

def SAMBA_SCRIPT(bld, name, pattern, installdir, installname=None):
    '''used to copy scripts from the source tree into the build directory
       for use by selftest'''

    source = bld.path.ant_glob(pattern)

    bld.SET_BUILD_GROUP('build_source')
    for s in TO_LIST(source):
        iname = s
        if installname != None:
            iname = installname
        target = os.path.join(installdir, iname)
        tgtdir = os.path.dirname(os.path.join(bld.srcnode.abspath(bld.env), '..', target))
        mkdir_p(tgtdir)
        t = bld(features='copy_script',
                source       = s,
                target       = target,
                always       = True,
                install_path = None)
        t.env.LINK_TARGET = target

Build.BuildContext.SAMBA_SCRIPT = SAMBA_SCRIPT


def install_file(bld, destdir, file, chmod=0644, flat=False,
                 python_fixup=False, destname=None):
    '''install a file'''
    destdir = bld.EXPAND_VARIABLES(destdir)
    if not destname:
        destname = file
        if flat:
            destname = os.path.basename(destname)
    dest = os.path.join(destdir, destname)
    if python_fixup:
        # fixup the python path it will use to find Samba modules
        inst_file = file + '.inst'
        bld.SAMBA_GENERATOR('python_%s' % destname,
                            rule="sed 's|\(sys.path.insert.*\)bin/python\(.*\)$|\\1${PYTHONDIR}\\2|g' < ${SRC} > ${TGT}",
                            source=file,
                            target=inst_file)
        file = inst_file
    bld.install_as(dest, file, chmod=chmod)


def INSTALL_FILES(bld, destdir, files, chmod=0644, flat=False,
                  python_fixup=False, destname=None):
    '''install a set of files'''
    for f in TO_LIST(files):
        install_file(bld, destdir, f, chmod=chmod, flat=flat,
                     python_fixup=python_fixup, destname=destname)
Build.BuildContext.INSTALL_FILES = INSTALL_FILES


def INSTALL_WILDCARD(bld, destdir, pattern, chmod=0644, flat=False,
                     python_fixup=False, exclude=None):
    '''install a set of files matching a wildcard pattern'''
    files=TO_LIST(bld.path.ant_glob(pattern))
    if exclude:
        for f in files[:]:
            if fnmatch.fnmatch(f, exclude):
                files.remove(f)
    INSTALL_FILES(bld, destdir, files, chmod=chmod, flat=flat, python_fixup=python_fixup)
Build.BuildContext.INSTALL_WILDCARD = INSTALL_WILDCARD


def PUBLIC_HEADERS(bld, public_headers, header_path=None):
    '''install some headers

    header_path may either be a string that is added to the INCLUDEDIR,
    or it can be a dictionary of wildcard patterns which map to destination
    directories relative to INCLUDEDIR
    '''
    dest = '${INCLUDEDIR}'
    if isinstance(header_path, str):
        dest += '/' + header_path
    for h in TO_LIST(public_headers):
        hdest = dest
        if isinstance(header_path, list):
            for (p1, dir) in header_path:
                found_match=False
                lst = TO_LIST(p1)
                for p2 in lst:
                    if fnmatch.fnmatch(h, p2):
                        if dir:
                            hdest = os.path.join(hdest, dir)
                        found_match=True
                        break
                if found_match: break
        if h.find(':') != -1:
            hs=h.split(':')
            INSTALL_FILES(bld, hdest, hs[0], flat=True, destname=hs[1])
        else:
            INSTALL_FILES(bld, hdest, h, flat=True)
Build.BuildContext.PUBLIC_HEADERS = PUBLIC_HEADERS


def subst_at_vars(task):
    '''substiture @VAR@ style variables in a file'''
    src = task.inputs[0].srcpath(task.env)
    tgt = task.outputs[0].bldpath(task.env)

    f = open(src, 'r')
    s = f.read()
    f.close()
    # split on the vars
    a = re.split('(@\w+@)', s)
    out = []
    for v in a:
        if re.match('@\w+@', v):
            vname = v[1:-1]
            if not vname in task.env and vname.upper() in task.env:
                vname = vname.upper()
            if not vname in task.env:
                print "Unknown substitution %s in %s" % (v, task.name)
                raise
            v = task.env[vname]
        out.append(v)
    contents = ''.join(out)
    f = open(tgt, 'w')
    s = f.write(contents)
    f.close()
    return 0



def PKG_CONFIG_FILES(bld, pc_files, vnum=None):
    '''install some pkg_config pc files'''
    dest = '${PKGCONFIGDIR}'
    dest = bld.EXPAND_VARIABLES(dest)
    for f in TO_LIST(pc_files):
        base=os.path.basename(f)
        t = bld.SAMBA_GENERATOR('PKGCONFIG_%s' % base,
                                rule=subst_at_vars,
                                source=f+'.in',
                                target=f)
        if vnum:
            t.env.PACKAGE_VERSION = vnum
        INSTALL_FILES(bld, dest, f, flat=True, destname=base)
Build.BuildContext.PKG_CONFIG_FILES = PKG_CONFIG_FILES



#############################################################
# give a nicer display when building different types of files
def progress_display(self, msg, fname):
    col1 = Logs.colors(self.color)
    col2 = Logs.colors.NORMAL
    total = self.position[1]
    n = len(str(total))
    fs = '[%%%dd/%%%dd] %s %%s%%s%%s\n' % (n, n, msg)
    return fs % (self.position[0], self.position[1], col1, fname, col2)

def link_display(self):
    if Options.options.progress_bar != 0:
        return Task.Task.old_display(self)
    fname = self.outputs[0].bldpath(self.env)
    return progress_display(self, 'Linking', fname)
Task.TaskBase.classes['cc_link'].display = link_display

def samba_display(self):
    if Options.options.progress_bar != 0:
        return Task.Task.old_display(self)
    fname = self.inputs[0].bldpath(self.env)
    if fname[0:3] == '../':
        fname = fname[3:]
    ext_loc = fname.rfind('.')
    if ext_loc == -1:
        return Task.Task.old_display(self)
    ext = fname[ext_loc:]

    ext_map = { '.idl' : 'Compiling IDL',
                '.et'  : 'Compiling ERRTABLE',
                '.asn1': 'Compiling ASN1',
                '.c'   : 'Compiling' }
    if ext in ext_map:
        return progress_display(self, ext_map[ext], fname)
    return Task.Task.old_display(self)

Task.TaskBase.classes['Task'].old_display = Task.TaskBase.classes['Task'].display
Task.TaskBase.classes['Task'].display = samba_display