summaryrefslogtreecommitdiffstats
path: root/scripts/lib/recipetool/create.py
blob: b3fd78be7a977be5c764702b672368d7c07c8f19 (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
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
# Recipe creation tool - create command plugin
#
# Copyright (C) 2014-2016 Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import sys
import os
import argparse
import glob
import fnmatch
import re
import json
import logging
import scriptutils
from urllib.parse import urlparse, urldefrag, urlsplit
import hashlib

logger = logging.getLogger('recipetool')

tinfoil = None
plugins = None

def plugin_init(pluginlist):
    # Take a reference to the list so we can use it later
    global plugins
    plugins = pluginlist

def tinfoil_init(instance):
    global tinfoil
    tinfoil = instance

class RecipeHandler(object):
    recipelibmap = {}
    recipeheadermap = {}
    recipecmakefilemap = {}
    recipebinmap = {}

    @staticmethod
    def load_libmap(d):
        '''Load library->recipe mapping'''
        import oe.package

        if RecipeHandler.recipelibmap:
            return
        # First build up library->package mapping
        shlib_providers = oe.package.read_shlib_providers(d)
        libdir = d.getVar('libdir', True)
        base_libdir = d.getVar('base_libdir', True)
        libpaths = list(set([base_libdir, libdir]))
        libname_re = re.compile('^lib(.+)\.so.*$')
        pkglibmap = {}
        for lib, item in shlib_providers.items():
            for path, pkg in item.items():
                if path in libpaths:
                    res = libname_re.match(lib)
                    if res:
                        libname = res.group(1)
                        if not libname in pkglibmap:
                            pkglibmap[libname] = pkg[0]
                    else:
                        logger.debug('unable to extract library name from %s' % lib)

        # Now turn it into a library->recipe mapping
        pkgdata_dir = d.getVar('PKGDATA_DIR', True)
        for libname, pkg in pkglibmap.items():
            try:
                with open(os.path.join(pkgdata_dir, 'runtime', pkg)) as f:
                    for line in f:
                        if line.startswith('PN:'):
                            RecipeHandler.recipelibmap[libname] = line.split(':', 1)[-1].strip()
                            break
            except IOError as ioe:
                if ioe.errno == 2:
                    logger.warn('unable to find a pkgdata file for package %s' % pkg)
                else:
                    raise

        # Some overrides - these should be mapped to the virtual
        RecipeHandler.recipelibmap['GL'] = 'virtual/libgl'
        RecipeHandler.recipelibmap['EGL'] = 'virtual/egl'
        RecipeHandler.recipelibmap['GLESv2'] = 'virtual/libgles2'

    @staticmethod
    def load_devel_filemap(d):
        '''Build up development file->recipe mapping'''
        if RecipeHandler.recipeheadermap:
            return
        pkgdata_dir = d.getVar('PKGDATA_DIR', True)
        includedir = d.getVar('includedir', True)
        cmakedir = os.path.join(d.getVar('libdir', True), 'cmake')
        for pkg in glob.glob(os.path.join(pkgdata_dir, 'runtime', '*-dev')):
            with open(os.path.join(pkgdata_dir, 'runtime', pkg)) as f:
                pn = None
                headers = []
                cmakefiles = []
                for line in f:
                    if line.startswith('PN:'):
                        pn = line.split(':', 1)[-1].strip()
                    elif line.startswith('FILES_INFO:'):
                        val = line.split(':', 1)[1].strip()
                        dictval = json.loads(val)
                        for fullpth in sorted(dictval):
                            if fullpth.startswith(includedir) and fullpth.endswith('.h'):
                                headers.append(os.path.relpath(fullpth, includedir))
                            elif fullpth.startswith(cmakedir) and fullpth.endswith('.cmake'):
                                cmakefiles.append(os.path.relpath(fullpth, cmakedir))
                if pn and headers:
                    for header in headers:
                        RecipeHandler.recipeheadermap[header] = pn
                if pn and cmakefiles:
                    for fn in cmakefiles:
                        RecipeHandler.recipecmakefilemap[fn] = pn

    @staticmethod
    def load_binmap(d):
        '''Build up native binary->recipe mapping'''
        if RecipeHandler.recipebinmap:
            return
        sstate_manifests = d.getVar('SSTATE_MANIFESTS', True)
        staging_bindir_native = d.getVar('STAGING_BINDIR_NATIVE', True)
        build_arch = d.getVar('BUILD_ARCH', True)
        fileprefix = 'manifest-%s-' % build_arch
        for fn in glob.glob(os.path.join(sstate_manifests, '%s*-native.populate_sysroot' % fileprefix)):
            with open(fn, 'r') as f:
                pn = os.path.basename(fn).rsplit('.', 1)[0][len(fileprefix):]
                for line in f:
                    if line.startswith(staging_bindir_native):
                        prog = os.path.basename(line.rstrip())
                        RecipeHandler.recipebinmap[prog] = pn

    @staticmethod
    def checkfiles(path, speclist, recursive=False):
        results = []
        if recursive:
            for root, _, files in os.walk(path):
                for fn in files:
                    for spec in speclist:
                        if fnmatch.fnmatch(fn, spec):
                            results.append(os.path.join(root, fn))
        else:
            for spec in speclist:
                results.extend(glob.glob(os.path.join(path, spec)))
        return results

    @staticmethod
    def handle_depends(libdeps, pcdeps, deps, outlines, values, d):
        if pcdeps:
            recipemap = read_pkgconfig_provides(d)
        if libdeps:
            RecipeHandler.load_libmap(d)

        ignorelibs = ['socket']
        ignoredeps = ['gcc-runtime', 'glibc', 'uclibc', 'musl', 'tar-native', 'binutils-native', 'coreutils-native']

        unmappedpc = []
        pcdeps = list(set(pcdeps))
        for pcdep in pcdeps:
            if isinstance(pcdep, str):
                recipe = recipemap.get(pcdep, None)
                if recipe:
                    deps.append(recipe)
                else:
                    if not pcdep.startswith('$'):
                        unmappedpc.append(pcdep)
            else:
                for item in pcdep:
                    recipe = recipemap.get(pcdep, None)
                    if recipe:
                        deps.append(recipe)
                        break
                else:
                    unmappedpc.append('(%s)' % ' or '.join(pcdep))

        unmappedlibs = []
        for libdep in libdeps:
            if isinstance(libdep, tuple):
                lib, header = libdep
            else:
                lib = libdep
                header = None

            if lib in ignorelibs:
                logger.debug('Ignoring library dependency %s' % lib)
                continue

            recipe = RecipeHandler.recipelibmap.get(lib, None)
            if recipe:
                deps.append(recipe)
            elif recipe is None:
                if header:
                    RecipeHandler.load_devel_filemap(d)
                    recipe = RecipeHandler.recipeheadermap.get(header, None)
                    if recipe:
                        deps.append(recipe)
                    elif recipe is None:
                        unmappedlibs.append(lib)
                else:
                    unmappedlibs.append(lib)

        deps = set(deps).difference(set(ignoredeps))

        if unmappedpc:
            outlines.append('# NOTE: unable to map the following pkg-config dependencies: %s' % ' '.join(unmappedpc))
            outlines.append('#       (this is based on recipes that have previously been built and packaged)')

        if unmappedlibs:
            outlines.append('# NOTE: the following library dependencies are unknown, ignoring: %s' % ' '.join(list(set(unmappedlibs))))
            outlines.append('#       (this is based on recipes that have previously been built and packaged)')

        if deps:
            values['DEPENDS'] = ' '.join(deps)

    def genfunction(self, outlines, funcname, content, python=False, forcespace=False):
        if python:
            prefix = 'python '
        else:
            prefix = ''
        outlines.append('%s%s () {' % (prefix, funcname))
        if python or forcespace:
            indent = '    '
        else:
            indent = '\t'
        addnoop = not python
        for line in content:
            outlines.append('%s%s' % (indent, line))
            if addnoop:
                strippedline = line.lstrip()
                if strippedline and not strippedline.startswith('#'):
                    addnoop = False
        if addnoop:
            # Without this there'll be a syntax error
            outlines.append('%s:' % indent)
        outlines.append('}')
        outlines.append('')

    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        return False


def validate_pv(pv):
    if not pv or '_version' in pv.lower() or pv[0] not in '0123456789':
        return False
    return True

def determine_from_filename(srcfile):
    """Determine name and version from a filename"""
    part = ''
    if '.tar.' in srcfile:
        namepart = srcfile.split('.tar.')[0].lower()
    else:
        namepart = os.path.splitext(srcfile)[0].lower()
    if is_package(srcfile):
        # Force getting the value from the package metadata
        return None, None
    else:
        splitval = namepart.rsplit('_', 1)
    if len(splitval) == 1:
        splitval = namepart.rsplit('-', 1)
    pn = splitval[0].replace('_', '-')
    if len(splitval) > 1:
        if splitval[1][0] in '0123456789':
            pv = splitval[1]
        else:
            pn = '-'.join(splitval).replace('_', '-')
            pv = None
    else:
        pv = None
    return (pn, pv)

def determine_from_url(srcuri):
    """Determine name and version from a URL"""
    pn = None
    pv = None
    parseres = urlparse(srcuri.lower().split(';', 1)[0])
    if parseres.path:
        if 'github.com' in parseres.netloc:
            res = re.search(r'.*/(.*?)/archive/(.*)-final\.(tar|zip)', parseres.path)
            if res:
                pn = res.group(1).strip().replace('_', '-')
                pv = res.group(2).strip().replace('_', '.')
            else:
                res = re.search(r'.*/(.*?)/archive/v?(.*)\.(tar|zip)', parseres.path)
                if res:
                    pn = res.group(1).strip().replace('_', '-')
                    pv = res.group(2).strip().replace('_', '.')
        elif 'bitbucket.org' in parseres.netloc:
            res = re.search(r'.*/(.*?)/get/[a-zA-Z_-]*([0-9][0-9a-zA-Z_.]*)\.(tar|zip)', parseres.path)
            if res:
                pn = res.group(1).strip().replace('_', '-')
                pv = res.group(2).strip().replace('_', '.')

        if not pn and not pv:
            srcfile = os.path.basename(parseres.path.rstrip('/'))
            pn, pv = determine_from_filename(srcfile)

    logger.debug('Determined from source URL: name = "%s", version = "%s"' % (pn, pv))
    return (pn, pv)

def supports_srcrev(uri):
    localdata = bb.data.createCopy(tinfoil.config_data)
    # This is a bit sad, but if you don't have this set there can be some
    # odd interactions with the urldata cache which lead to errors
    localdata.setVar('SRCREV', '${AUTOREV}')
    bb.data.update_data(localdata)
    fetcher = bb.fetch2.Fetch([uri], localdata)
    urldata = fetcher.ud
    for u in urldata:
        if urldata[u].method.supports_srcrev():
            return True
    return False

def reformat_git_uri(uri):
    '''Convert any http[s]://....git URI into git://...;protocol=http[s]'''
    checkuri = uri.split(';', 1)[0]
    if checkuri.endswith('.git') or '/git/' in checkuri:
        res = re.match('(https?)://([^;]+(\.git)?)(;.*)?$', uri)
        if res:
            # Need to switch the URI around so that the git fetcher is used
            return 'git://%s;protocol=%s%s' % (res.group(2), res.group(1), res.group(4) or '')
    return uri

def is_package(url):
    '''Check if a URL points to a package'''
    checkurl = url.split(';', 1)[0]
    if checkurl.endswith(('.deb', '.ipk', '.rpm', '.srpm')):
        return True
    return False

def create_recipe(args):
    import bb.process
    import tempfile
    import shutil
    import oe.recipeutils

    pkgarch = ""
    if args.machine:
        pkgarch = "${MACHINE_ARCH}"

    extravalues = {}
    checksums = (None, None)
    tempsrc = ''
    srcsubdir = ''
    srcrev = '${AUTOREV}'
    if '://' in args.source:
        # Fetch a URL
        fetchuri = reformat_git_uri(urldefrag(args.source)[0])
        if args.binary:
            # Assume the archive contains the directory structure verbatim
            # so we need to extract to a subdirectory
            fetchuri += ';subdir=${BP}'
        srcuri = fetchuri
        rev_re = re.compile(';rev=([^;]+)')
        res = rev_re.search(srcuri)
        if res:
            srcrev = res.group(1)
            srcuri = rev_re.sub('', srcuri)
        tempsrc = tempfile.mkdtemp(prefix='recipetool-')
        srctree = tempsrc
        if fetchuri.startswith('npm://'):
            # Check if npm is available
            npm = bb.utils.which(tinfoil.config_data.getVar('PATH', True), 'npm')
            if not npm:
                logger.error('npm:// URL requested but npm is not available - you need to either build nodejs-native or install npm using your package manager')
                sys.exit(1)
        logger.info('Fetching %s...' % srcuri)
        try:
            checksums = scriptutils.fetch_uri(tinfoil.config_data, fetchuri, srctree, srcrev)
        except bb.fetch2.BBFetchException as e:
            logger.error(str(e).rstrip())
            sys.exit(1)
        dirlist = os.listdir(srctree)
        if 'git.indirectionsymlink' in dirlist:
            dirlist.remove('git.indirectionsymlink')
        if len(dirlist) == 1:
            singleitem = os.path.join(srctree, dirlist[0])
            if os.path.isdir(singleitem):
                # We unpacked a single directory, so we should use that
                srcsubdir = dirlist[0]
                srctree = os.path.join(srctree, srcsubdir)
            else:
                with open(singleitem, 'r') as f:
                    if '<html' in f.read(100).lower():
                        logger.error('Fetching "%s" returned a single HTML page - check the URL is correct and functional' % fetchuri)
                        sys.exit(1)

        if is_package(fetchuri):
            tmpfdir = tempfile.mkdtemp(prefix='recipetool-')
            try:
                pkgfile = None
                try:
                    fileuri = fetchuri + ';unpack=0'
                    scriptutils.fetch_uri(tinfoil.config_data, fileuri, tmpfdir, srcrev)
                    for root, _, files in os.walk(tmpfdir):
                        for f in files:
                            pkgfile = os.path.join(root, f)
                            break
                except bb.fetch2.BBFetchException as e:
                    logger.warn('Second fetch to get metadata failed: %s' % str(e).rstrip())

                if pkgfile:
                    if pkgfile.endswith(('.deb', '.ipk')):
                        stdout, _ = bb.process.run('ar x %s control.tar.gz' % pkgfile, cwd=tmpfdir)
                        stdout, _ = bb.process.run('tar xf control.tar.gz ./control', cwd=tmpfdir)
                        values = convert_debian(tmpfdir)
                        extravalues.update(values)
                    elif pkgfile.endswith(('.rpm', '.srpm')):
                        stdout, _ = bb.process.run('rpm -qp --xml %s > pkginfo.xml' % pkgfile, cwd=tmpfdir)
                        values = convert_rpm_xml(os.path.join(tmpfdir, 'pkginfo.xml'))
                        extravalues.update(values)
            finally:
                shutil.rmtree(tmpfdir)
    else:
        # Assume we're pointing to an existing source tree
        if args.extract_to:
            logger.error('--extract-to cannot be specified if source is a directory')
            sys.exit(1)
        if not os.path.isdir(args.source):
            logger.error('Invalid source directory %s' % args.source)
            sys.exit(1)
        srctree = args.source
        srcuri = ''
        if os.path.exists(os.path.join(srctree, '.git')):
            # Try to get upstream repo location from origin remote
            try:
                stdout, _ = bb.process.run('git remote -v', cwd=srctree, shell=True)
            except bb.process.ExecutionError as e:
                stdout = None
            if stdout:
                for line in stdout.splitlines():
                    splitline = line.split()
                    if len(splitline) > 1:
                        if splitline[0] == 'origin' and '://' in splitline[1]:
                            srcuri = reformat_git_uri(splitline[1])
                            srcsubdir = 'git'
                            break

    if args.src_subdir:
        srcsubdir = os.path.join(srcsubdir, args.src_subdir)
        srctree_use = os.path.join(srctree, args.src_subdir)
    else:
        srctree_use = srctree

    if args.outfile and os.path.isdir(args.outfile):
        outfile = None
        outdir = args.outfile
    else:
        outfile = args.outfile
        outdir = None
    if outfile and outfile != '-':
        if os.path.exists(outfile):
            logger.error('Output file %s already exists' % outfile)
            sys.exit(1)

    lines_before = []
    lines_after = []

    lines_before.append('# Recipe created by %s' % os.path.basename(sys.argv[0]))
    lines_before.append('# This is the basis of a recipe and may need further editing in order to be fully functional.')
    lines_before.append('# (Feel free to remove these comments when editing.)')
    # We need a blank line here so that patch_recipe_lines can rewind before the LICENSE comments
    lines_before.append('')

    licvalues = guess_license(srctree_use)
    lic_files_chksum = []
    if licvalues:
        licenses = []
        for licvalue in licvalues:
            if not licvalue[0] in licenses:
                licenses.append(licvalue[0])
            lic_files_chksum.append('file://%s;md5=%s' % (licvalue[1], licvalue[2]))
        lines_before.append('# WARNING: the following LICENSE and LIC_FILES_CHKSUM values are best guesses - it is')
        lines_before.append('# your responsibility to verify that the values are complete and correct.')
        if len(licvalues) > 1:
            lines_before.append('#')
            lines_before.append('# NOTE: multiple licenses have been detected; if that is correct you should separate')
            lines_before.append('# these in the LICENSE value using & if the multiple licenses all apply, or | if there')
            lines_before.append('# is a choice between the multiple licenses. If in doubt, check the accompanying')
            lines_before.append('# documentation to determine which situation is applicable.')
    else:
        lines_before.append('# Unable to find any files that looked like license statements. Check the accompanying')
        lines_before.append('# documentation and source headers and set LICENSE and LIC_FILES_CHKSUM accordingly.')
        lines_before.append('#')
        lines_before.append('# NOTE: LICENSE is being set to "CLOSED" to allow you to at least start building - if')
        lines_before.append('# this is not accurate with respect to the licensing of the software being built (it')
        lines_before.append('# will not be in most cases) you must specify the correct value before using this')
        lines_before.append('# recipe for anything other than initial testing/development!')
        licenses = ['CLOSED']
    pkg_license = extravalues.pop('LICENSE', None)
    if pkg_license:
        if licenses == ['Unknown']:
            lines_before.append('# NOTE: The following LICENSE value was determined from the original package metadata')
            licenses = [pkg_license]
        else:
            lines_before.append('# NOTE: Original package metadata indicates license is: %s' % pkg_license)
    lines_before.append('LICENSE = "%s"' % ' & '.join(licenses))
    lines_before.append('LIC_FILES_CHKSUM = "%s"' % ' \\\n                    '.join(lic_files_chksum))
    lines_before.append('')

    classes = []

    # FIXME This is kind of a hack, we probably ought to be using bitbake to do this
    pn = None
    pv = None
    if outfile:
        recipefn = os.path.splitext(os.path.basename(outfile))[0]
        fnsplit = recipefn.split('_')
        if len(fnsplit) > 1:
            pn = fnsplit[0]
            pv = fnsplit[1]
        else:
            pn = recipefn

    if args.version:
        pv = args.version

    if args.name:
        pn = args.name
        if args.name.endswith('-native'):
            if args.also_native:
                logger.error('--also-native cannot be specified for a recipe named *-native (*-native denotes a recipe that is already only for native) - either remove the -native suffix from the name or drop --also-native')
                sys.exit(1)
            classes.append('native')
        elif args.name.startswith('nativesdk-'):
            if args.also_native:
                logger.error('--also-native cannot be specified for a recipe named nativesdk-* (nativesdk-* denotes a recipe that is already only for nativesdk)')
                sys.exit(1)
            classes.append('nativesdk')

    if pv and pv not in 'git svn hg'.split():
        realpv = pv
    else:
        realpv = None

    if srcuri and not realpv or not pn:
        name_pn, name_pv = determine_from_url(srcuri)
        if name_pn and not pn:
            pn = name_pn
        if name_pv and not realpv:
            realpv = name_pv


    if not srcuri:
        lines_before.append('# No information for SRC_URI yet (only an external source tree was specified)')
    lines_before.append('SRC_URI = "%s"' % srcuri)
    (md5value, sha256value) = checksums
    if md5value:
        lines_before.append('SRC_URI[md5sum] = "%s"' % md5value)
    if sha256value:
        lines_before.append('SRC_URI[sha256sum] = "%s"' % sha256value)
    if srcuri and supports_srcrev(srcuri):
        lines_before.append('')
        lines_before.append('# Modify these as desired')
        lines_before.append('PV = "%s+git${SRCPV}"' % (realpv or '1.0'))
        if not args.autorev and srcrev == '${AUTOREV}':
            if os.path.exists(os.path.join(srctree, '.git')):
                (stdout, _) = bb.process.run('git rev-parse HEAD', cwd=srctree)
            srcrev = stdout.rstrip()
        lines_before.append('SRCREV = "%s"' % srcrev)
    lines_before.append('')

    if srcsubdir and not args.binary:
        # (for binary packages we explicitly specify subdir= when fetching to
        # match the default value of S, so we don't need to set it in that case)
        lines_before.append('S = "${WORKDIR}/%s"' % srcsubdir)
        lines_before.append('')

    if pkgarch:
        lines_after.append('PACKAGE_ARCH = "%s"' % pkgarch)
        lines_after.append('')

    if args.binary:
        lines_after.append('INSANE_SKIP_${PN} += "already-stripped"')
        lines_after.append('')

    # Find all plugins that want to register handlers
    logger.debug('Loading recipe handlers')
    raw_handlers = []
    for plugin in plugins:
        if hasattr(plugin, 'register_recipe_handlers'):
            plugin.register_recipe_handlers(raw_handlers)
    # Sort handlers by priority
    handlers = []
    for i, handler in enumerate(raw_handlers):
        if isinstance(handler, tuple):
            handlers.append((handler[0], handler[1], i))
        else:
            handlers.append((handler, 0, i))
    handlers.sort(key=lambda item: (item[1], -item[2]), reverse=True)
    for handler, priority, _ in handlers:
        logger.debug('Handler: %s (priority %d)' % (handler.__class__.__name__, priority))
    handlers = [item[0] for item in handlers]

    # Apply the handlers
    handled = []
    handled.append(('license', licvalues))

    if args.binary:
        classes.append('bin_package')
        handled.append('buildsystem')

    for handler in handlers:
        handler.process(srctree_use, classes, lines_before, lines_after, handled, extravalues)

    extrafiles = extravalues.pop('extrafiles', {})
    extra_pn = extravalues.pop('PN', None)
    extra_pv = extravalues.pop('PV', None)

    if extra_pv and not realpv:
        realpv = extra_pv
        if not validate_pv(realpv):
            realpv = None
        else:
            realpv = realpv.lower().split()[0]
            if '_' in realpv:
                realpv = realpv.replace('_', '-')
    if extra_pn and not pn:
        pn = extra_pn
        if pn.startswith('GNU '):
            pn = pn[4:]
        if ' ' in pn:
            # Probably a descriptive identifier rather than a proper name
            pn = None
        else:
            pn = pn.lower()
            if '_' in pn:
                pn = pn.replace('_', '-')

    if not outfile:
        if not pn:
            logger.error('Unable to determine short program name from source tree - please specify name with -N/--name or output file name with -o/--outfile')
            # devtool looks for this specific exit code, so don't change it
            sys.exit(15)
        else:
            if srcuri and srcuri.startswith(('git://', 'hg://', 'svn://')):
                outfile = '%s_%s.bb' % (pn, srcuri.split(':', 1)[0])
            elif realpv:
                outfile = '%s_%s.bb' % (pn, realpv)
            else:
                outfile = '%s.bb' % pn
            if outdir:
                outfile = os.path.join(outdir, outfile)
            # We need to check this again
            if os.path.exists(outfile):
                logger.error('Output file %s already exists' % outfile)
                sys.exit(1)

    # Move any extra files the plugins created to a directory next to the recipe
    if extrafiles:
        if outfile == '-':
            extraoutdir = pn
        else:
            extraoutdir = os.path.join(os.path.dirname(outfile), pn)
        bb.utils.mkdirhier(extraoutdir)
        for destfn, extrafile in extrafiles.items():
            shutil.move(extrafile, os.path.join(extraoutdir, destfn))

    lines = lines_before
    lines_before = []
    skipblank = True
    for line in lines:
        if skipblank:
            skipblank = False
            if not line:
                continue
        if line.startswith('S = '):
            if realpv and pv not in 'git svn hg'.split():
                line = line.replace(realpv, '${PV}')
            if pn:
                line = line.replace(pn, '${BPN}')
            if line == 'S = "${WORKDIR}/${BPN}-${PV}"':
                skipblank = True
                continue
        elif line.startswith('SRC_URI = '):
            if realpv:
                line = line.replace(realpv, '${PV}')
        elif line.startswith('PV = '):
            if realpv:
                line = re.sub('"[^+]*\+', '"%s+' % realpv, line)
        lines_before.append(line)

    if args.also_native:
        lines = lines_after
        lines_after = []
        bbclassextend = None
        for line in lines:
            if line.startswith('BBCLASSEXTEND ='):
                splitval = line.split('"')
                if len(splitval) > 1:
                    bbclassextend = splitval[1].split()
                    if not 'native' in bbclassextend:
                        bbclassextend.insert(0, 'native')
                line = 'BBCLASSEXTEND = "%s"' % ' '.join(bbclassextend)
            lines_after.append(line)
        if not bbclassextend:
            lines_after.append('BBCLASSEXTEND = "native"')

    outlines = []
    outlines.extend(lines_before)
    if classes:
        if outlines[-1] and not outlines[-1].startswith('#'):
            outlines.append('')
        outlines.append('inherit %s' % ' '.join(classes))
        outlines.append('')
    outlines.extend(lines_after)

    if extravalues:
        if 'LICENSE' in extravalues and not licvalues:
            # Don't blow away 'CLOSED' value that comments say we set
            del extravalues['LICENSE']
        _, outlines = oe.recipeutils.patch_recipe_lines(outlines, extravalues, trailing_newline=False)

    if args.extract_to:
        scriptutils.git_convert_standalone_clone(srctree)
        if os.path.isdir(args.extract_to):
            # If the directory exists we'll move the temp dir into it instead of
            # its contents - of course, we could try to always move its contents
            # but that is a pain if there are symlinks; the simplest solution is
            # to just remove it first
            os.rmdir(args.extract_to)
        shutil.move(srctree, args.extract_to)
        if tempsrc == srctree:
            tempsrc = None
        logger.info('Source extracted to %s' % args.extract_to)

    if outfile == '-':
        sys.stdout.write('\n'.join(outlines) + '\n')
    else:
        with open(outfile, 'w') as f:
            f.write('\n'.join(outlines) + '\n')
        logger.info('Recipe %s has been created; further editing may be required to make it fully functional' % outfile)

    if tempsrc:
        shutil.rmtree(tempsrc)

    return 0

def get_license_md5sums(d, static_only=False):
    import bb.utils
    md5sums = {}
    if not static_only:
        # Gather md5sums of license files in common license dir
        commonlicdir = d.getVar('COMMON_LICENSE_DIR', True)
        for fn in os.listdir(commonlicdir):
            md5value = bb.utils.md5_file(os.path.join(commonlicdir, fn))
            md5sums[md5value] = fn
    # The following were extracted from common values in various recipes
    # (double checking the license against the license file itself, not just
    # the LICENSE value in the recipe)
    md5sums['94d55d512a9ba36caa9b7df079bae19f'] = 'GPLv2'
    md5sums['b234ee4d69f5fce4486a80fdaf4a4263'] = 'GPLv2'
    md5sums['59530bdf33659b29e73d4adb9f9f6552'] = 'GPLv2'
    md5sums['0636e73ff0215e8d672dc4c32c317bb3'] = 'GPLv2'
    md5sums['eb723b61539feef013de476e68b5c50a'] = 'GPLv2'
    md5sums['751419260aa954499f7abaabaa882bbe'] = 'GPLv2'
    md5sums['393a5ca445f6965873eca0259a17f833'] = 'GPLv2'
    md5sums['12f884d2ae1ff87c09e5b7ccc2c4ca7e'] = 'GPLv2'
    md5sums['8ca43cbc842c2336e835926c2166c28b'] = 'GPLv2'
    md5sums['ebb5c50ab7cab4baeffba14977030c07'] = 'GPLv2'
    md5sums['c93c0550bd3173f4504b2cbd8991e50b'] = 'GPLv2'
    md5sums['9ac2e7cff1ddaf48b6eab6028f23ef88'] = 'GPLv2'
    md5sums['4325afd396febcb659c36b49533135d4'] = 'GPLv2'
    md5sums['18810669f13b87348459e611d31ab760'] = 'GPLv2'
    md5sums['d7810fab7487fb0aad327b76f1be7cd7'] = 'GPLv2' # the Linux kernel's COPYING file
    md5sums['bbb461211a33b134d42ed5ee802b37ff'] = 'LGPLv2.1'
    md5sums['7fbc338309ac38fefcd64b04bb903e34'] = 'LGPLv2.1'
    md5sums['4fbd65380cdd255951079008b364516c'] = 'LGPLv2.1'
    md5sums['2d5025d4aa3495befef8f17206a5b0a1'] = 'LGPLv2.1'
    md5sums['fbc093901857fcd118f065f900982c24'] = 'LGPLv2.1'
    md5sums['a6f89e2100d9b6cdffcea4f398e37343'] = 'LGPLv2.1'
    md5sums['d8045f3b8f929c1cb29a1e3fd737b499'] = 'LGPLv2.1'
    md5sums['fad9b3332be894bab9bc501572864b29'] = 'LGPLv2.1'
    md5sums['3bf50002aefd002f49e7bb854063f7e7'] = 'LGPLv2'
    md5sums['9f604d8a4f8e74f4f5140845a21b6674'] = 'LGPLv2'
    md5sums['5f30f0716dfdd0d91eb439ebec522ec2'] = 'LGPLv2'
    md5sums['55ca817ccb7d5b5b66355690e9abc605'] = 'LGPLv2'
    md5sums['252890d9eee26aab7b432e8b8a616475'] = 'LGPLv2'
    md5sums['3214f080875748938ba060314b4f727d'] = 'LGPLv2'
    md5sums['db979804f025cf55aabec7129cb671ed'] = 'LGPLv2'
    md5sums['d32239bcb673463ab874e80d47fae504'] = 'GPLv3'
    md5sums['f27defe1e96c2e1ecd4e0c9be8967949'] = 'GPLv3'
    md5sums['6a6a8e020838b23406c81b19c1d46df6'] = 'LGPLv3'
    md5sums['3b83ef96387f14655fc854ddc3c6bd57'] = 'Apache-2.0'
    md5sums['385c55653886acac3821999a3ccd17b3'] = 'Artistic-1.0 | GPL-2.0' # some perl modules
    md5sums['54c7042be62e169199200bc6477f04d1'] = 'BSD-3-Clause'
    return md5sums

def crunch_license(licfile):
    '''
    Remove non-material text from a license file and then check
    its md5sum against a known list. This works well for licenses
    which contain a copyright statement, but is also a useful way
    to handle people's insistence upon reformatting the license text
    slightly (with no material difference to the text of the
    license).
    '''

    import oe.utils

    # Note: these are carefully constructed!
    license_title_re = re.compile('^\(?(#+ *)?(The )?.{1,10} [Ll]icen[sc]e( \(.{1,10}\))?\)?:?$')
    license_statement_re = re.compile('^This (project|software) is( free software)? released under the .{1,10} [Ll]icen[sc]e:?$')
    copyright_re = re.compile('^(#+)? *Copyright .*$')

    crunched_md5sums = {}
    # The following two were gleaned from the "forever" npm package
    crunched_md5sums['0a97f8e4cbaf889d6fa51f84b89a79f6'] = 'ISC'
    crunched_md5sums['eecf6429523cbc9693547cf2db790b5c'] = 'MIT'
    # https://github.com/vasi/pixz/blob/master/LICENSE
    crunched_md5sums['2f03392b40bbe663597b5bd3cc5ebdb9'] = 'BSD-2-Clause'
    # https://github.com/waffle-gl/waffle/blob/master/LICENSE.txt
    crunched_md5sums['e72e5dfef0b1a4ca8a3d26a60587db66'] = 'BSD-2-Clause'
    # https://github.com/spigwitmer/fakeds1963s/blob/master/LICENSE
    crunched_md5sums['8be76ac6d191671f347ee4916baa637e'] = 'GPLv2'
    # https://github.com/datto/dattobd/blob/master/COPYING
    # http://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/GPLv2.TXT
    crunched_md5sums['1d65c5ad4bf6489f85f4812bf08ae73d'] = 'GPLv2'
    # http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
    # http://git.neil.brown.name/?p=mdadm.git;a=blob;f=COPYING;h=d159169d1050894d3ea3b98e1c965c4058208fe1;hb=HEAD
    crunched_md5sums['fb530f66a7a89ce920f0e912b5b66d4b'] = 'GPLv2'
    # https://github.com/gkos/nrf24/blob/master/COPYING
    crunched_md5sums['7b6aaa4daeafdfa6ed5443fd2684581b'] = 'GPLv2'
    # https://github.com/josch09/resetusb/blob/master/COPYING
    crunched_md5sums['8b8ac1d631a4d220342e83bcf1a1fbc3'] = 'GPLv3'
    # https://github.com/FFmpeg/FFmpeg/blob/master/COPYING.LGPLv2.1
    crunched_md5sums['2ea316ed973ae176e502e2297b574bb3'] = 'LGPLv2.1'
    # unixODBC-2.3.4 COPYING
    crunched_md5sums['1daebd9491d1e8426900b4fa5a422814'] = 'LGPLv2.1'
    # https://github.com/FFmpeg/FFmpeg/blob/master/COPYING.LGPLv3
    crunched_md5sums['2ebfb3bb49b9a48a075cc1425e7f4129'] = 'LGPLv3'
    lictext = []
    with open(licfile, 'r') as f:
        for line in f:
            # Drop opening statements
            if copyright_re.match(line):
                continue
            elif license_title_re.match(line):
                continue
            elif license_statement_re.match(line):
                continue
            # Squash spaces, and replace smart quotes, double quotes
            # and backticks with single quotes
            line = oe.utils.squashspaces(line.strip())
            line = line.replace(u"\u2018", "'").replace(u"\u2019", "'").replace(u"\u201c","'").replace(u"\u201d", "'").replace('"', '\'').replace('`', '\'')
            if line:
                lictext.append(line)

    m = hashlib.md5()
    try:
        m.update(' '.join(lictext).encode('utf-8'))
        md5val = m.hexdigest()
    except UnicodeEncodeError:
        md5val = None
        lictext = ''
    license = crunched_md5sums.get(md5val, None)
    return license, md5val, lictext

def guess_license(srctree):
    import bb
    md5sums = get_license_md5sums(tinfoil.config_data)

    licenses = []
    licspecs = ['*LICEN[CS]E*', 'COPYING*', '*[Ll]icense*', 'LEGAL*', '[Ll]egal*', '*GPL*', 'README.lic*', 'COPYRIGHT*', '[Cc]opyright*']
    licfiles = []
    for root, dirs, files in os.walk(srctree):
        for fn in files:
            for spec in licspecs:
                if fnmatch.fnmatch(fn, spec):
                    fullpath = os.path.join(root, fn)
                    if not fullpath in licfiles:
                        licfiles.append(fullpath)
    for licfile in licfiles:
        md5value = bb.utils.md5_file(licfile)
        license = md5sums.get(md5value, None)
        if not license:
            license, crunched_md5, lictext = crunch_license(licfile)
            if not license:
                license = 'Unknown'
        licenses.append((license, os.path.relpath(licfile, srctree), md5value))

    # FIXME should we grab at least one source file with a license header and add that too?

    return licenses

def split_pkg_licenses(licvalues, packages, outlines, fallback_licenses=None, pn='${PN}'):
    """
    Given a list of (license, path, md5sum) as returned by guess_license(),
    a dict of package name to path mappings, write out a set of
    package-specific LICENSE values.
    """
    pkglicenses = {pn: []}
    for license, licpath, _ in licvalues:
        for pkgname, pkgpath in packages.items():
            if licpath.startswith(pkgpath + '/'):
                if pkgname in pkglicenses:
                    pkglicenses[pkgname].append(license)
                else:
                    pkglicenses[pkgname] = [license]
                break
        else:
            # Accumulate on the main package
            pkglicenses[pn].append(license)
    outlicenses = {}
    for pkgname in packages:
        license = ' '.join(list(set(pkglicenses.get(pkgname, ['Unknown'])))) or 'Unknown'
        if license == 'Unknown' and pkgname in fallback_licenses:
            license = fallback_licenses[pkgname]
        outlines.append('LICENSE_%s = "%s"' % (pkgname, license))
        outlicenses[pkgname] = license.split()
    return outlicenses

def read_pkgconfig_provides(d):
    pkgdatadir = d.getVar('PKGDATA_DIR', True)
    pkgmap = {}
    for fn in glob.glob(os.path.join(pkgdatadir, 'shlibs2', '*.pclist')):
        with open(fn, 'r') as f:
            for line in f:
                pkgmap[os.path.basename(line.rstrip())] = os.path.splitext(os.path.basename(fn))[0]
    recipemap = {}
    for pc, pkg in pkgmap.items():
        pkgdatafile = os.path.join(pkgdatadir, 'runtime', pkg)
        if os.path.exists(pkgdatafile):
            with open(pkgdatafile, 'r') as f:
                for line in f:
                    if line.startswith('PN: '):
                        recipemap[pc] = line.split(':', 1)[1].strip()
    return recipemap

def convert_pkginfo(pkginfofile):
    values = {}
    with open(pkginfofile, 'r') as f:
        indesc = False
        for line in f:
            if indesc:
                if line.strip():
                    values['DESCRIPTION'] += ' ' + line.strip()
                else:
                    indesc = False
            else:
                splitline = line.split(': ', 1)
                key = line[0]
                value = line[1]
                if key == 'LICENSE':
                    for dep in value.split(','):
                        dep = dep.split()[0]
                        mapped = depmap.get(dep, '')
                        if mapped:
                            depends.append(mapped)
                elif key == 'License':
                    values['LICENSE'] = value
                elif key == 'Summary':
                    values['SUMMARY'] = value
                elif key == 'Description':
                    values['DESCRIPTION'] = value
                    indesc = True
    return values

def convert_debian(debpath):
    value_map = {'Package': 'PN',
                 'Version': 'PV',
                 'Section': 'SECTION',
                 'License': 'LICENSE',
                 'Homepage': 'HOMEPAGE'}

    # FIXME extend this mapping - perhaps use distro_alias.inc?
    depmap = {'libz-dev': 'zlib'}

    values = {}
    depends = []
    with open(os.path.join(debpath, 'control')) as f:
        indesc = False
        for line in f:
            if indesc:
                if line.startswith(' '):
                    if line.startswith(' This package contains'):
                        indesc = False
                    else:
                        if 'DESCRIPTION' in values:
                            values['DESCRIPTION'] += ' ' + line.strip()
                        else:
                            values['DESCRIPTION'] = line.strip()
                else:
                    indesc = False
            if not indesc:
                splitline = line.split(':', 1)
                if len(splitline) < 2:
                    continue
                key = splitline[0]
                value = splitline[1].strip()
                if key == 'Build-Depends':
                    for dep in value.split(','):
                        dep = dep.split()[0]
                        mapped = depmap.get(dep, '')
                        if mapped:
                            depends.append(mapped)
                elif key == 'Description':
                    values['SUMMARY'] = value
                    indesc = True
                else:
                    varname = value_map.get(key, None)
                    if varname:
                        values[varname] = value

    #if depends:
    #    values['DEPENDS'] = ' '.join(depends)

    return values

def convert_rpm_xml(xmlfile):
    '''Converts the output from rpm -qp --xml to a set of variable values'''
    import xml.etree.ElementTree as ElementTree
    rpmtag_map = {'Name': 'PN',
                  'Version': 'PV',
                  'Summary': 'SUMMARY',
                  'Description': 'DESCRIPTION',
                  'License': 'LICENSE',
                  'Url': 'HOMEPAGE'}

    values = {}
    tree = ElementTree.parse(xmlfile)
    root = tree.getroot()
    for child in root:
        if child.tag == 'rpmTag':
            name = child.attrib.get('name', None)
            if name:
                varname = rpmtag_map.get(name, None)
                if varname:
                    values[varname] = child[0].text
    return values


def register_commands(subparsers):
    parser_create = subparsers.add_parser('create',
                                          help='Create a new recipe',
                                          description='Creates a new recipe from a source tree')
    parser_create.add_argument('source', help='Path or URL to source')
    parser_create.add_argument('-o', '--outfile', help='Specify filename for recipe to create')
    parser_create.add_argument('-m', '--machine', help='Make recipe machine-specific as opposed to architecture-specific', action='store_true')
    parser_create.add_argument('-x', '--extract-to', metavar='EXTRACTPATH', help='Assuming source is a URL, fetch it and extract it to the directory specified as %(metavar)s')
    parser_create.add_argument('-N', '--name', help='Name to use within recipe (PN)')
    parser_create.add_argument('-V', '--version', help='Version to use within recipe (PV)')
    parser_create.add_argument('-b', '--binary', help='Treat the source tree as something that should be installed verbatim (no compilation, same directory structure)', action='store_true')
    parser_create.add_argument('--also-native', help='Also add native variant (i.e. support building recipe for the build host as well as the target machine)', action='store_true')
    parser_create.add_argument('--src-subdir', help='Specify subdirectory within source tree to use', metavar='SUBDIR')
    parser_create.add_argument('-a', '--autorev', help='When fetching from a git repository, set SRCREV in the recipe to a floating revision instead of fixed', action="store_true")
    parser_create.set_defaults(func=create_recipe)