summaryrefslogtreecommitdiffstats
path: root/scripts/lib/recipetool/create_buildsys.py
blob: 0ad748ef02b94a5d1b27728bdf981b09f671c051 (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
# Recipe creation tool - create command build system handlers
#
# 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 re
import logging
import glob
from recipetool.create import RecipeHandler, validate_pv

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 CmakeRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'buildsystem' in handled:
            return False

        if RecipeHandler.checkfiles(srctree, ['CMakeLists.txt']):
            classes.append('cmake')
            values = CmakeRecipeHandler.extract_cmake_deps(lines_before, srctree, extravalues)
            classes.extend(values.pop('inherit', '').split())
            for var, value in values.items():
                lines_before.append('%s = "%s"' % (var, value))
            lines_after.append('# Specify any options you want to pass to cmake using EXTRA_OECMAKE:')
            lines_after.append('EXTRA_OECMAKE = ""')
            lines_after.append('')
            handled.append('buildsystem')
            return True
        return False

    @staticmethod
    def extract_cmake_deps(outlines, srctree, extravalues, cmakelistsfile=None):
        # Find all plugins that want to register handlers
        logger.debug('Loading cmake handlers')
        handlers = []
        for plugin in plugins:
            if hasattr(plugin, 'register_cmake_handlers'):
                plugin.register_cmake_handlers(handlers)

        values = {}
        inherits = []

        if cmakelistsfile:
            srcfiles = [cmakelistsfile]
        else:
            srcfiles = RecipeHandler.checkfiles(srctree, ['CMakeLists.txt'])

        # Note that some of these are non-standard, but probably better to
        # be able to map them anyway if we see them
        cmake_pkgmap = {'alsa': 'alsa-lib',
                        'aspell': 'aspell',
                        'atk': 'atk',
                        'bison': 'bison-native',
                        'boost': 'boost',
                        'bzip2': 'bzip2',
                        'cairo': 'cairo',
                        'cups': 'cups',
                        'curl': 'curl',
                        'curses': 'ncurses',
                        'cvs': 'cvs',
                        'drm': 'libdrm',
                        'dbus': 'dbus',
                        'dbusglib': 'dbus-glib',
                        'egl': 'virtual/egl',
                        'expat': 'expat',
                        'flex': 'flex-native',
                        'fontconfig': 'fontconfig',
                        'freetype': 'freetype',
                        'gettext': '',
                        'git': '',
                        'gio': 'glib-2.0',
                        'giounix': 'glib-2.0',
                        'glew': 'glew',
                        'glib': 'glib-2.0',
                        'glib2': 'glib-2.0',
                        'glu': 'libglu',
                        'glut': 'freeglut',
                        'gobject': 'glib-2.0',
                        'gperf': 'gperf-native',
                        'gnutls': 'gnutls',
                        'gtk2': 'gtk+',
                        'gtk3': 'gtk+3',
                        'gtk': 'gtk+3',
                        'harfbuzz': 'harfbuzz',
                        'icu': 'icu',
                        'intl': 'virtual/libintl',
                        'jpeg': 'jpeg',
                        'libarchive': 'libarchive',
                        'libiconv': 'virtual/libiconv',
                        'liblzma': 'xz',
                        'libxml2': 'libxml2',
                        'libxslt': 'libxslt',
                        'opengl': 'virtual/libgl',
                        'openmp': '',
                        'openssl': 'openssl',
                        'pango': 'pango',
                        'perl': '',
                        'perllibs': '',
                        'pkgconfig': '',
                        'png': 'libpng',
                        'pthread': '',
                        'pythoninterp': '',
                        'pythonlibs': '',
                        'ruby': 'ruby-native',
                        'sdl': 'libsdl',
                        'sdl2': 'libsdl2',
                        'subversion': 'subversion-native',
                        'swig': 'swig-native',
                        'tcl': 'tcl-native',
                        'threads': '',
                        'tiff': 'tiff',
                        'wget': 'wget',
                        'x11': 'libx11',
                        'xcb': 'libxcb',
                        'xext': 'libxext',
                        'xfixes': 'libxfixes',
                        'zlib': 'zlib',
                        }

        pcdeps = []
        libdeps = []
        deps = []
        unmappedpkgs = []

        proj_re = re.compile('project\s*\(([^)]*)\)', re.IGNORECASE)
        pkgcm_re = re.compile('pkg_check_modules\s*\(\s*[a-zA-Z0-9-_]+\s*(REQUIRED)?\s+([^)\s]+)\s*\)', re.IGNORECASE)
        pkgsm_re = re.compile('pkg_search_module\s*\(\s*[a-zA-Z0-9-_]+\s*(REQUIRED)?((\s+[^)\s]+)+)\s*\)', re.IGNORECASE)
        findpackage_re = re.compile('find_package\s*\(\s*([a-zA-Z0-9-_]+)\s*.*', re.IGNORECASE)
        findlibrary_re = re.compile('find_library\s*\(\s*[a-zA-Z0-9-_]+\s*(NAMES\s+)?([a-zA-Z0-9-_ ]+)\s*.*')
        checklib_re = re.compile('check_library_exists\s*\(\s*([^\s)]+)\s*.*', re.IGNORECASE)
        include_re = re.compile('include\s*\(\s*([^)\s]*)\s*\)', re.IGNORECASE)
        subdir_re = re.compile('add_subdirectory\s*\(\s*([^)\s]*)\s*([^)\s]*)\s*\)', re.IGNORECASE)
        dep_re = re.compile('([^ ><=]+)( *[<>=]+ *[^ ><=]+)?')

        def find_cmake_package(pkg):
            RecipeHandler.load_devel_filemap(tinfoil.config_data)
            for fn, pn in RecipeHandler.recipecmakefilemap.items():
                splitname = fn.split('/')
                if len(splitname) > 1:
                    if splitname[0].lower().startswith(pkg.lower()):
                        if splitname[1] == '%s-config.cmake' % pkg.lower() or splitname[1] == '%sConfig.cmake' % pkg or splitname[1] == 'Find%s.cmake' % pkg:
                            return pn
            return None

        def interpret_value(value):
            return value.strip('"')

        def parse_cmake_file(fn, paths=None):
            searchpaths = (paths or []) + [os.path.dirname(fn)]
            logger.debug('Parsing file %s' % fn)
            with open(fn, 'r', errors='surrogateescape') as f:
                for line in f:
                    line = line.strip()
                    for handler in handlers:
                        if handler.process_line(srctree, fn, line, libdeps, pcdeps, deps, outlines, inherits, values):
                            continue
                    res = include_re.match(line)
                    if res:
                        includefn = bb.utils.which(':'.join(searchpaths), res.group(1))
                        if includefn:
                            parse_cmake_file(includefn, searchpaths)
                        else:
                            logger.debug('Unable to recurse into include file %s' % res.group(1))
                        continue
                    res = subdir_re.match(line)
                    if res:
                        subdirfn = os.path.join(os.path.dirname(fn), res.group(1), 'CMakeLists.txt')
                        if os.path.exists(subdirfn):
                            parse_cmake_file(subdirfn, searchpaths)
                        else:
                            logger.debug('Unable to recurse into subdirectory file %s' % subdirfn)
                        continue
                    res = proj_re.match(line)
                    if res:
                        extravalues['PN'] = interpret_value(res.group(1).split()[0])
                        continue
                    res = pkgcm_re.match(line)
                    if res:
                        res = dep_re.findall(res.group(2))
                        if res:
                            pcdeps.extend([interpret_value(x[0]) for x in res])
                        inherits.append('pkgconfig')
                        continue
                    res = pkgsm_re.match(line)
                    if res:
                        res = dep_re.findall(res.group(2))
                        if res:
                            # Note: appending a tuple here!
                            item = tuple((interpret_value(x[0]) for x in res))
                            if len(item) == 1:
                                item = item[0]
                            pcdeps.append(item)
                        inherits.append('pkgconfig')
                        continue
                    res = findpackage_re.match(line)
                    if res:
                        origpkg = res.group(1)
                        pkg = interpret_value(origpkg)
                        found = False
                        for handler in handlers:
                            if handler.process_findpackage(srctree, fn, pkg, deps, outlines, inherits, values):
                                logger.debug('Mapped CMake package %s via handler %s' % (pkg, handler.__class__.__name__))
                                found = True
                                break
                        if found:
                            continue
                        elif pkg == 'Gettext':
                            inherits.append('gettext')
                        elif pkg == 'Perl':
                            inherits.append('perlnative')
                        elif pkg == 'PkgConfig':
                            inherits.append('pkgconfig')
                        elif pkg == 'PythonInterp':
                            inherits.append('pythonnative')
                        elif pkg == 'PythonLibs':
                            inherits.append('python-dir')
                        else:
                            # Try to map via looking at installed CMake packages in pkgdata
                            dep = find_cmake_package(pkg)
                            if dep:
                                logger.debug('Mapped CMake package %s to recipe %s via pkgdata' % (pkg, dep))
                                deps.append(dep)
                            else:
                                dep = cmake_pkgmap.get(pkg.lower(), None)
                                if dep:
                                    logger.debug('Mapped CMake package %s to recipe %s via internal list' % (pkg, dep))
                                    deps.append(dep)
                                elif dep is None:
                                    unmappedpkgs.append(origpkg)
                        continue
                    res = checklib_re.match(line)
                    if res:
                        lib = interpret_value(res.group(1))
                        if not lib.startswith('$'):
                            libdeps.append(lib)
                    res = findlibrary_re.match(line)
                    if res:
                        libs = res.group(2).split()
                        for lib in libs:
                            if lib in ['HINTS', 'PATHS', 'PATH_SUFFIXES', 'DOC', 'NAMES_PER_DIR'] or lib.startswith(('NO_', 'CMAKE_', 'ONLY_CMAKE_')):
                                break
                            lib = interpret_value(lib)
                            if not lib.startswith('$'):
                                libdeps.append(lib)
                    if line.lower().startswith('useswig'):
                        deps.append('swig-native')
                        continue

        parse_cmake_file(srcfiles[0])

        if unmappedpkgs:
            outlines.append('# NOTE: unable to map the following CMake package dependencies: %s' % ' '.join(list(set(unmappedpkgs))))

        RecipeHandler.handle_depends(libdeps, pcdeps, deps, outlines, values, tinfoil.config_data)

        for handler in handlers:
            handler.post_process(srctree, libdeps, pcdeps, deps, outlines, inherits, values)

        if inherits:
            values['inherit'] = ' '.join(list(set(inherits)))

        return values


class CmakeExtensionHandler(object):
    '''Base class for CMake extension handlers'''
    def process_line(self, srctree, fn, line, libdeps, pcdeps, deps, outlines, inherits, values):
        '''
        Handle a line parsed out of an CMake file.
        Return True if you've completely handled the passed in line, otherwise return False.
        '''
        return False

    def process_findpackage(self, srctree, fn, pkg, deps, outlines, inherits, values):
        '''
        Handle a find_package package parsed out of a CMake file.
        Return True if you've completely handled the passed in package, otherwise return False.
        '''
        return False

    def post_process(self, srctree, fn, pkg, deps, outlines, inherits, values):
        '''
        Apply any desired post-processing on the output
        '''
        return



class SconsRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'buildsystem' in handled:
            return False

        if RecipeHandler.checkfiles(srctree, ['SConstruct', 'Sconstruct', 'sconstruct']):
            classes.append('scons')
            lines_after.append('# Specify any options you want to pass to scons using EXTRA_OESCONS:')
            lines_after.append('EXTRA_OESCONS = ""')
            lines_after.append('')
            handled.append('buildsystem')
            return True
        return False


class QmakeRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'buildsystem' in handled:
            return False

        if RecipeHandler.checkfiles(srctree, ['*.pro']):
            classes.append('qmake2')
            handled.append('buildsystem')
            return True
        return False


class AutotoolsRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'buildsystem' in handled:
            return False

        autoconf = False
        if RecipeHandler.checkfiles(srctree, ['configure.ac', 'configure.in']):
            autoconf = True
            values = AutotoolsRecipeHandler.extract_autotools_deps(lines_before, srctree, extravalues)
            classes.extend(values.pop('inherit', '').split())
            for var, value in values.items():
                lines_before.append('%s = "%s"' % (var, value))
        else:
            conffile = RecipeHandler.checkfiles(srctree, ['configure'])
            if conffile:
                # Check if this is just a pre-generated autoconf configure script
                with open(conffile[0], 'r', errors='surrogateescape') as f:
                    for i in range(1, 10):
                        if 'Generated by GNU Autoconf' in f.readline():
                            autoconf = True
                            break

        if autoconf and not ('PV' in extravalues and 'PN' in extravalues):
            # Last resort
            conffile = RecipeHandler.checkfiles(srctree, ['configure'])
            if conffile:
                with open(conffile[0], 'r', errors='surrogateescape') as f:
                    for line in f:
                        line = line.strip()
                        if line.startswith('VERSION=') or line.startswith('PACKAGE_VERSION='):
                            pv = line.split('=')[1].strip('"\'')
                            if pv and not 'PV' in extravalues and validate_pv(pv):
                                extravalues['PV'] = pv
                        elif line.startswith('PACKAGE_NAME=') or line.startswith('PACKAGE='):
                            pn = line.split('=')[1].strip('"\'')
                            if pn and not 'PN' in extravalues:
                                extravalues['PN'] = pn

        if autoconf:
            lines_before.append('')
            lines_before.append('# NOTE: if this software is not capable of being built in a separate build directory')
            lines_before.append('# from the source, you should replace autotools with autotools-brokensep in the')
            lines_before.append('# inherit line')
            classes.append('autotools')
            lines_after.append('# Specify any options you want to pass to the configure script using EXTRA_OECONF:')
            lines_after.append('EXTRA_OECONF = ""')
            lines_after.append('')
            handled.append('buildsystem')
            return True

        return False

    @staticmethod
    def extract_autotools_deps(outlines, srctree, extravalues=None, acfile=None):
        import shlex

        # Find all plugins that want to register handlers
        logger.debug('Loading autotools handlers')
        handlers = []
        for plugin in plugins:
            if hasattr(plugin, 'register_autotools_handlers'):
                plugin.register_autotools_handlers(handlers)

        values = {}
        inherits = []

        # Hardcoded map, we also use a dynamic one based on what's in the sysroot
        progmap = {'flex': 'flex-native',
                'bison': 'bison-native',
                'm4': 'm4-native',
                'tar': 'tar-native',
                'ar': 'binutils-native',
                'ranlib': 'binutils-native',
                'ld': 'binutils-native',
                'strip': 'binutils-native',
                'libtool': '',
                'autoconf': '',
                'autoheader': '',
                'automake': '',
                'uname': '',
                'rm': '',
                'cp': '',
                'mv': '',
                'find': '',
                'awk': '',
                'sed': '',
                }
        progclassmap = {'gconftool-2': 'gconf',
                'pkg-config': 'pkgconfig',
                'python': 'pythonnative',
                'python3': 'python3native',
                'perl': 'perlnative',
                'makeinfo': 'texinfo',
                }

        pkg_re = re.compile('PKG_CHECK_MODULES\(\s*\[?[a-zA-Z0-9_]*\]?,\s*\[?([^,\]]*)\]?[),].*')
        pkgce_re = re.compile('PKG_CHECK_EXISTS\(\s*\[?([^,\]]*)\]?[),].*')
        lib_re = re.compile('AC_CHECK_LIB\(\s*\[?([^,\]]*)\]?,.*')
        libx_re = re.compile('AX_CHECK_LIBRARY\(\s*\[?[^,\]]*\]?,\s*\[?([^,\]]*)\]?,\s*\[?([a-zA-Z0-9-]*)\]?,.*')
        progs_re = re.compile('_PROGS?\(\s*\[?[a-zA-Z0-9_]*\]?,\s*\[?([^,\]]*)\]?[),].*')
        dep_re = re.compile('([^ ><=]+)( [<>=]+ [^ ><=]+)?')
        ac_init_re = re.compile('AC_INIT\(\s*([^,]+),\s*([^,]+)[,)].*')
        am_init_re = re.compile('AM_INIT_AUTOMAKE\(\s*([^,]+),\s*([^,]+)[,)].*')
        define_re = re.compile('\s*(m4_)?define\(\s*([^,]+),\s*([^,]+)\)')

        defines = {}
        def subst_defines(value):
            newvalue = value
            for define, defval in defines.items():
                newvalue = newvalue.replace(define, defval)
            if newvalue != value:
                return subst_defines(newvalue)
            return value

        def process_value(value):
            value = value.replace('[', '').replace(']', '')
            if value.startswith('m4_esyscmd(') or value.startswith('m4_esyscmd_s('):
                cmd = subst_defines(value[value.index('(')+1:-1])
                try:
                    if '|' in cmd:
                        cmd = 'set -o pipefail; ' + cmd
                    stdout, _ = bb.process.run(cmd, cwd=srctree, shell=True)
                    ret = stdout.rstrip()
                except bb.process.ExecutionError as e:
                    ret = ''
            elif value.startswith('m4_'):
                return None
            ret = subst_defines(value)
            if ret:
                ret = ret.strip('"\'')
            return ret

        # Since a configure.ac file is essentially a program, this is only ever going to be
        # a hack unfortunately; but it ought to be enough of an approximation
        if acfile:
            srcfiles = [acfile]
        else:
            srcfiles = RecipeHandler.checkfiles(srctree, ['acinclude.m4', 'configure.ac', 'configure.in'])

        pcdeps = []
        libdeps = []
        deps = []
        unmapped = []

        RecipeHandler.load_binmap(tinfoil.config_data)

        def process_macro(keyword, value):
            for handler in handlers:
                if handler.process_macro(srctree, keyword, value, process_value, libdeps, pcdeps, deps, outlines, inherits, values):
                    return
            if keyword == 'PKG_CHECK_MODULES':
                res = pkg_re.search(value)
                if res:
                    res = dep_re.findall(res.group(1))
                    if res:
                        pcdeps.extend([x[0] for x in res])
                inherits.append('pkgconfig')
            elif keyword == 'PKG_CHECK_EXISTS':
                res = pkgce_re.search(value)
                if res:
                    res = dep_re.findall(res.group(1))
                    if res:
                        pcdeps.extend([x[0] for x in res])
                inherits.append('pkgconfig')
            elif keyword in ('AM_GNU_GETTEXT', 'AM_GLIB_GNU_GETTEXT', 'GETTEXT_PACKAGE'):
                inherits.append('gettext')
            elif keyword in ('AC_PROG_INTLTOOL', 'IT_PROG_INTLTOOL'):
                deps.append('intltool-native')
            elif keyword == 'AM_PATH_GLIB_2_0':
                deps.append('glib-2.0')
            elif keyword in ('AC_CHECK_PROG', 'AC_PATH_PROG', 'AX_WITH_PROG'):
                res = progs_re.search(value)
                if res:
                    for prog in shlex.split(res.group(1)):
                        prog = prog.split()[0]
                        for handler in handlers:
                            if handler.process_prog(srctree, keyword, value, prog, deps, outlines, inherits, values):
                                return
                        progclass = progclassmap.get(prog, None)
                        if progclass:
                            inherits.append(progclass)
                        else:
                            progdep = RecipeHandler.recipebinmap.get(prog, None)
                            if not progdep:
                                progdep = progmap.get(prog, None)
                            if progdep:
                                deps.append(progdep)
                            elif progdep is None:
                                if not prog.startswith('$'):
                                    unmapped.append(prog)
            elif keyword == 'AC_CHECK_LIB':
                res = lib_re.search(value)
                if res:
                    lib = res.group(1)
                    if not lib.startswith('$'):
                        libdeps.append(lib)
            elif keyword == 'AX_CHECK_LIBRARY':
                res = libx_re.search(value)
                if res:
                    lib = res.group(2)
                    if not lib.startswith('$'):
                        header = res.group(1)
                        libdeps.append((lib, header))
            elif keyword == 'AC_PATH_X':
                deps.append('libx11')
            elif keyword in ('AX_BOOST', 'BOOST_REQUIRE'):
                deps.append('boost')
            elif keyword in ('AC_PROG_LEX', 'AM_PROG_LEX', 'AX_PROG_FLEX'):
                deps.append('flex-native')
            elif keyword in ('AC_PROG_YACC', 'AX_PROG_BISON'):
                deps.append('bison-native')
            elif keyword == 'AX_CHECK_ZLIB':
                deps.append('zlib')
            elif keyword in ('AX_CHECK_OPENSSL', 'AX_LIB_CRYPTO'):
                deps.append('openssl')
            elif keyword == 'AX_LIB_CURL':
                deps.append('curl')
            elif keyword == 'AX_LIB_BEECRYPT':
                deps.append('beecrypt')
            elif keyword == 'AX_LIB_EXPAT':
                deps.append('expat')
            elif keyword == 'AX_LIB_GCRYPT':
                deps.append('libgcrypt')
            elif keyword == 'AX_LIB_NETTLE':
                deps.append('nettle')
            elif keyword == 'AX_LIB_READLINE':
                deps.append('readline')
            elif keyword == 'AX_LIB_SQLITE3':
                deps.append('sqlite3')
            elif keyword == 'AX_LIB_TAGLIB':
                deps.append('taglib')
            elif keyword == 'AX_PKG_SWIG':
                deps.append('swig-native')
            elif keyword == 'AX_PROG_XSLTPROC':
                deps.append('libxslt-native')
            elif keyword == 'AX_WITH_CURSES':
                deps.append('ncurses')
            elif keyword == 'AX_PATH_BDB':
                deps.append('db')
            elif keyword == 'AX_PATH_LIB_PCRE':
                deps.append('libpcre')
            elif keyword == 'AC_INIT':
                if extravalues is not None:
                    res = ac_init_re.match(value)
                    if res:
                        extravalues['PN'] = process_value(res.group(1))
                        pv = process_value(res.group(2))
                        if validate_pv(pv):
                            extravalues['PV'] = pv
            elif keyword == 'AM_INIT_AUTOMAKE':
                if extravalues is not None:
                    if 'PN' not in extravalues:
                        res = am_init_re.match(value)
                        if res:
                            if res.group(1) != 'AC_PACKAGE_NAME':
                                extravalues['PN'] = process_value(res.group(1))
                            pv = process_value(res.group(2))
                            if validate_pv(pv):
                                extravalues['PV'] = pv
            elif keyword == 'define(':
                res = define_re.match(value)
                if res:
                    key = res.group(2).strip('[]')
                    value = process_value(res.group(3))
                    if value is not None:
                        defines[key] = value

        keywords = ['PKG_CHECK_MODULES',
                    'PKG_CHECK_EXISTS',
                    'AM_GNU_GETTEXT',
                    'AM_GLIB_GNU_GETTEXT',
                    'GETTEXT_PACKAGE',
                    'AC_PROG_INTLTOOL',
                    'IT_PROG_INTLTOOL',
                    'AM_PATH_GLIB_2_0',
                    'AC_CHECK_PROG',
                    'AC_PATH_PROG',
                    'AX_WITH_PROG',
                    'AC_CHECK_LIB',
                    'AX_CHECK_LIBRARY',
                    'AC_PATH_X',
                    'AX_BOOST',
                    'BOOST_REQUIRE',
                    'AC_PROG_LEX',
                    'AM_PROG_LEX',
                    'AX_PROG_FLEX',
                    'AC_PROG_YACC',
                    'AX_PROG_BISON',
                    'AX_CHECK_ZLIB',
                    'AX_CHECK_OPENSSL',
                    'AX_LIB_CRYPTO',
                    'AX_LIB_CURL',
                    'AX_LIB_BEECRYPT',
                    'AX_LIB_EXPAT',
                    'AX_LIB_GCRYPT',
                    'AX_LIB_NETTLE',
                    'AX_LIB_READLINE'
                    'AX_LIB_SQLITE3',
                    'AX_LIB_TAGLIB',
                    'AX_PKG_SWIG',
                    'AX_PROG_XSLTPROC',
                    'AX_WITH_CURSES',
                    'AX_PATH_BDB',
                    'AX_PATH_LIB_PCRE',
                    'AC_INIT',
                    'AM_INIT_AUTOMAKE',
                    'define(',
                    ]

        for handler in handlers:
            handler.extend_keywords(keywords)

        for srcfile in srcfiles:
            nesting = 0
            in_keyword = ''
            partial = ''
            with open(srcfile, 'r', errors='surrogateescape') as f:
                for line in f:
                    if in_keyword:
                        partial += ' ' + line.strip()
                        if partial.endswith('\\'):
                            partial = partial[:-1]
                        nesting = nesting + line.count('(') - line.count(')')
                        if nesting == 0:
                            process_macro(in_keyword, partial)
                            partial = ''
                            in_keyword = ''
                    else:
                        for keyword in keywords:
                            if keyword in line:
                                nesting = line.count('(') - line.count(')')
                                if nesting > 0:
                                    partial = line.strip()
                                    if partial.endswith('\\'):
                                        partial = partial[:-1]
                                    in_keyword = keyword
                                else:
                                    process_macro(keyword, line.strip())
                                break

            if in_keyword:
                process_macro(in_keyword, partial)

        if extravalues:
            for k,v in list(extravalues.items()):
                if v:
                    if v.startswith('$') or v.startswith('@') or v.startswith('%'):
                        del extravalues[k]
                    else:
                        extravalues[k] = v.strip('"\'').rstrip('()')

        if unmapped:
            outlines.append('# NOTE: the following prog dependencies are unknown, ignoring: %s' % ' '.join(list(set(unmapped))))

        RecipeHandler.handle_depends(libdeps, pcdeps, deps, outlines, values, tinfoil.config_data)

        for handler in handlers:
            handler.post_process(srctree, libdeps, pcdeps, deps, outlines, inherits, values)

        if inherits:
            values['inherit'] = ' '.join(list(set(inherits)))

        return values


class AutotoolsExtensionHandler(object):
    '''Base class for Autotools extension handlers'''
    def process_macro(self, srctree, keyword, value, process_value, libdeps, pcdeps, deps, outlines, inherits, values):
        '''
        Handle a macro parsed out of an autotools file. Note that if you want this to be called
        for any macro other than the ones AutotoolsRecipeHandler already looks for, you'll need
        to add it to the keywords list in extend_keywords().
        Return True if you've completely handled the passed in macro, otherwise return False.
        '''
        return False

    def extend_keywords(self, keywords):
        '''Adds keywords to be recognised by the parser (so that you get a call to process_macro)'''
        return

    def process_prog(self, srctree, keyword, value, prog, deps, outlines, inherits, values):
        '''
        Handle an AC_PATH_PROG, AC_CHECK_PROG etc. line
        Return True if you've completely handled the passed in macro, otherwise return False.
        '''
        return False

    def post_process(self, srctree, fn, pkg, deps, outlines, inherits, values):
        '''
        Apply any desired post-processing on the output
        '''
        return


class MakefileRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'buildsystem' in handled:
            return False

        makefile = RecipeHandler.checkfiles(srctree, ['Makefile', 'makefile', 'GNUmakefile'])
        if makefile:
            lines_after.append('# NOTE: this is a Makefile-only piece of software, so we cannot generate much of the')
            lines_after.append('# recipe automatically - you will need to examine the Makefile yourself and ensure')
            lines_after.append('# that the appropriate arguments are passed in.')
            lines_after.append('')

            scanfile = os.path.join(srctree, 'configure.scan')
            skipscan = False
            try:
                stdout, stderr = bb.process.run('autoscan', cwd=srctree, shell=True)
            except bb.process.ExecutionError as e:
                skipscan = True
            if scanfile and os.path.exists(scanfile):
                values = AutotoolsRecipeHandler.extract_autotools_deps(lines_before, srctree, acfile=scanfile)
                classes.extend(values.pop('inherit', '').split())
                for var, value in values.items():
                    if var == 'DEPENDS':
                        lines_before.append('# NOTE: some of these dependencies may be optional, check the Makefile and/or upstream documentation')
                    lines_before.append('%s = "%s"' % (var, value))
                lines_before.append('')
                for f in ['configure.scan', 'autoscan.log']:
                    fp = os.path.join(srctree, f)
                    if os.path.exists(fp):
                        os.remove(fp)

            self.genfunction(lines_after, 'do_configure', ['# Specify any needed configure commands here'])

            func = []
            func.append('# You will almost certainly need to add additional arguments here')
            func.append('oe_runmake')
            self.genfunction(lines_after, 'do_compile', func)

            installtarget = True
            try:
                stdout, stderr = bb.process.run('make -n install', cwd=srctree, shell=True)
            except bb.process.ExecutionError as e:
                if e.exitcode != 1:
                    installtarget = False
            func = []
            if installtarget:
                func.append('# This is a guess; additional arguments may be required')
                makeargs = ''
                with open(makefile[0], 'r', errors='surrogateescape') as f:
                    for i in range(1, 100):
                        if 'DESTDIR' in f.readline():
                            makeargs += " 'DESTDIR=${D}'"
                            break
                func.append('oe_runmake install%s' % makeargs)
            else:
                func.append('# NOTE: unable to determine what to put here - there is a Makefile but no')
                func.append('# target named "install", so you will need to define this yourself')
            self.genfunction(lines_after, 'do_install', func)

            handled.append('buildsystem')
        else:
            lines_after.append('# NOTE: no Makefile found, unable to determine what needs to be done')
            lines_after.append('')
            self.genfunction(lines_after, 'do_configure', ['# Specify any needed configure commands here'])
            self.genfunction(lines_after, 'do_compile', ['# Specify compilation commands here'])
            self.genfunction(lines_after, 'do_install', ['# Specify install commands here'])


class VersionFileRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'PV' not in extravalues:
            # Look for a VERSION or version file containing a single line consisting
            # only of a version number
            filelist = RecipeHandler.checkfiles(srctree, ['VERSION', 'version'])
            version = None
            for fileitem in filelist:
                linecount = 0
                with open(fileitem, 'r', errors='surrogateescape') as f:
                    for line in f:
                        line = line.rstrip().strip('"\'')
                        linecount += 1
                        if line:
                            if linecount > 1:
                                version = None
                                break
                            else:
                                if validate_pv(line):
                                    version = line
                if version:
                    extravalues['PV'] = version
                    break


class SpecFileRecipeHandler(RecipeHandler):
    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
        if 'PV' in extravalues and 'PN' in extravalues:
            return
        filelist = RecipeHandler.checkfiles(srctree, ['*.spec'], recursive=True)
        valuemap = {'Name': 'PN',
                    'Version': 'PV',
                    'Summary': 'SUMMARY',
                    'Url': 'HOMEPAGE',
                    'License': 'LICENSE'}
        foundvalues = {}
        for fileitem in filelist:
            linecount = 0
            with open(fileitem, 'r', errors='surrogateescape') as f:
                for line in f:
                    for value, varname in valuemap.items():
                        if line.startswith(value + ':') and not varname in foundvalues:
                            foundvalues[varname] = line.split(':', 1)[1].strip()
                            break
                    if len(foundvalues) == len(valuemap):
                        break
        if 'PV' in foundvalues:
            if not validate_pv(foundvalues['PV']):
                del foundvalues['PV']
        license = foundvalues.pop('LICENSE', None)
        if license:
            liccomment = '# NOTE: spec file indicates the license may be "%s"' % license
            for i, line in enumerate(lines_before):
                if line.startswith('LICENSE ='):
                    lines_before.insert(i, liccomment)
                    break
            else:
                lines_before.append(liccomment)
        extravalues.update(foundvalues)

def register_recipe_handlers(handlers):
    # Set priorities with some gaps so that other plugins can insert
    # their own handlers (so avoid changing these numbers)
    handlers.append((CmakeRecipeHandler(), 50))
    handlers.append((AutotoolsRecipeHandler(), 40))
    handlers.append((SconsRecipeHandler(), 30))
    handlers.append((QmakeRecipeHandler(), 20))
    handlers.append((MakefileRecipeHandler(), 10))
    handlers.append((VersionFileRecipeHandler(), -1))
    handlers.append((SpecFileRecipeHandler(), -1))