source: mainline/tools/config.py@ 8183b35

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 8183b35 was af7223b, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 6 years ago

Fix revision fetching in out of tree config.py
  • Property mode set to 100755
File size: 21.0 KB
Line 
1#!/usr/bin/env python
2#
3# Copyright (c) 2006 Ondrej Palkovsky
4# Copyright (c) 2009 Martin Decky
5# Copyright (c) 2010 Jiri Svoboda
6# All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11#
12# - Redistributions of source code must retain the above copyright
13# notice, this list of conditions and the following disclaimer.
14# - Redistributions in binary form must reproduce the above copyright
15# notice, this list of conditions and the following disclaimer in the
16# documentation and/or other materials provided with the distribution.
17# - The name of the author may not be used to endorse or promote products
18# derived from this software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30#
31
32"""
33HelenOS configuration system
34"""
35
36import sys
37import os
38import re
39import time
40import subprocess
41import xtui
42import random
43
44ARGPOS_RULES = 1
45ARGPOS_PRESETS_DIR = 2
46ARGPOS_CHOICE = 3
47ARGPOS_PRESET = 4
48
49RULES_FILE = sys.argv[ARGPOS_RULES]
50MAKEFILE = 'Makefile.config'
51MACROS = 'config.h'
52PRESETS_DIR = sys.argv[ARGPOS_PRESETS_DIR]
53
54class BinaryOp:
55 def __init__(self, operator, left, right):
56 assert operator in ('&', '|', '=', '!=')
57
58 self._operator = operator
59 self._left = left
60 self._right = right
61
62 def evaluate(self, config):
63 if self._operator == '&':
64 return self._left.evaluate(config) and \
65 self._right.evaluate(config)
66 if self._operator == '|':
67 return self._left.evaluate(config) or \
68 self._right.evaluate(config)
69
70 # '=' or '!='
71 if not self._left in config:
72 config_val = ''
73 else:
74 config_val = config[self._left]
75 if config_val == '*':
76 config_val = 'y'
77
78 if self._operator == '=':
79 return self._right == config_val
80 return self._right != config_val
81
82# Expression parser
83class CondParser:
84 TOKEN_EOE = 0
85 TOKEN_SPECIAL = 1
86 TOKEN_STRING = 2
87
88 def __init__(self, text):
89 self._text = text
90
91 def parse(self):
92 self._position = -1
93 self._next_char()
94 self._next_token()
95
96 res = self._parse_expr()
97 if self._token_type != self.TOKEN_EOE:
98 self._error("Expected end of expression")
99 return res
100
101 def _next_char(self):
102 self._position += 1
103 if self._position >= len(self._text):
104 self._char = None
105 else:
106 self._char = self._text[self._position]
107 self._is_special_char = self._char in \
108 ('&', '|', '=', '!', '(', ')')
109
110 def _error(self, msg):
111 raise RuntimeError("Error parsing expression: %s:\n%s\n%s^" %
112 (msg, self._text, " " * self._token_position))
113
114 def _next_token(self):
115 self._token_position = self._position
116
117 # End of expression
118 if self._char == None:
119 self._token = None
120 self._token_type = self.TOKEN_EOE
121 return
122
123 # '&', '|', '=', '!=', '(', ')'
124 if self._is_special_char:
125 self._token = self._char
126 self._next_char()
127 if self._token == '!':
128 if self._char != '=':
129 self._error("Expected '='")
130 self._token += self._char
131 self._next_char()
132 self._token_type = self.TOKEN_SPECIAL
133 return
134
135 # <var> or <val>
136 self._token = ''
137 self._token_type = self.TOKEN_STRING
138 while True:
139 self._token += self._char
140 self._next_char()
141 if self._is_special_char or self._char == None:
142 break
143
144 def _parse_expr(self):
145 """ <expr> ::= <or_expr> ('&' <or_expr>)* """
146
147 left = self._parse_or_expr()
148 while self._token == '&':
149 self._next_token()
150 left = BinaryOp('&', left, self._parse_or_expr())
151 return left
152
153 def _parse_or_expr(self):
154 """ <or_expr> ::= <factor> ('|' <factor>)* """
155
156 left = self._parse_factor()
157 while self._token == '|':
158 self._next_token()
159 left = BinaryOp('|', left, self._parse_factor())
160 return left
161
162 def _parse_factor(self):
163 """ <factor> ::= <var> <cond> | '(' <expr> ')' """
164
165 if self._token == '(':
166 self._next_token()
167 res = self._parse_expr()
168 if self._token != ')':
169 self._error("Expected ')'")
170 self._next_token()
171 return res
172
173 if self._token_type == self.TOKEN_STRING:
174 var = self._token
175 self._next_token()
176 return self._parse_cond(var)
177
178 self._error("Expected '(' or <var>")
179
180 def _parse_cond(self, var):
181 """ <cond> ::= '=' <val> | '!=' <val> """
182
183 if self._token not in ('=', '!='):
184 self._error("Expected '=' or '!='")
185
186 oper = self._token
187 self._next_token()
188
189 if self._token_type != self.TOKEN_STRING:
190 self._error("Expected <val>")
191
192 val = self._token
193 self._next_token()
194
195 return BinaryOp(oper, var, val)
196
197def read_config(fname, config):
198 "Read saved values from last configuration run or a preset file"
199
200 inf = open(fname, 'r')
201
202 for line in inf:
203 res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line)
204 if res:
205 config[res.group(1)] = res.group(2)
206
207 inf.close()
208
209def parse_rules(fname, rules):
210 "Parse rules file"
211
212 inf = open(fname, 'r')
213
214 name = ''
215 choices = []
216
217 for line in inf:
218
219 if line.startswith('!'):
220 # Ask a question
221 res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line)
222
223 if not res:
224 raise RuntimeError("Weird line: %s" % line)
225
226 cond = res.group(1)
227 if cond:
228 cond = CondParser(cond).parse()
229 varname = res.group(2)
230 vartype = res.group(3)
231
232 rules.append((varname, vartype, name, choices, cond))
233 name = ''
234 choices = []
235 continue
236
237 if line.startswith('@'):
238 # Add new line into the 'choices' array
239 res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line)
240
241 if not res:
242 raise RuntimeError("Bad line: %s" % line)
243
244 choices.append((res.group(2), res.group(3)))
245 continue
246
247 if line.startswith('%'):
248 # Name of the option
249 name = line[1:].strip()
250 continue
251
252 if line.startswith('#') or (line == '\n'):
253 # Comment or empty line
254 continue
255
256
257 raise RuntimeError("Unknown syntax: %s" % line)
258
259 inf.close()
260
261def yes_no(default):
262 "Return '*' if yes, ' ' if no"
263
264 if default == 'y':
265 return '*'
266
267 return ' '
268
269def subchoice(screen, name, choices, default):
270 "Return choice of choices"
271
272 maxkey = 0
273 for key, val in choices:
274 length = len(key)
275 if (length > maxkey):
276 maxkey = length
277
278 options = []
279 position = None
280 cnt = 0
281 for key, val in choices:
282 if (default) and (key == default):
283 position = cnt
284
285 options.append(" %-*s %s " % (maxkey, key, val))
286 cnt += 1
287
288 (button, value) = xtui.choice_window(screen, name, 'Choose value', options, position)
289
290 if button == 'cancel':
291 return None
292
293 return choices[value][0]
294
295## Infer and verify configuration values.
296#
297# Augment @a config with values that can be inferred, purge invalid ones
298# and verify that all variables have a value (previously specified or inferred).
299#
300# @param config Configuration to work on
301# @param rules Rules
302#
303# @return True if configuration is complete and valid, False
304# otherwise.
305#
306def infer_verify_choices(config, rules):
307 "Infer and verify configuration values."
308
309 for rule in rules:
310 varname, vartype, name, choices, cond = rule
311
312 if cond and not cond.evaluate(config):
313 continue
314
315 if not varname in config:
316 value = None
317 else:
318 value = config[varname]
319
320 if not validate_rule_value(rule, value):
321 value = None
322
323 default = get_default_rule(rule)
324
325 #
326 # If we don't have a value but we do have
327 # a default, use it.
328 #
329 if value == None and default != None:
330 value = default
331 config[varname] = default
332
333 if not varname in config:
334 return False
335
336 return True
337
338## Fill the configuration with random (but valid) values.
339#
340# The random selection takes next rule and if the condition does
341# not violate existing configuration, random value of the variable
342# is selected.
343# This happens recursively as long as there are more rules.
344# If a conflict is found, we backtrack and try other settings of the
345# variable or ignoring the variable altogether.
346#
347# @param config Configuration to work on
348# @param rules Rules
349# @param start_index With which rule to start (initial call must specify 0 here).
350# @return True if able to find a valid configuration
351def random_choices(config, rules, start_index):
352 "Fill the configuration with random (but valid) values."
353 if start_index >= len(rules):
354 return True
355
356 varname, vartype, name, choices, cond = rules[start_index]
357
358 # First check that this rule would make sense
359 if cond and not cond.evaluate(config):
360 return random_choices(config, rules, start_index + 1)
361
362 # Remember previous choices for backtracking
363 yes_no = 0
364 choices_indexes = range(0, len(choices))
365 random.shuffle(choices_indexes)
366
367 # Remember current configuration value
368 old_value = None
369 try:
370 old_value = config[varname]
371 except KeyError:
372 old_value = None
373
374 # For yes/no choices, we ran the loop at most 2 times, for select
375 # choices as many times as there are options.
376 try_counter = 0
377 while True:
378 if vartype == 'choice':
379 if try_counter >= len(choices_indexes):
380 break
381 value = choices[choices_indexes[try_counter]][0]
382 elif vartype == 'y' or vartype == 'n':
383 if try_counter > 0:
384 break
385 value = vartype
386 elif vartype == 'y/n' or vartype == 'n/y':
387 if try_counter == 0:
388 yes_no = random.randint(0, 1)
389 elif try_counter == 1:
390 yes_no = 1 - yes_no
391 else:
392 break
393 if yes_no == 0:
394 value = 'n'
395 else:
396 value = 'y'
397 else:
398 raise RuntimeError("Unknown variable type: %s" % vartype)
399
400 config[varname] = value
401
402 ok = random_choices(config, rules, start_index + 1)
403 if ok:
404 return True
405
406 try_counter = try_counter + 1
407
408 # Restore the old value and backtrack
409 # (need to delete to prevent "ghost" variables that do not exist under
410 # certain configurations)
411 config[varname] = old_value
412 if old_value is None:
413 del config[varname]
414
415 return random_choices(config, rules, start_index + 1)
416
417
418## Get default value from a rule.
419def get_default_rule(rule):
420 varname, vartype, name, choices, cond = rule
421
422 default = None
423
424 if vartype == 'choice':
425 # If there is just one option, use it
426 if len(choices) == 1:
427 default = choices[0][0]
428 elif vartype == 'y':
429 default = '*'
430 elif vartype == 'n':
431 default = 'n'
432 elif vartype == 'y/n':
433 default = 'y'
434 elif vartype == 'n/y':
435 default = 'n'
436 else:
437 raise RuntimeError("Unknown variable type: %s" % vartype)
438
439 return default
440
441## Get option from a rule.
442#
443# @param rule Rule for a variable
444# @param value Current value of the variable
445#
446# @return Option (string) to ask or None which means not to ask.
447#
448def get_rule_option(rule, value):
449 varname, vartype, name, choices, cond = rule
450
451 option = None
452
453 if vartype == 'choice':
454 # If there is just one option, don't ask
455 if len(choices) != 1:
456 if (value == None):
457 option = "? %s --> " % name
458 else:
459 option = " %s [%s] --> " % (name, value)
460 elif vartype == 'y':
461 pass
462 elif vartype == 'n':
463 pass
464 elif vartype == 'y/n':
465 option = " <%s> %s " % (yes_no(value), name)
466 elif vartype == 'n/y':
467 option =" <%s> %s " % (yes_no(value), name)
468 else:
469 raise RuntimeError("Unknown variable type: %s" % vartype)
470
471 return option
472
473## Check if variable value is valid.
474#
475# @param rule Rule for the variable
476# @param value Value of the variable
477#
478# @return True if valid, False if not valid.
479#
480def validate_rule_value(rule, value):
481 varname, vartype, name, choices, cond = rule
482
483 if value == None:
484 return True
485
486 if vartype == 'choice':
487 if not value in [choice[0] for choice in choices]:
488 return False
489 elif vartype == 'y':
490 if value != 'y':
491 return False
492 elif vartype == 'n':
493 if value != 'n':
494 return False
495 elif vartype == 'y/n':
496 if not value in ['y', 'n']:
497 return False
498 elif vartype == 'n/y':
499 if not value in ['y', 'n']:
500 return False
501 else:
502 raise RuntimeError("Unknown variable type: %s" % vartype)
503
504 return True
505
506def preprocess_config(config, rules):
507 "Preprocess configuration"
508
509 varname_mode = 'CONFIG_BFB_MODE'
510 varname_width = 'CONFIG_BFB_WIDTH'
511 varname_height = 'CONFIG_BFB_HEIGHT'
512
513 if varname_mode in config:
514 mode = config[varname_mode].partition('x')
515
516 config[varname_width] = mode[0]
517 rules.append((varname_width, 'choice', 'Default framebuffer width', None, None))
518
519 config[varname_height] = mode[2]
520 rules.append((varname_height, 'choice', 'Default framebuffer height', None, None))
521
522def create_output(mkname, mcname, config, rules):
523 "Create output configuration"
524
525 varname_strip = 'CONFIG_STRIP_REVISION_INFO'
526 strip_rev_info = (varname_strip in config) and (config[varname_strip] == 'y')
527
528 if strip_rev_info:
529 timestamp_unix = int(0)
530 else:
531 # TODO: Use commit timestamp instead of build time.
532 timestamp_unix = int(time.time())
533
534 timestamp = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(timestamp_unix))
535
536 sys.stderr.write("Fetching current revision identifier ... ")
537
538 try:
539 version = subprocess.Popen(['git', '-C', os.path.dirname(RULES_FILE), 'log', '-1', '--pretty=%h'], stdout = subprocess.PIPE).communicate()[0].decode().strip()
540 sys.stderr.write("ok\n")
541 except:
542 version = None
543 sys.stderr.write("failed\n")
544
545 if (not strip_rev_info) and (version is not None):
546 revision = version
547 else:
548 revision = None
549
550 outmk = open(mkname, 'w')
551 outmc = open(mcname, 'w')
552
553 outmk.write('#########################################\n')
554 outmk.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n')
555 outmk.write('## Generated by: tools/config.py ##\n')
556 outmk.write('#########################################\n\n')
557
558 outmc.write('/***************************************\n')
559 outmc.write(' * AUTO-GENERATED FILE, DO NOT EDIT!!! *\n')
560 outmc.write(' * Generated by: tools/config.py *\n')
561 outmc.write(' ***************************************/\n\n')
562
563 defs = 'CONFIG_DEFS ='
564
565 for varname, vartype, name, choices, cond in rules:
566 if cond and not cond.evaluate(config):
567 continue
568
569 if not varname in config:
570 value = ''
571 else:
572 value = config[varname]
573 if (value == '*'):
574 value = 'y'
575
576 outmk.write('# %s\n%s = %s\n\n' % (name, varname, value))
577
578 if vartype in ["y", "n", "y/n", "n/y"]:
579 if value == "y":
580 outmc.write('/* %s */\n#define %s\n\n' % (name, varname))
581 defs += ' -D%s' % varname
582 else:
583 outmc.write('/* %s */\n#define %s %s\n#define %s_%s\n\n' % (name, varname, value, varname, value))
584 defs += ' -D%s=%s -D%s_%s' % (varname, value, varname, value)
585
586 if revision is not None:
587 outmk.write('REVISION = %s\n' % revision)
588 outmc.write('#define REVISION %s\n' % revision)
589 defs += ' "-DREVISION=%s"' % revision
590
591 outmk.write('TIMESTAMP_UNIX = %d\n' % timestamp_unix)
592 outmc.write('#define TIMESTAMP_UNIX %d\n' % timestamp_unix)
593 defs += ' "-DTIMESTAMP_UNIX=%d"' % timestamp_unix
594
595 outmk.write('TIMESTAMP = %s\n' % timestamp)
596 outmc.write('#define TIMESTAMP %s\n' % timestamp)
597 defs += ' "-DTIMESTAMP=%s"' % timestamp
598
599 outmk.write('%s\n' % defs)
600
601 outmk.close()
602 outmc.close()
603
604def sorted_dir(root):
605 list = os.listdir(root)
606 list.sort()
607 return list
608
609## Ask user to choose a configuration profile.
610#
611def choose_profile(root, fname, screen, config):
612 options = []
613 opt2path = {}
614 cnt = 0
615
616 # Look for profiles
617 for name in sorted_dir(root):
618 path = os.path.join(root, name)
619 canon = os.path.join(path, fname)
620
621 if os.path.isdir(path) and os.path.exists(canon) and os.path.isfile(canon):
622 subprofile = False
623
624 # Look for subprofiles
625 for subname in sorted_dir(path):
626 subpath = os.path.join(path, subname)
627 subcanon = os.path.join(subpath, fname)
628
629 if os.path.isdir(subpath) and os.path.exists(subcanon) and os.path.isfile(subcanon):
630 subprofile = True
631 options.append("%s (%s)" % (name, subname))
632 opt2path[cnt] = [name, subname]
633 cnt += 1
634
635 if not subprofile:
636 options.append(name)
637 opt2path[cnt] = [name]
638 cnt += 1
639
640 (button, value) = xtui.choice_window(screen, 'Load preconfigured defaults', 'Choose configuration profile', options, None)
641
642 if button == 'cancel':
643 return None
644
645 return opt2path[value]
646
647## Read presets from a configuration profile.
648#
649# @param profile Profile to load from (a list of string components)
650# @param config Output configuration
651#
652def read_presets(profile, config):
653 path = os.path.join(PRESETS_DIR, profile[0], MAKEFILE)
654 read_config(path, config)
655
656 if len(profile) > 1:
657 path = os.path.join(PRESETS_DIR, profile[0], profile[1], MAKEFILE)
658 read_config(path, config)
659
660## Parse profile name (relative OS path) into a list of components.
661#
662# @param profile_name Relative path (using OS separator)
663# @return List of components
664#
665def parse_profile_name(profile_name):
666 profile = []
667
668 head, tail = os.path.split(profile_name)
669 if head != '':
670 profile.append(head)
671
672 profile.append(tail)
673 return profile
674
675def main():
676 profile = None
677 config = {}
678 rules = []
679
680 # Parse rules file
681 parse_rules(RULES_FILE, rules)
682
683 if len(sys.argv) > ARGPOS_CHOICE:
684 choice = sys.argv[ARGPOS_CHOICE]
685 else:
686 choice = None
687
688 if len(sys.argv) > ARGPOS_PRESET:
689 preset = sys.argv[ARGPOS_PRESET]
690 else:
691 preset = None
692
693 # Input configuration file can be specified on command line
694 # otherwise configuration from previous run is used.
695 if preset is not None:
696 profile = parse_profile_name(preset)
697 read_presets(profile, config)
698 elif os.path.exists(MAKEFILE):
699 read_config(MAKEFILE, config)
700
701 # Default mode: check values and regenerate configuration files
702 if choice == 'default':
703 if (infer_verify_choices(config, rules)):
704 preprocess_config(config, rules)
705 create_output(MAKEFILE, MACROS, config, rules)
706 return 0
707
708 # Hands-off mode: check values and regenerate configuration files,
709 # but no interactive fallback
710 if choice == 'hands-off':
711 # We deliberately test this because we do not want
712 # to read implicitly any possible previous run configuration
713 if preset is None:
714 sys.stderr.write("Configuration error: No presets specified\n")
715 return 2
716
717 if (infer_verify_choices(config, rules)):
718 preprocess_config(config, rules)
719 create_output(MAKEFILE, MACROS, config, rules)
720 return 0
721
722 sys.stderr.write("Configuration error: The presets are ambiguous\n")
723 return 1
724
725 # Check mode: only check configuration
726 if choice == 'check':
727 if infer_verify_choices(config, rules):
728 return 0
729 return 1
730
731 # Random mode
732 if choice == 'random':
733 ok = random_choices(config, rules, 0)
734 if not ok:
735 sys.stderr.write("Internal error: unable to generate random config.\n")
736 return 2
737 if not infer_verify_choices(config, rules):
738 sys.stderr.write("Internal error: random configuration not consistent.\n")
739 return 2
740 preprocess_config(config, rules)
741 create_output(MAKEFILE, MACROS, config, rules)
742
743 return 0
744
745 screen = xtui.screen_init()
746 try:
747 selname = None
748 position = None
749 while True:
750
751 # Cancel out all values which have to be deduced
752 for varname, vartype, name, choices, cond in rules:
753 if (vartype == 'y') and (varname in config) and (config[varname] == '*'):
754 config[varname] = None
755
756 options = []
757 opt2row = {}
758 cnt = 1
759
760 options.append(" --- Load preconfigured defaults ... ")
761
762 for rule in rules:
763 varname, vartype, name, choices, cond = rule
764
765 if cond and not cond.evaluate(config):
766 continue
767
768 if varname == selname:
769 position = cnt
770
771 if not varname in config:
772 value = None
773 else:
774 value = config[varname]
775
776 if not validate_rule_value(rule, value):
777 value = None
778
779 default = get_default_rule(rule)
780
781 #
782 # If we don't have a value but we do have
783 # a default, use it.
784 #
785 if value == None and default != None:
786 value = default
787 config[varname] = default
788
789 option = get_rule_option(rule, value)
790 if option != None:
791 options.append(option)
792 else:
793 continue
794
795 opt2row[cnt] = (varname, vartype, name, choices)
796
797 cnt += 1
798
799 if (position != None) and (position >= len(options)):
800 position = None
801
802 (button, value) = xtui.choice_window(screen, 'HelenOS configuration', 'Choose configuration option', options, position)
803
804 if button == 'cancel':
805 return 'Configuration canceled'
806
807 if button == 'done':
808 if (infer_verify_choices(config, rules)):
809 break
810 else:
811 xtui.error_dialog(screen, 'Error', 'Some options have still undefined values. These options are marked with the "?" sign.')
812 continue
813
814 if value == 0:
815 profile = choose_profile(PRESETS_DIR, MAKEFILE, screen, config)
816 if profile != None:
817 read_presets(profile, config)
818 position = 1
819 continue
820
821 position = None
822 if not value in opt2row:
823 raise RuntimeError("Error selecting value: %s" % value)
824
825 (selname, seltype, name, choices) = opt2row[value]
826
827 if not selname in config:
828 value = None
829 else:
830 value = config[selname]
831
832 if seltype == 'choice':
833 config[selname] = subchoice(screen, name, choices, value)
834 elif (seltype == 'y/n') or (seltype == 'n/y'):
835 if config[selname] == 'y':
836 config[selname] = 'n'
837 else:
838 config[selname] = 'y'
839 finally:
840 xtui.screen_done(screen)
841
842 preprocess_config(config, rules)
843 create_output(MAKEFILE, MACROS, config, rules)
844 return 0
845
846if __name__ == '__main__':
847 sys.exit(main())
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