forked from Perl/perl5
-
Notifications
You must be signed in to change notification settings - Fork 0
/
configpm
executable file
·1264 lines (1046 loc) · 32.5 KB
/
configpm
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
#!./miniperl -w
#
# configpm
#
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
# 2002, 2003, 2004, 2005, 2006, 2007 Larry Wall and others.
#
#
# Regenerate the files
#
# lib/Config.pm
# lib/Config_heavy.pl
# lib/Config.pod
#
#
# from the contents of the static files
#
# Porting/Glossary
# myconfig.SH
#
# and from the contents of the Configure-generated file
#
# config.sh
#
#
# It will only update Config.pm and Config_heavy.pl if the contents of
# either file would be different. Note that *both* files are updated in
# this case, since for example an extension makefile that has a dependency
# on Config.pm should trigger even if only Config_heavy.pl has changed.
sub usage { die <<EOF }
usage: $0 [ options ]
--no-glossary don't include Porting/Glossary in lib/Config.pod
--chdir=dir change directory before writing files
EOF
use strict;
our (%Config, $Config_SH_expanded);
my $how_many_common = 22;
# commonly used names to precache (and hence lookup fastest)
my %Common;
while ($how_many_common--) {
$_ = <DATA>;
chomp;
/^(\S+):\s*(\d+)$/ or die "Malformed line '$_'";
$Common{$1} = $1;
}
# Post 37589e1eefb1bd62 DynaLoader defaults to reading these at runtime.
# Ideally we're redo the data below, but Fotango's build system made it
# wonderfully easy to instrument, and no longer exists.
$Common{$_} = $_ foreach qw(dlext so);
# names of things which may need to have slashes changed to double-colons
my %Extensions = map {($_,$_)}
qw(dynamic_ext static_ext extensions known_extensions);
# The plan is that this information is used by ExtUtils::MakeMaker to generate
# Makefile dependencies, rather than hardcoding a list, which has become out
# of date. However, currently, MM_Unix.pm and MM_VMS.pm have *different* lists,
# *and* descrip_mms.template doesn't actually install all the headers.
# The "Unix" list seems to (attempt to) avoid the generated headers, which I'm
# not sure is the right thing to do. Also, not certain whether it would be
# easier to parse MANIFEST to get these (adding config.h, and potentially
# removing others), but for now, stick to a hard coded list.
# Could use a map to add ".h", but I suspect that it's easier to use literals,
# so that anyone using grep will find them
# This is the list from MM_VMS, plus pad.h, parser.h, utf8.h
# which it installs. It *doesn't* install perliol.h - FIXME.
my @header_files = qw(EXTERN.h INTERN.h XSUB.h av.h config.h cop.h cv.h
embed.h embedvar.h form.h gv.h handy.h hv.h hv_func.h intrpvar.h
iperlsys.h keywords.h mg.h nostdio.h op.h opcode.h
pad.h parser.h patchlevel.h perl.h perlio.h perlsdio.h
perlvars.h perly.h pp.h pp_proto.h proto.h
regcomp.h regexp.h regnodes.h scope.h sv.h thread.h utf8.h
util.h);
push @header_files,
$^O eq 'VMS' ? 'vmsish.h' : qw(dosish.h perliol.h time64.h unixish.h);
my $header_files = ' return qw(' . join(' ', sort @header_files) . ');';
$header_files =~ s/(?=.{64}) # If line is still overlength
(.{1,64})\ # Split at the last convenient space
/$1\n /gx;
# allowed opts as well as specifies default and initial values
my %Allowed_Opts = (
'glossary' => 1, # --no-glossary - no glossary file inclusion,
# for compactness
'chdir' => '', # --chdir=dir - change directory before writing files
);
sub opts {
# user specified options
my %given_opts = (
# --opt=smth
(map {/^--([\-_\w]+)=(.*)$/} @ARGV),
# --opt --no-opt --noopt
(map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV),
);
my %opts = (%Allowed_Opts, %given_opts);
for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) {
warn "option '$opt' is not recognized";
usage;
}
@ARGV = grep {!/^--/} @ARGV;
return %opts;
}
my %Opts = opts();
if ($Opts{chdir}) {
chdir $Opts{chdir} or die "$0: could not chdir $Opts{chdir}: $!"
}
my ($Config_SH, $Config_PM, $Config_heavy, $Config_POD);
my $Glossary = 'Porting/Glossary';
$Config_PM = "lib/Config.pm";
$Config_POD = "lib/Config.pod";
$Config_SH = "config.sh";
($Config_heavy = $Config_PM) =~ s/\.pm$/_heavy.pl/;
die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'"
if $Config_heavy eq $Config_PM;
my $config_txt;
my $heavy_txt;
my $export_funcs = <<'EOT';
my %Export_Cache = (myconfig => 1, config_sh => 1, config_vars => 1,
config_re => 1, compile_date => 1, local_patches => 1,
bincompat_options => 1, non_bincompat_options => 1,
header_files => 1);
EOT
my %export_ok = eval $export_funcs or die;
$config_txt .= sprintf << 'EOT', $], $export_funcs;
# This file was created by configpm when Perl was built. Any changes
# made to this file will be lost the next time perl is built.
# for a description of the variables, please have a look at the
# Glossary file, as written in the Porting folder, or use the url:
# https://github.com/Perl/perl5/blob/blead/Porting/Glossary
package Config;
use strict;
use warnings;
our ( %%Config, $VERSION );
$VERSION = "%s";
# Skip @Config::EXPORT because it only contains %%Config, which we special
# case below as it's not a function. @Config::EXPORT won't change in the
# lifetime of Perl 5.
%s
@Config::EXPORT = qw(%%Config);
@Config::EXPORT_OK = keys %%Export_Cache;
# Need to stub all the functions to make code such as print Config::config_sh
# keep working
EOT
$config_txt .= "sub $_;\n" foreach sort keys %export_ok;
my $myver = sprintf "%vd", $^V;
$config_txt .= sprintf <<'ENDOFBEG', ($myver) x 3;
# Define our own import method to avoid pulling in the full Exporter:
sub import {
shift;
@_ = @Config::EXPORT unless @_;
my @funcs = grep $_ ne '%%Config', @_;
my $export_Config = @funcs < @_ ? 1 : 0;
no strict 'refs';
my $callpkg = caller(0);
foreach my $func (@funcs) {
die qq{"$func" is not exported by the Config module\n}
unless $Export_Cache{$func};
*{$callpkg.'::'.$func} = \&{$func};
}
*{"$callpkg\::Config"} = \%%Config if $export_Config;
return;
}
die "$0: Perl lib version (%s) doesn't match executable '$^X' version ($])"
unless $^V;
$^V eq %s
or die sprintf "%%s: Perl lib version (%s) doesn't match executable '$^X' version (%%vd)", $0, $^V;
ENDOFBEG
my @non_v = ();
my @v_others = ();
my $in_v = 0;
my %Data = ();
my $quote;
# These variables were set in older versions of Perl, but are no longer needed
# by the core. However, some CPAN modules may rely on them; in particular, Tk
# (at least up to version 804.034) fails to build without them. We force them
# to be emitted to Config_heavy.pl for backcompat with such modules (and we may
# find that this set needs to be extended in future). See RT#132347.
my @v_forced = map "$_\n", split /\n+/, <<'EOT';
i_limits='define'
i_stdlib='define'
i_string='define'
i_time='define'
prototype='define'
EOT
my %seen_quotes;
{
my ($name, $val);
open(CONFIG_SH, '<', $Config_SH) || die "Can't open $Config_SH: $!";
while (<CONFIG_SH>) {
next if m:^#!/bin/sh:;
# Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure.
s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/;
my($k, $v) = ($1, $2);
# grandfather PATCHLEVEL and SUBVERSION and CONFIG
if ($k) {
if ($k eq 'PERL_VERSION') {
push @v_others, "PATCHLEVEL='$v'\n";
}
elsif ($k eq 'PERL_SUBVERSION') {
push @v_others, "SUBVERSION='$v'\n";
}
elsif ($k eq 'PERL_CONFIG_SH') {
push @v_others, "CONFIG='$v'\n";
}
}
# We can delimit things in config.sh with either ' or ".
unless ($in_v or m/^(\w+)=(['"])(.*\n)/){
push(@non_v, "#$_"); # not a name='value' line
next;
}
if ($in_v) {
$val .= $_;
}
else {
$quote = $2;
($name,$val) = ($1,$3);
if ($name eq 'cc') {
$val =~ s{^(['"]?+).*\bccache\s+}{$1};
}
}
$in_v = $val !~ /$quote\n/;
next if $in_v;
s,/,::,g if $Extensions{$name};
$val =~ s/$quote\n?\z//;
my $line = "$name=$quote$val$quote\n";
push(@v_others, $line);
$seen_quotes{$quote}++;
}
close CONFIG_SH;
}
# This is somewhat grim, but I want the code for parsing config.sh here and
# now so that I can expand $Config{ivsize} and $Config{ivtype}
my $fetch_string = <<'EOT';
# Search for it in the big string
sub fetch_string {
my($self, $key) = @_;
EOT
if ($seen_quotes{'"'}) {
# We need the full ' and " code
$fetch_string .= <<'EOT';
return undef unless my ($quote_type, $value) = $Config_SH_expanded =~ /\n$key=(['"])(.*?)\1\n/s;
# If we had a double-quote, we'd better eval it so escape
# sequences and such can be interpolated. Since the incoming
# value is supposed to follow shell rules and not perl rules,
# we escape any perl variable markers
# Historically, since " 'support' was added in change 1409, the
# interpolation was done before the undef. Stick to this arguably buggy
# behaviour as we're refactoring.
if ($quote_type eq '"') {
$value =~ s/\$/\\\$/g;
$value =~ s/\@/\\\@/g;
eval "\$value = \"$value\"";
}
# So we can say "if $Config{'foo'}".
$self->{$key} = $value eq 'undef' ? undef : $value; # cache it
}
EOT
} else {
# We only have ' delimited.
$fetch_string .= <<'EOT';
return undef unless $Config_SH_expanded =~ /\n$key=\'(.*?)\'\n/s;
# So we can say "if $Config{'foo'}".
$self->{$key} = $1 eq 'undef' ? undef : $1;
}
EOT
}
eval $fetch_string;
die if $@;
# Calculation for the keys for byteorder
# This is somewhat grim, but I need to run fetch_string here.
$Config_SH_expanded = join "\n", '', @v_others;
my $t = fetch_string ({}, 'ivtype');
my $s = fetch_string ({}, 'ivsize');
# byteorder does exist on its own but we overlay a virtual
# dynamically recomputed value.
# However, ivtype and ivsize will not vary for sane fat binaries
my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
my $byteorder_code;
if ($s == 4 || $s == 8) {
my $list = join ',', reverse(1..$s-1);
my $format = 'a'x$s;
$byteorder_code = <<"EOT";
my \$i = ord($s);
foreach my \$c ($list) { \$i <<= 8; \$i |= ord(\$c); }
our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
EOT
} else {
$byteorder_code = "our \$byteorder = '?'x$s;\n";
}
my @need_relocation;
if (fetch_string({},'userelocatableinc')) {
foreach my $what (qw(prefixexp
archlibexp
html1direxp
html3direxp
man1direxp
man3direxp
privlibexp
scriptdirexp
sitearchexp
sitebinexp
sitehtml1direxp
sitehtml3direxp
sitelibexp
siteman1direxp
siteman3direxp
sitescriptexp
vendorarchexp
vendorbinexp
vendorhtml1direxp
vendorhtml3direxp
vendorlibexp
vendorman1direxp
vendorman3direxp
vendorscriptexp
siteprefixexp
sitelib_stem
vendorlib_stem
installarchlib
installhtml1dir
installhtml3dir
installman1dir
installman3dir
installprefix
installprefixexp
installprivlib
installscript
installsitearch
installsitebin
installsitehtml1dir
installsitehtml3dir
installsitelib
installsiteman1dir
installsiteman3dir
installsitescript
installvendorarch
installvendorbin
installvendorhtml1dir
installvendorhtml3dir
installvendorlib
installvendorman1dir
installvendorman3dir
installvendorscript
)) {
push @need_relocation, $what if fetch_string({}, $what) =~ m!^\.\.\./!;
}
}
my %need_relocation;
@need_relocation{@need_relocation} = @need_relocation;
# This can have .../ anywhere:
if (fetch_string({}, 'otherlibdirs') =~ m!\.\.\./!) {
$need_relocation{otherlibdirs} = 'otherlibdirs';
}
my $relocation_code = <<'EOT';
sub relocate_inc {
my $libdir = shift;
return $libdir unless $libdir =~ s!^\.\.\./!!;
my $prefix = $^X;
if ($prefix =~ s!/[^/]*$!!) {
while ($libdir =~ m!^\.\./!) {
# Loop while $libdir starts "../" and $prefix still has a trailing
# directory
last unless $prefix =~ s!/([^/]+)$!!;
# but bail out if the directory we picked off the end of $prefix is .
# or ..
if ($1 eq '.' or $1 eq '..') {
# Undo! This should be rare, hence code it this way rather than a
# check each time before the s!!! above.
$prefix = "$prefix/$1";
last;
}
# Remove that leading ../ and loop again
substr ($libdir, 0, 3, '');
}
$libdir = "$prefix/$libdir";
}
$libdir;
}
EOT
my $osname = fetch_string({}, 'osname');
my $from = $osname eq 'VMS' ? 'PERLSHR image' : 'binary (from libperl)';
my $env_cygwin = $osname eq 'cygwin'
? 'push @env, "CYGWIN=\"$ENV{CYGWIN}\"" if $ENV{CYGWIN};' . "\n" : "";
$heavy_txt .= sprintf <<'ENDOFBEG', $osname, $osname, $from, $osname, $env_cygwin;
# This file was created by configpm when Perl was built. Any changes
# made to this file will be lost the next time perl is built.
package Config;
use strict;
use warnings;
our %%Config;
sub bincompat_options {
return split ' ', (Internals::V())[0];
}
sub non_bincompat_options {
return split ' ', (Internals::V())[1];
}
sub compile_date {
return (Internals::V())[2]
}
sub local_patches {
my (undef, undef, undef, @patches) = Internals::V();
return @patches;
}
sub _V {
die "Perl lib was built for '%s' but is being run on '$^O'"
unless "%s" eq $^O;
my ($bincompat, $non_bincompat, $date, @patches) = Internals::V();
my @opts = sort split ' ', "$bincompat $non_bincompat";
print Config::myconfig();
print "\nCharacteristics of this %s: \n";
print " Compile-time options:\n";
print " $_\n" for @opts;
if (@patches) {
print " Locally applied patches:\n";
print " $_\n" foreach @patches;
}
print " Built under %s\n";
print " $date\n" if defined $date;
my @env = map { "$_=\"$ENV{$_}\"" } sort grep {/^PERL/} keys %%ENV;
%s
if (@env) {
print " \%%ENV:\n";
print " $_\n" foreach @env;
}
print " \@INC:\n";
print " $_\n" foreach @INC;
}
sub header_files {
ENDOFBEG
$heavy_txt .= $header_files . "\n}\n\n";
if (%need_relocation) {
my $relocations_in_common;
# otherlibdirs only features in the hash
foreach (keys %need_relocation) {
$relocations_in_common++ if $Common{$_};
}
if ($relocations_in_common) {
$config_txt .= $relocation_code;
} else {
$heavy_txt .= $relocation_code;
}
}
$heavy_txt .= join('', @non_v) . "\n";
# copy config summary format from the myconfig.SH script
$heavy_txt .= "our \$summary = <<'!END!';\n";
open(MYCONFIG,'<','myconfig.SH') || die "open myconfig.SH failed: $!";
1 while defined($_ = <MYCONFIG>) && !/^Summary of/;
do { $heavy_txt .= $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/;
close(MYCONFIG);
$heavy_txt .= "\n!END!\n" . <<'EOT';
my $summary_expanded;
sub myconfig {
return $summary_expanded if $summary_expanded;
($summary_expanded = $summary) =~ s{\$(\w+)}
{
my $c;
if ($1 eq 'git_ancestor_line') {
if ($Config::Config{git_ancestor}) {
$c= "\n Ancestor: $Config::Config{git_ancestor}";
} else {
$c= "";
}
} else {
$c = $Config::Config{$1};
}
defined($c) ? $c : 'undef'
}ge;
$summary_expanded;
}
local *_ = \my $a;
$_ = <<'!END!';
EOT
#proper lexicographical order of the keys
my %seen_var;
$heavy_txt .= join('',
map { $_->[-1] }
sort {$a->[0] cmp $b->[0] }
grep { !$seen_var{ $_->[0] }++ }
map {
/^([^=]+)/ ? [ $1, $_ ]
: [ $_, $_ ] # shouldnt happen
} @v_others, @v_forced
) . "!END!\n";
# Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of
# the precached keys
if ($Common{byteorder}) {
$config_txt .= $byteorder_code;
} else {
$heavy_txt .= $byteorder_code;
}
if (@need_relocation) {
$heavy_txt .= 'foreach my $what (qw(' . join (' ', @need_relocation) .
")) {\n" . <<'EOT';
s/^($what=)(['"])(.*?)\2/$1 . $2 . relocate_inc($3) . $2/me;
}
EOT
# Currently it only makes sense to do the ... relocation on Unix, so there's
# no need to emulate the "which separator for this platform" logic in perl.c -
# ':' will always be applicable
if ($need_relocation{otherlibdirs}) {
$heavy_txt .= << 'EOT';
s{^(otherlibdirs=)(['"])(.*?)\2}
{$1 . $2 . join ':', map {relocate_inc($_)} split ':', $3 . $2}me;
EOT
}
}
$heavy_txt .= <<'EOT';
s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m;
my $config_sh_len = length $_;
our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL';
EOT
foreach my $prefix (qw(ccflags ldflags)) {
my $value = fetch_string ({}, $prefix);
my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles");
if (defined $withlargefiles) {
$value =~ s/\Q$withlargefiles\E\b//;
$heavy_txt .= "${prefix}_nolargefiles='$value'\n";
}
}
foreach my $prefix (qw(libs libswanted)) {
my $value = fetch_string ({}, $prefix);
my $withlf = fetch_string ({}, 'libswanted_uselargefiles');
next unless defined $withlf;
my @lflibswanted
= split(' ', fetch_string ({}, 'libswanted_uselargefiles'));
if (@lflibswanted) {
my %lflibswanted;
@lflibswanted{@lflibswanted} = ();
if ($prefix eq 'libs') {
my @libs = grep { /^-l(.+)/ &&
not exists $lflibswanted{$1} }
split(' ', fetch_string ({}, 'libs'));
$value = join(' ', @libs);
} else {
my @libswanted = grep { not exists $lflibswanted{$_} }
split(' ', fetch_string ({}, 'libswanted'));
$value = join(' ', @libswanted);
}
}
$heavy_txt .= "${prefix}_nolargefiles='$value'\n";
}
if (open(my $fh, '<', 'cflags')) {
my $ccwarnflags;
my $ccstdflags;
while (<$fh>) {
if (/^warn="(.+)"$/) {
$ccwarnflags = $1;
} elsif (/^stdflags="(.+)"$/) {
$ccstdflags = $1;
}
}
if (defined $ccwarnflags) {
$heavy_txt .= "ccwarnflags='$ccwarnflags'\n";
}
if (defined $ccstdflags) {
$heavy_txt .= "ccstdflags='$ccstdflags'\n";
}
}
$heavy_txt .= "EOVIRTUAL\n";
$heavy_txt .= <<'ENDOFGIT';
eval {
# do not have hairy conniptions if this isnt available
require 'Config_git.pl';
$Config_SH_expanded .= $Config::Git_Data;
1;
} or warn "Warning: failed to load Config_git.pl, something strange about this perl...\n";
ENDOFGIT
$heavy_txt .= $fetch_string;
$config_txt .= <<'ENDOFEND';
sub FETCH {
my($self, $key) = @_;
# check for cached value (which may be undef so we use exists not defined)
return exists $self->{$key} ? $self->{$key} : $self->fetch_string($key);
}
ENDOFEND
$heavy_txt .= <<'ENDOFEND';
my $prevpos = 0;
sub FIRSTKEY {
$prevpos = 0;
substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 );
}
sub NEXTKEY {
ENDOFEND
if ($seen_quotes{'"'}) {
$heavy_txt .= <<'ENDOFEND';
# Find out how the current key's quoted so we can skip to its end.
my $quote = substr($Config_SH_expanded,
index($Config_SH_expanded, "=", $prevpos)+1, 1);
my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2;
ENDOFEND
} else {
# Just ' quotes, so it's much easier.
$heavy_txt .= <<'ENDOFEND';
my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2;
ENDOFEND
}
$heavy_txt .= <<'ENDOFEND';
my $len = index($Config_SH_expanded, "=", $pos) - $pos;
$prevpos = $pos;
$len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef;
}
sub EXISTS {
return 1 if exists($_[0]->{$_[1]});
return(index($Config_SH_expanded, "\n$_[1]='") != -1
ENDOFEND
if ($seen_quotes{'"'}) {
$heavy_txt .= <<'ENDOFEND';
or index($Config_SH_expanded, "\n$_[1]=\"") != -1
ENDOFEND
}
$heavy_txt .= <<'ENDOFEND';
);
}
sub STORE { die "\%Config::Config is read-only\n" }
*DELETE = *CLEAR = \*STORE; # Typeglob aliasing uses less space
sub config_sh {
substr $Config_SH_expanded, 1, $config_sh_len;
}
sub config_re {
my $re = shift;
return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/,
$Config_SH_expanded;
}
sub config_vars {
# implements -V:cfgvar option (see perlrun -V:)
foreach (@_) {
# find optional leading, trailing colons; and query-spec
my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft,
# map colon-flags to print decorations
my $prfx = $notag ? '': "$qry="; # tag-prefix for print
my $lnend = $lncont ? ' ' : ";\n"; # line ending for print
# all config-vars are by definition \w only, any \W means regex
if ($qry =~ /\W/) {
my @matches = config_re($qry);
print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag;
print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag;
} else {
my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry}
: 'UNKNOWN';
$v = 'undef' unless defined $v;
print "${prfx}'${v}'$lnend";
}
}
}
# Called by the real AUTOLOAD
sub launcher {
undef &AUTOLOAD;
goto \&$Config::AUTOLOAD;
}
1;
ENDOFEND
if ($^O eq 'os2') {
$config_txt .= <<'ENDOFSET';
my %preconfig;
if ($OS2::is_aout) {
my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m;
for (split ' ', $value) {
($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m;
$preconfig{$_} = $v eq 'undef' ? undef : $v;
}
}
$preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't
sub TIEHASH { bless {%preconfig} }
ENDOFSET
# Extract the name of the DLL from the makefile to avoid duplication
my ($f) = grep -r, qw(GNUMakefile Makefile);
my $dll;
if (open my $fh, '<', $f) {
while (<$fh>) {
$dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/;
}
}
$config_txt .= <<ENDOFSET if $dll;
\$preconfig{dll_name} = '$dll';
ENDOFSET
} else {
$config_txt .= <<'ENDOFSET';
sub TIEHASH {
bless $_[1], $_[0];
}
ENDOFSET
}
foreach my $key (keys %Common) {
my $value = fetch_string ({}, $key);
# Is it safe on the LHS of => ?
my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'";
if (defined $value) {
# Quote things for a '' string
$value =~ s!\\!\\\\!g;
$value =~ s!'!\\'!g;
$value = "'$value'";
if ($key eq 'otherlibdirs') {
$value = "join (':', map {relocate_inc(\$_)} split (':', $value))";
} elsif ($need_relocation{$key}) {
$value = "relocate_inc($value)";
}
} else {
$value = "undef";
}
$Common{$key} = "$qkey => $value";
}
if ($Common{byteorder}) {
$Common{byteorder} = 'byteorder => $byteorder';
}
my $fast_config = join '', map { " $_,\n" } sort values %Common;
# Sanity check needed to stop an infinite loop if Config_heavy.pl fails to
# define &launcher for some reason (eg it got truncated)
$config_txt .= sprintf <<'ENDOFTIE', $fast_config;
sub DESTROY { }
sub AUTOLOAD {
require 'Config_heavy.pl';
goto \&launcher unless $Config::AUTOLOAD =~ /launcher$/;
die "&Config::AUTOLOAD failed on $Config::AUTOLOAD";
}
# tie returns the object, so the value returned to require will be true.
tie %%Config, 'Config', {
%s};
ENDOFTIE
open(CONFIG_POD, '>', $Config_POD) or die "Can't open $Config_POD: $!";
print CONFIG_POD <<'ENDOFTAIL';
=head1 NAME
=for comment Generated by configpm. Any changes made here will be lost!
Config - access Perl configuration information
=head1 SYNOPSIS
use Config;
if ($Config{usethreads}) {
print "has thread support\n"
}
use Config qw(myconfig config_sh config_vars config_re);
print myconfig();
print config_sh();
print config_re();
config_vars(qw(osname archname));
=head1 DESCRIPTION
The Config module contains all the information that was available to
the C<Configure> program at Perl build time (over 900 values).
Shell variables from the F<config.sh> file (written by Configure) are
stored in the readonly-variable C<%Config>, indexed by their names.
Values stored in config.sh as 'undef' are returned as undefined
values. The perl C<exists> function can be used to check if a
named variable exists.
For a description of the variables, please have a look at the
Glossary file, as written in the Porting folder, or use the url:
https://github.com/Perl/perl5/blob/blead/Porting/Glossary
=over 4
=item myconfig()
Returns a textual summary of the major perl configuration values.
See also C<-V> in L<perlrun/Command Switches>.
=item config_sh()
Returns the entire perl configuration information in the form of the
original config.sh shell variable assignment script.
=item config_re($regex)
Like config_sh() but returns, as a list, only the config entries who's
names match the $regex.
=item config_vars(@names)
Prints to STDOUT the values of the named configuration variable. Each is
printed on a separate line in the form:
name='value';
Names which are unknown are output as C<name='UNKNOWN';>.
See also C<-V:name> in L<perlrun/Command Switches>.
=item bincompat_options()
Returns a list of C pre-processor options used when compiling this F<perl>
binary, which affect its binary compatibility with extensions.
C<bincompat_options()> and C<non_bincompat_options()> are shown together in
the output of C<perl -V> as I<Compile-time options>.
=item non_bincompat_options()
Returns a list of C pre-processor options used when compiling this F<perl>
binary, which do not affect binary compatibility with extensions.
=item compile_date()
Returns the compile date (as a string), equivalent to what is shown by
C<perl -V>
=item local_patches()
Returns a list of the names of locally applied patches, equivalent to what
is shown by C<perl -V>.
=item header_files()
Returns a list of the header files that should be used as dependencies for
XS code, for this version of Perl on this platform.
=back
=head1 EXAMPLE
Here's a more sophisticated example of using %Config:
use Config;
use strict;
my %sig_num;
my @sig_name;
unless($Config{sig_name} && $Config{sig_num}) {
die "No sigs?";
} else {
my @names = split ' ', $Config{sig_name};
@sig_num{@names} = split ' ', $Config{sig_num};
foreach (@names) {
$sig_name[$sig_num{$_}] ||= $_;
}
}
print "signal #17 = $sig_name[17]\n";
if ($sig_num{ALRM}) {
print "SIGALRM is $sig_num{ALRM}\n";
}
=head1 WARNING
Because this information is not stored within the perl executable
itself it is possible (but unlikely) that the information does not
relate to the actual perl binary which is being used to access it.
The Config module is installed into the architecture and version
specific library directory ($Config{installarchlib}) and it checks the
perl version number when loaded.
The values stored in config.sh may be either single-quoted or
double-quoted. Double-quoted strings are handy for those cases where you
need to include escape sequences in the strings. To avoid runtime variable
interpolation, any C<$> and C<@> characters are replaced by C<\$> and
C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$>
or C<\@> in double-quoted strings unless you're willing to deal with the
consequences. (The slashes will end up escaped and the C<$> or C<@> will
trigger variable interpolation)
=head1 GLOSSARY