Commit | Line | Data |
a0d0e21e |
1 | #!./miniperl -w |
2f4f46ad |
2 | use strict; |
3 | use vars qw(%Config $Config_SH_expanded); |
8990e307 |
4 | |
a8e1d30b |
5 | my $how_many_common = 22; |
6 | |
7 | # commonly used names to precache (and hence lookup fastest) |
8 | my %Common; |
9 | |
10 | while ($how_many_common--) { |
11 | $_ = <DATA>; |
12 | chomp; |
13 | /^(\S+):\s*(\d+)$/ or die "Malformed line '$_'"; |
14 | $Common{$1} = $1; |
15 | } |
5435c704 |
16 | |
17 | # names of things which may need to have slashes changed to double-colons |
18 | my %Extensions = map {($_,$_)} |
19 | qw(dynamic_ext static_ext extensions known_extensions); |
20 | |
21 | # allowed opts as well as specifies default and initial values |
22 | my %Allowed_Opts = ( |
2d9d8159 |
23 | 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM |
24 | 'glossary' => 1, # --no-glossary - no glossary file inclusion, |
5435c704 |
25 | # for compactness |
2d9d8159 |
26 | 'heavy' => '', # pathname of the Config_heavy.pl file |
18f68570 |
27 | ); |
18f68570 |
28 | |
5435c704 |
29 | sub opts { |
30 | # user specified options |
31 | my %given_opts = ( |
32 | # --opt=smth |
33 | (map {/^--([\-_\w]+)=(.*)$/} @ARGV), |
34 | # --opt --no-opt --noopt |
35 | (map {/^no-?(.*)$/i?($1=>0):($_=>1)} map {/^--([\-_\w]+)$/} @ARGV), |
36 | ); |
37 | |
38 | my %opts = (%Allowed_Opts, %given_opts); |
39 | |
40 | for my $opt (grep {!exists $Allowed_Opts{$_}} keys %given_opts) { |
41 | die "option '$opt' is not recognized"; |
42 | } |
43 | @ARGV = grep {!/^--/} @ARGV; |
44 | |
45 | return %opts; |
46 | } |
18f68570 |
47 | |
5435c704 |
48 | |
49 | my %Opts = opts(); |
50 | |
2d9d8159 |
51 | my ($Config_PM, $Config_heavy); |
5435c704 |
52 | my $Glossary = $ARGV[1] || 'Porting/Glossary'; |
53 | |
54 | if ($Opts{cross}) { |
18f68570 |
55 | # creating cross-platform config file |
56 | mkdir "xlib"; |
5435c704 |
57 | mkdir "xlib/$Opts{cross}"; |
58 | $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm"; |
18f68570 |
59 | } |
60 | else { |
5435c704 |
61 | $Config_PM = $ARGV[0] || 'lib/Config.pm'; |
18f68570 |
62 | } |
2d9d8159 |
63 | if ($Opts{heavy}) { |
64 | $Config_heavy = $Opts{heavy}; |
65 | } |
66 | else { |
67 | ($Config_heavy = $Config_PM) =~ s!\.pm$!_heavy.pl!; |
68 | die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'" |
69 | if $Config_heavy eq $Config_PM; |
70 | } |
8990e307 |
71 | |
5435c704 |
72 | open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n"; |
2d9d8159 |
73 | open CONFIG_HEAVY, ">$Config_heavy" or die "Can't open $Config_heavy: $!\n"; |
74 | |
75 | print CONFIG_HEAVY <<'ENDOFBEG'; |
76 | # This file was created by configpm when Perl was built. Any changes |
77 | # made to this file will be lost the next time perl is built. |
78 | |
79 | package Config; |
80 | use strict; |
81 | # use warnings; Pulls in Carp |
82 | # use vars pulls in Carp |
83 | ENDOFBEG |
fec02dd3 |
84 | |
5435c704 |
85 | my $myver = sprintf "v%vd", $^V; |
a0d0e21e |
86 | |
5435c704 |
87 | printf CONFIG <<'ENDOFBEG', ($myver) x 3; |
88 | # This file was created by configpm when Perl was built. Any changes |
89 | # made to this file will be lost the next time perl is built. |
3c81428c |
90 | |
8990e307 |
91 | package Config; |
2f4f46ad |
92 | use strict; |
93 | # use warnings; Pulls in Carp |
94 | # use vars pulls in Carp |
95 | @Config::EXPORT = qw(%%Config); |
96 | @Config::EXPORT_OK = qw(myconfig config_sh config_vars config_re); |
a48f8c77 |
97 | |
43d06990 |
98 | # Need to stub all the functions to make code such as print Config::config_sh |
99 | # keep working |
100 | |
101 | sub myconfig; |
102 | sub config_sh; |
103 | sub config_vars; |
104 | sub config_re; |
105 | |
2f4f46ad |
106 | my %%Export_Cache = map {($_ => 1)} (@Config::EXPORT, @Config::EXPORT_OK); |
107 | |
108 | our %%Config; |
e3d0cac0 |
109 | |
110 | # Define our own import method to avoid pulling in the full Exporter: |
111 | sub import { |
a48f8c77 |
112 | my $pkg = shift; |
2f4f46ad |
113 | @_ = @Config::EXPORT unless @_; |
5435c704 |
114 | |
a48f8c77 |
115 | my @funcs = grep $_ ne '%%Config', @_; |
116 | my $export_Config = @funcs < @_ ? 1 : 0; |
5435c704 |
117 | |
2f4f46ad |
118 | no strict 'refs'; |
a48f8c77 |
119 | my $callpkg = caller(0); |
120 | foreach my $func (@funcs) { |
121 | die sprintf qq{"%%s" is not exported by the %%s module\n}, |
122 | $func, __PACKAGE__ unless $Export_Cache{$func}; |
123 | *{$callpkg.'::'.$func} = \&{$func}; |
124 | } |
5435c704 |
125 | |
a48f8c77 |
126 | *{"$callpkg\::Config"} = \%%Config if $export_Config; |
127 | return; |
e3d0cac0 |
128 | } |
129 | |
5435c704 |
130 | die "Perl lib version (%s) doesn't match executable version ($])" |
131 | unless $^V; |
de98c553 |
132 | |
5435c704 |
133 | $^V eq %s |
a48f8c77 |
134 | or die "Perl lib version (%s) doesn't match executable version (" . |
135 | sprintf("v%%vd",$^V) . ")"; |
a0d0e21e |
136 | |
8990e307 |
137 | ENDOFBEG |
138 | |
16d20bd9 |
139 | |
5435c704 |
140 | my @non_v = (); |
141 | my @v_fast = (); |
5435c704 |
142 | my @v_others = (); |
143 | my $in_v = 0; |
144 | my %Data = (); |
145 | |
146 | # This is somewhat grim, but I want the code for parsing config.sh here and |
147 | # now so that I can expand $Config{ivsize} and $Config{ivtype} |
148 | |
149 | my $fetch_string = <<'EOT'; |
150 | |
151 | # Search for it in the big string |
152 | sub fetch_string { |
153 | my($self, $key) = @_; |
154 | |
155 | my $quote_type = "'"; |
156 | my $marker = "$key="; |
157 | |
a6d6498e |
158 | # Check for the common case, ' delimited |
3be00128 |
159 | my $start = index($Config_SH_expanded, "\n$marker$quote_type"); |
5435c704 |
160 | # If that failed, check for " delimited |
161 | if ($start == -1) { |
162 | $quote_type = '"'; |
3be00128 |
163 | $start = index($Config_SH_expanded, "\n$marker$quote_type"); |
5435c704 |
164 | } |
3be00128 |
165 | # Start can never be -1 now, as we've rigged the long string we're |
166 | # searching with an initial dummy newline. |
167 | return undef if $start == -1; |
5435c704 |
168 | |
3be00128 |
169 | $start += length($marker) + 2; |
170 | |
171 | my $value = substr($Config_SH_expanded, $start, |
172 | index($Config_SH_expanded, "$quote_type\n", $start) |
173 | - $start); |
5435c704 |
174 | |
175 | # If we had a double-quote, we'd better eval it so escape |
176 | # sequences and such can be interpolated. Since the incoming |
177 | # value is supposed to follow shell rules and not perl rules, |
178 | # we escape any perl variable markers |
179 | if ($quote_type eq '"') { |
180 | $value =~ s/\$/\\\$/g; |
181 | $value =~ s/\@/\\\@/g; |
182 | eval "\$value = \"$value\""; |
183 | } |
184 | |
185 | # So we can say "if $Config{'foo'}". |
186 | $value = undef if $value eq 'undef'; |
187 | $self->{$key} = $value; # cache it |
188 | } |
189 | EOT |
190 | |
191 | eval $fetch_string; |
192 | die if $@; |
a0d0e21e |
193 | |
2f4f46ad |
194 | { |
195 | my ($name, $val); |
196 | open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!"; |
197 | while (<CONFIG_SH>) { |
a0d0e21e |
198 | next if m:^#!/bin/sh:; |
5435c704 |
199 | |
a02608de |
200 | # Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure. |
d4de4258 |
201 | s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/; |
3905a40f |
202 | my($k, $v) = ($1, $2); |
5435c704 |
203 | |
2000072c |
204 | # grandfather PATCHLEVEL and SUBVERSION and CONFIG |
cceca5ed |
205 | if ($k) { |
206 | if ($k eq 'PERL_VERSION') { |
207 | push @v_others, "PATCHLEVEL='$v'\n"; |
208 | } |
209 | elsif ($k eq 'PERL_SUBVERSION') { |
210 | push @v_others, "SUBVERSION='$v'\n"; |
211 | } |
a02608de |
212 | elsif ($k eq 'PERL_CONFIG_SH') { |
2000072c |
213 | push @v_others, "CONFIG='$v'\n"; |
214 | } |
cceca5ed |
215 | } |
5435c704 |
216 | |
435ec615 |
217 | # We can delimit things in config.sh with either ' or ". |
218 | unless ($in_v or m/^(\w+)=(['"])(.*\n)/){ |
a0d0e21e |
219 | push(@non_v, "#$_"); # not a name='value' line |
220 | next; |
221 | } |
2f4f46ad |
222 | my $quote = $2; |
5435c704 |
223 | if ($in_v) { |
224 | $val .= $_; |
225 | } |
226 | else { |
227 | ($name,$val) = ($1,$3); |
228 | } |
435ec615 |
229 | $in_v = $val !~ /$quote\n/; |
44a8e56a |
230 | next if $in_v; |
a0d0e21e |
231 | |
5435c704 |
232 | s,/,::,g if $Extensions{$name}; |
a0d0e21e |
233 | |
5435c704 |
234 | $val =~ s/$quote\n?\z//; |
3c81428c |
235 | |
5435c704 |
236 | my $line = "$name=$quote$val$quote\n"; |
237 | if (!$Common{$name}){ |
238 | push(@v_others, $line); |
239 | } |
240 | else { |
241 | push(@v_fast, $line); |
5435c704 |
242 | } |
2f4f46ad |
243 | } |
244 | close CONFIG_SH; |
5435c704 |
245 | } |
2f4f46ad |
246 | |
3c81428c |
247 | |
8468119f |
248 | # Calculation for the keys for byteorder |
249 | # This is somewhat grim, but I need to run fetch_string here. |
06482b90 |
250 | our $Config_SH_expanded = join "\n", '', @v_fast, @v_others; |
8468119f |
251 | |
252 | my $t = fetch_string ({}, 'ivtype'); |
253 | my $s = fetch_string ({}, 'ivsize'); |
254 | |
255 | # byteorder does exist on its own but we overlay a virtual |
256 | # dynamically recomputed value. |
257 | |
258 | # However, ivtype and ivsize will not vary for sane fat binaries |
259 | |
260 | my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I'; |
261 | |
262 | my $byteorder_code; |
263 | if ($s == 4 || $s == 8) { |
264 | my $list = join ',', reverse(2..$s); |
265 | my $format = 'a'x$s; |
266 | $byteorder_code = <<"EOT"; |
2855b621 |
267 | |
8468119f |
268 | my \$i = 0; |
269 | foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 } |
270 | \$i |= ord(1); |
2d9d8159 |
271 | our \$byteorder = join('', unpack('$format', pack('$f', \$i))); |
8468119f |
272 | EOT |
273 | } else { |
2d9d8159 |
274 | $byteorder_code = "our \$byteorder = '?'x$s;\n"; |
8468119f |
275 | } |
276 | |
2d9d8159 |
277 | print CONFIG_HEAVY @non_v, "\n"; |
3c81428c |
278 | |
5435c704 |
279 | # copy config summary format from the myconfig.SH script |
2d9d8159 |
280 | print CONFIG_HEAVY "our \$summary : unique = <<'!END!';\n"; |
3b5ca523 |
281 | open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!"; |
54310121 |
282 | 1 while defined($_ = <MYCONFIG>) && !/^Summary of/; |
2d9d8159 |
283 | do { print CONFIG_HEAVY $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/; |
3c81428c |
284 | close(MYCONFIG); |
a0d0e21e |
285 | |
90ec21fb |
286 | # NB. as $summary is unique, we need to copy it in a lexical variable |
287 | # before expanding it, because may have been made readonly if a perl |
288 | # interpreter has been cloned. |
289 | |
2d9d8159 |
290 | print CONFIG_HEAVY "\n!END!\n", <<'EOT'; |
90ec21fb |
291 | my $summary_expanded; |
3c81428c |
292 | |
293 | sub myconfig { |
90ec21fb |
294 | return $summary_expanded if $summary_expanded; |
295 | ($summary_expanded = $summary) =~ s{\$(\w+)} |
2d9d8159 |
296 | { my $c = $Config::Config{$1}; defined($c) ? $c : 'undef' }ge; |
90ec21fb |
297 | $summary_expanded; |
3c81428c |
298 | } |
5435c704 |
299 | |
8468119f |
300 | local *_ = \my $a; |
301 | $_ = <<'!END!'; |
3c81428c |
302 | EOT |
303 | |
2855b621 |
304 | print CONFIG_HEAVY join('', @v_fast, sort @v_others), "!END!\n"; |
305 | |
306 | # Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of |
307 | # the precached keys |
308 | if ($Common{byteorder}) { |
309 | print CONFIG $byteorder_code; |
310 | } else { |
311 | print CONFIG_HEAVY $byteorder_code; |
312 | } |
5435c704 |
313 | |
2d9d8159 |
314 | print CONFIG_HEAVY <<'EOT'; |
2d9d8159 |
315 | s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m; |
43d06990 |
316 | |
317 | my $config_sh_len = length $_; |
3be00128 |
318 | |
06482b90 |
319 | our $Config_SH_expanded : unique = "\n$_" . << 'EOVIRTUAL'; |
8468119f |
320 | EOT |
321 | |
06482b90 |
322 | foreach my $prefix (qw(ccflags ldflags)) { |
323 | my $value = fetch_string ({}, $prefix); |
324 | my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles"); |
325 | $value =~ s/\Q$withlargefiles\E\b//; |
2d9d8159 |
326 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n"; |
06482b90 |
327 | } |
5435c704 |
328 | |
06482b90 |
329 | foreach my $prefix (qw(libs libswanted)) { |
330 | my $value = fetch_string ({}, $prefix); |
331 | my @lflibswanted |
332 | = split(' ', fetch_string ({}, 'libswanted_uselargefiles')); |
333 | if (@lflibswanted) { |
334 | my %lflibswanted; |
335 | @lflibswanted{@lflibswanted} = (); |
336 | if ($prefix eq 'libs') { |
337 | my @libs = grep { /^-l(.+)/ && |
338 | not exists $lflibswanted{$1} } |
339 | split(' ', fetch_string ({}, 'libs')); |
340 | $value = join(' ', @libs); |
341 | } else { |
342 | my @libswanted = grep { not exists $lflibswanted{$_} } |
343 | split(' ', fetch_string ({}, 'libswanted')); |
344 | $value = join(' ', @libswanted); |
4b2ec495 |
345 | } |
435ec615 |
346 | } |
2d9d8159 |
347 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n"; |
5435c704 |
348 | } |
349 | |
2d9d8159 |
350 | print CONFIG_HEAVY "EOVIRTUAL\n"; |
06482b90 |
351 | |
2d9d8159 |
352 | print CONFIG_HEAVY $fetch_string; |
06482b90 |
353 | |
354 | print CONFIG <<'ENDOFEND'; |
355 | |
2d9d8159 |
356 | sub FETCH { |
5435c704 |
357 | my($self, $key) = @_; |
358 | |
359 | # check for cached value (which may be undef so we use exists not defined) |
360 | return $self->{$key} if exists $self->{$key}; |
361 | |
06482b90 |
362 | return $self->fetch_string($key); |
a0d0e21e |
363 | } |
2d9d8159 |
364 | ENDOFEND |
365 | |
366 | print CONFIG_HEAVY <<'ENDOFEND'; |
3c81428c |
367 | my $prevpos = 0; |
368 | |
a0d0e21e |
369 | sub FIRSTKEY { |
370 | $prevpos = 0; |
2ddb7828 |
371 | substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 ); |
a0d0e21e |
372 | } |
373 | |
374 | sub NEXTKEY { |
435ec615 |
375 | # Find out how the current key's quoted so we can skip to its end. |
3be00128 |
376 | my $quote = substr($Config_SH_expanded, |
377 | index($Config_SH_expanded, "=", $prevpos)+1, 1); |
378 | my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2; |
379 | my $len = index($Config_SH_expanded, "=", $pos) - $pos; |
a0d0e21e |
380 | $prevpos = $pos; |
3be00128 |
381 | $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef; |
85e6fe83 |
382 | } |
a0d0e21e |
383 | |
2ddb7828 |
384 | sub EXISTS { |
5435c704 |
385 | return 1 if exists($_[0]->{$_[1]}); |
386 | |
3be00128 |
387 | return(index($Config_SH_expanded, "\n$_[1]='") != -1 or |
2ddb7828 |
388 | index($Config_SH_expanded, "\n$_[1]=\"") != -1 |
5435c704 |
389 | ); |
a0d0e21e |
390 | } |
391 | |
3c81428c |
392 | sub STORE { die "\%Config::Config is read-only\n" } |
5435c704 |
393 | *DELETE = \&STORE; |
394 | *CLEAR = \&STORE; |
a0d0e21e |
395 | |
3c81428c |
396 | |
397 | sub config_sh { |
43d06990 |
398 | substr $Config_SH_expanded, 1, $config_sh_len; |
748a9306 |
399 | } |
9193ea20 |
400 | |
401 | sub config_re { |
402 | my $re = shift; |
3be00128 |
403 | return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/, |
404 | $Config_SH_expanded; |
9193ea20 |
405 | } |
406 | |
3c81428c |
407 | sub config_vars { |
307dc113 |
408 | # implements -V:cfgvar option (see perlrun -V:) |
a48f8c77 |
409 | foreach (@_) { |
307dc113 |
410 | # find optional leading, trailing colons; and query-spec |
4a305f6a |
411 | my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft, |
307dc113 |
412 | # map colon-flags to print decorations |
413 | my $prfx = $notag ? '': "$qry="; # tag-prefix for print |
414 | my $lnend = $lncont ? ' ' : ";\n"; # line ending for print |
4a305f6a |
415 | |
307dc113 |
416 | # all config-vars are by definition \w only, any \W means regex |
4a305f6a |
417 | if ($qry =~ /\W/) { |
418 | my @matches = config_re($qry); |
419 | print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag; |
420 | print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag; |
a48f8c77 |
421 | } else { |
2d9d8159 |
422 | my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry} |
423 | : 'UNKNOWN'; |
a48f8c77 |
424 | $v = 'undef' unless defined $v; |
4a305f6a |
425 | print "${prfx}'${v}'$lnend"; |
a48f8c77 |
426 | } |
3c81428c |
427 | } |
428 | } |
429 | |
2d9d8159 |
430 | # Called by the real AUTOLOAD |
431 | sub launcher { |
432 | undef &AUTOLOAD; |
433 | goto \&$Config::AUTOLOAD; |
434 | } |
435 | |
436 | 1; |
9193ea20 |
437 | ENDOFEND |
438 | |
439 | if ($^O eq 'os2') { |
a48f8c77 |
440 | print CONFIG <<'ENDOFSET'; |
9193ea20 |
441 | my %preconfig; |
442 | if ($OS2::is_aout) { |
3be00128 |
443 | my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m; |
9193ea20 |
444 | for (split ' ', $value) { |
3be00128 |
445 | ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m; |
9193ea20 |
446 | $preconfig{$_} = $v eq 'undef' ? undef : $v; |
447 | } |
448 | } |
764df951 |
449 | $preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't |
9193ea20 |
450 | sub TIEHASH { bless {%preconfig} } |
451 | ENDOFSET |
a48f8c77 |
452 | # Extract the name of the DLL from the makefile to avoid duplication |
453 | my ($f) = grep -r, qw(GNUMakefile Makefile); |
454 | my $dll; |
455 | if (open my $fh, '<', $f) { |
456 | while (<$fh>) { |
457 | $dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/; |
458 | } |
30500b05 |
459 | } |
a48f8c77 |
460 | print CONFIG <<ENDOFSET if $dll; |
30500b05 |
461 | \$preconfig{dll_name} = '$dll'; |
462 | ENDOFSET |
9193ea20 |
463 | } else { |
a48f8c77 |
464 | print CONFIG <<'ENDOFSET'; |
5435c704 |
465 | sub TIEHASH { |
466 | bless $_[1], $_[0]; |
467 | } |
9193ea20 |
468 | ENDOFSET |
469 | } |
470 | |
a8e1d30b |
471 | foreach my $key (keys %Common) { |
472 | my $value = fetch_string ({}, $key); |
473 | # Is it safe on the LHS of => ? |
474 | my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'"; |
475 | if (defined $value) { |
476 | # Quote things for a '' string |
477 | $value =~ s!\\!\\\\!g; |
478 | $value =~ s!'!\\'!g; |
479 | $value = "'$value'"; |
480 | } else { |
481 | $value = "undef"; |
482 | } |
483 | $Common{$key} = "$qkey => $value"; |
484 | } |
2855b621 |
485 | |
486 | if ($Common{byteorder}) { |
487 | $Common{byteorder} = 'byteorder => $byteorder'; |
488 | } |
489 | my $fast_config = join '', map { " $_,\n" } sort values %Common; |
5435c704 |
490 | |
8468119f |
491 | print CONFIG sprintf <<'ENDOFTIE', $fast_config; |
9193ea20 |
492 | |
fb73857a |
493 | sub DESTROY { } |
494 | |
2d9d8159 |
495 | sub AUTOLOAD { |
c1b2b415 |
496 | require 'Config_heavy.pl'; |
2d9d8159 |
497 | goto \&launcher; |
498 | die "&Config::AUTOLOAD failed on $Config::AUTOLOAD"; |
499 | } |
500 | |
5435c704 |
501 | tie %%Config, 'Config', { |
a8e1d30b |
502 | %s}; |
9193ea20 |
503 | |
3c81428c |
504 | 1; |
5435c704 |
505 | ENDOFTIE |
506 | |
748a9306 |
507 | |
5435c704 |
508 | open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!"; |
509 | print CONFIG_POD <<'ENDOFTAIL'; |
3c81428c |
510 | =head1 NAME |
a0d0e21e |
511 | |
3c81428c |
512 | Config - access Perl configuration information |
513 | |
514 | =head1 SYNOPSIS |
515 | |
516 | use Config; |
63f18be6 |
517 | if ($Config{usethreads}) { |
518 | print "has thread support\n" |
3c81428c |
519 | } |
520 | |
a48f8c77 |
521 | use Config qw(myconfig config_sh config_vars config_re); |
3c81428c |
522 | |
523 | print myconfig(); |
524 | |
525 | print config_sh(); |
526 | |
a48f8c77 |
527 | print config_re(); |
528 | |
3c81428c |
529 | config_vars(qw(osname archname)); |
530 | |
531 | |
532 | =head1 DESCRIPTION |
533 | |
534 | The Config module contains all the information that was available to |
535 | the C<Configure> program at Perl build time (over 900 values). |
536 | |
537 | Shell variables from the F<config.sh> file (written by Configure) are |
538 | stored in the readonly-variable C<%Config>, indexed by their names. |
539 | |
540 | Values stored in config.sh as 'undef' are returned as undefined |
1fef88e7 |
541 | values. The perl C<exists> function can be used to check if a |
3c81428c |
542 | named variable exists. |
543 | |
544 | =over 4 |
545 | |
546 | =item myconfig() |
547 | |
548 | Returns a textual summary of the major perl configuration values. |
549 | See also C<-V> in L<perlrun/Switches>. |
550 | |
551 | =item config_sh() |
552 | |
553 | Returns the entire perl configuration information in the form of the |
554 | original config.sh shell variable assignment script. |
555 | |
a48f8c77 |
556 | =item config_re($regex) |
557 | |
558 | Like config_sh() but returns, as a list, only the config entries who's |
559 | names match the $regex. |
560 | |
3c81428c |
561 | =item config_vars(@names) |
562 | |
563 | Prints to STDOUT the values of the named configuration variable. Each is |
564 | printed on a separate line in the form: |
565 | |
566 | name='value'; |
567 | |
568 | Names which are unknown are output as C<name='UNKNOWN';>. |
569 | See also C<-V:name> in L<perlrun/Switches>. |
570 | |
571 | =back |
572 | |
573 | =head1 EXAMPLE |
574 | |
575 | Here's a more sophisticated example of using %Config: |
576 | |
577 | use Config; |
743c51bc |
578 | use strict; |
579 | |
580 | my %sig_num; |
581 | my @sig_name; |
582 | unless($Config{sig_name} && $Config{sig_num}) { |
583 | die "No sigs?"; |
584 | } else { |
585 | my @names = split ' ', $Config{sig_name}; |
586 | @sig_num{@names} = split ' ', $Config{sig_num}; |
587 | foreach (@names) { |
588 | $sig_name[$sig_num{$_}] ||= $_; |
589 | } |
590 | } |
3c81428c |
591 | |
743c51bc |
592 | print "signal #17 = $sig_name[17]\n"; |
593 | if ($sig_num{ALRM}) { |
594 | print "SIGALRM is $sig_num{ALRM}\n"; |
3c81428c |
595 | } |
596 | |
597 | =head1 WARNING |
598 | |
599 | Because this information is not stored within the perl executable |
600 | itself it is possible (but unlikely) that the information does not |
601 | relate to the actual perl binary which is being used to access it. |
602 | |
603 | The Config module is installed into the architecture and version |
604 | specific library directory ($Config{installarchlib}) and it checks the |
605 | perl version number when loaded. |
606 | |
435ec615 |
607 | The values stored in config.sh may be either single-quoted or |
608 | double-quoted. Double-quoted strings are handy for those cases where you |
609 | need to include escape sequences in the strings. To avoid runtime variable |
610 | interpolation, any C<$> and C<@> characters are replaced by C<\$> and |
611 | C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$> |
612 | or C<\@> in double-quoted strings unless you're willing to deal with the |
613 | consequences. (The slashes will end up escaped and the C<$> or C<@> will |
614 | trigger variable interpolation) |
615 | |
ebc74a4b |
616 | =head1 GLOSSARY |
617 | |
618 | Most C<Config> variables are determined by the C<Configure> script |
619 | on platforms supported by it (which is most UNIX platforms). Some |
620 | platforms have custom-made C<Config> variables, and may thus not have |
621 | some of the variables described below, or may have extraneous variables |
622 | specific to that particular port. See the port specific documentation |
623 | in such cases. |
624 | |
ebc74a4b |
625 | ENDOFTAIL |
626 | |
5435c704 |
627 | if ($Opts{glossary}) { |
628 | open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!"; |
18f68570 |
629 | } |
2f4f46ad |
630 | my %seen = (); |
631 | my $text = 0; |
fb87c415 |
632 | $/ = ''; |
633 | |
634 | sub process { |
aade5aff |
635 | if (s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m) { |
636 | my $c = substr $1, 0, 1; |
637 | unless ($seen{$c}++) { |
5435c704 |
638 | print CONFIG_POD <<EOF if $text; |
fb87c415 |
639 | =back |
ebc74a4b |
640 | |
fb87c415 |
641 | EOF |
5435c704 |
642 | print CONFIG_POD <<EOF; |
fb87c415 |
643 | =head2 $c |
644 | |
bbc7dcd2 |
645 | =over 4 |
fb87c415 |
646 | |
647 | EOF |
aade5aff |
648 | $text = 1; |
649 | } |
650 | } |
651 | elsif (!$text || !/\A\t/) { |
652 | warn "Expected a Configure variable header", |
653 | ($text ? " or another paragraph of description" : () ); |
fb87c415 |
654 | } |
655 | s/n't/n\00t/g; # leave can't, won't etc untouched |
9b22980b |
656 | s/^\t\s+(.*)/\n$1/gm; # Indented lines ===> new paragraph |
fb87c415 |
657 | s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text |
658 | s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o' |
659 | s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command |
660 | s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s' |
661 | s{ |
662 | (?<! [\w./<\'\"] ) # Only standalone file names |
663 | (?! e \. g \. ) # Not e.g. |
664 | (?! \. \. \. ) # Not ... |
665 | (?! \d ) # Not 5.004 |
a1151a3c |
666 | (?! read/ ) # Not read/write |
667 | (?! etc\. ) # Not etc. |
668 | (?! I/O ) # Not I/O |
669 | ( |
670 | \$ ? # Allow leading $ |
671 | [\w./]* [./] [\w./]* # Require . or / inside |
672 | ) |
673 | (?<! \. (?= [\s)] ) ) # Do not include trailing dot |
fb87c415 |
674 | (?! [\w/] ) # Include all of it |
675 | } |
676 | (F<$1>)xg; # /usr/local |
677 | s/((?<=\s)~\w*)/F<$1>/g; # ~name |
678 | s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD |
679 | s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro |
680 | s/n[\0]t/n't/g; # undo can't, won't damage |
ebc74a4b |
681 | } |
682 | |
5435c704 |
683 | if ($Opts{glossary}) { |
7701ffb5 |
684 | <GLOS>; # Skip the "DO NOT EDIT" |
685 | <GLOS>; # Skip the preamble |
18f68570 |
686 | while (<GLOS>) { |
687 | process; |
5435c704 |
688 | print CONFIG_POD; |
18f68570 |
689 | } |
fb87c415 |
690 | } |
ebc74a4b |
691 | |
5435c704 |
692 | print CONFIG_POD <<'ENDOFTAIL'; |
ebc74a4b |
693 | |
694 | =back |
695 | |
3c81428c |
696 | =head1 NOTE |
697 | |
698 | This module contains a good example of how to use tie to implement a |
699 | cache and an example of how to make a tied variable readonly to those |
700 | outside of it. |
701 | |
702 | =cut |
a0d0e21e |
703 | |
9193ea20 |
704 | ENDOFTAIL |
a0d0e21e |
705 | |
2d9d8159 |
706 | close(CONFIG_HEAVY); |
a0d0e21e |
707 | close(CONFIG); |
ebc74a4b |
708 | close(GLOS); |
5435c704 |
709 | close(CONFIG_POD); |
a0d0e21e |
710 | |
18f68570 |
711 | # Now create Cross.pm if needed |
5435c704 |
712 | if ($Opts{cross}) { |
18f68570 |
713 | open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!"; |
47bcb90d |
714 | my $cross = <<'EOS'; |
715 | # typical invocation: |
716 | # perl -MCross Makefile.PL |
717 | # perl -MCross=wince -V:cc |
718 | package Cross; |
719 | |
720 | sub import { |
721 | my ($package,$platform) = @_; |
722 | unless (defined $platform) { |
723 | # if $platform is not specified, then use last one when |
724 | # 'configpm; was invoked with --cross option |
725 | $platform = '***replace-marker***'; |
726 | } |
727 | @INC = map {/\blib\b/?(do{local $_=$_;s/\blib\b/xlib\/$platform/;$_},$_):($_)} @INC; |
e2a02c1e |
728 | $::Cross::platform = $platform; |
18f68570 |
729 | } |
47bcb90d |
730 | |
18f68570 |
731 | 1; |
732 | EOS |
5435c704 |
733 | $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g; |
47bcb90d |
734 | print CROSS $cross; |
18f68570 |
735 | close CROSS; |
736 | } |
737 | |
a0d0e21e |
738 | # Now do some simple tests on the Config.pm file we have created |
739 | unshift(@INC,'lib'); |
5435c704 |
740 | require $Config_PM; |
a0d0e21e |
741 | import Config; |
742 | |
5435c704 |
743 | die "$0: $Config_PM not valid" |
a02608de |
744 | unless $Config{'PERL_CONFIG_SH'} eq 'true'; |
a0d0e21e |
745 | |
5435c704 |
746 | die "$0: error processing $Config_PM" |
a0d0e21e |
747 | if defined($Config{'an impossible name'}) |
a02608de |
748 | or $Config{'PERL_CONFIG_SH'} ne 'true' # test cache |
a0d0e21e |
749 | ; |
750 | |
5435c704 |
751 | die "$0: error processing $Config_PM" |
a0d0e21e |
752 | if eval '$Config{"cc"} = 1' |
753 | or eval 'delete $Config{"cc"}' |
754 | ; |
755 | |
756 | |
85e6fe83 |
757 | exit 0; |
a8e1d30b |
758 | # Popularity of various entries in %Config, based on a large build and test |
759 | # run of code in the Fotango build system: |
760 | __DATA__ |
761 | path_sep: 8490 |
762 | d_readlink: 7101 |
763 | d_symlink: 7101 |
764 | archlibexp: 4318 |
765 | sitearchexp: 4305 |
766 | sitelibexp: 4305 |
767 | privlibexp: 4163 |
768 | ldlibpthname: 4041 |
769 | libpth: 2134 |
770 | archname: 1591 |
771 | exe_ext: 1256 |
772 | scriptdir: 1155 |
773 | version: 1116 |
774 | useithreads: 1002 |
775 | osvers: 982 |
776 | osname: 851 |
777 | inc_version_list: 783 |
778 | dont_use_nlink: 779 |
779 | intsize: 759 |
780 | usevendorprefix: 642 |
781 | dlsrc: 624 |
782 | cc: 541 |
783 | lib_ext: 520 |
784 | so: 512 |
785 | ld: 501 |
786 | ccdlflags: 500 |
787 | ldflags: 495 |
788 | obj_ext: 495 |
789 | cccdlflags: 493 |
790 | lddlflags: 493 |
791 | ar: 492 |
792 | dlext: 492 |
793 | libc: 492 |
794 | ranlib: 492 |
795 | full_ar: 491 |
796 | vendorarchexp: 491 |
797 | vendorlibexp: 491 |
798 | installman1dir: 489 |
799 | installman3dir: 489 |
800 | installsitebin: 489 |
801 | installsiteman1dir: 489 |
802 | installsiteman3dir: 489 |
803 | installvendorman1dir: 489 |
804 | installvendorman3dir: 489 |
805 | d_flexfnam: 474 |
806 | eunicefix: 360 |
807 | d_link: 347 |
808 | installsitearch: 344 |
809 | installscript: 341 |
810 | installprivlib: 337 |
811 | binexp: 336 |
812 | installarchlib: 336 |
813 | installprefixexp: 336 |
814 | installsitelib: 336 |
815 | installstyle: 336 |
816 | installvendorarch: 336 |
817 | installvendorbin: 336 |
818 | installvendorlib: 336 |
819 | man1ext: 336 |
820 | man3ext: 336 |
821 | sh: 336 |
822 | siteprefixexp: 336 |
823 | installbin: 335 |
824 | usedl: 332 |
825 | ccflags: 285 |
826 | startperl: 232 |
827 | optimize: 231 |
828 | usemymalloc: 229 |
829 | cpprun: 228 |
830 | sharpbang: 228 |
831 | perllibs: 225 |
832 | usesfio: 224 |
833 | usethreads: 220 |
834 | perlpath: 218 |
835 | extensions: 217 |
836 | usesocks: 208 |
837 | shellflags: 198 |
838 | make: 191 |
839 | d_pwage: 189 |
840 | d_pwchange: 189 |
841 | d_pwclass: 189 |
842 | d_pwcomment: 189 |
843 | d_pwexpire: 189 |
844 | d_pwgecos: 189 |
845 | d_pwpasswd: 189 |
846 | d_pwquota: 189 |
847 | gccversion: 189 |
848 | libs: 186 |
849 | useshrplib: 186 |
850 | cppflags: 185 |
851 | ptrsize: 185 |
852 | shrpenv: 185 |
853 | static_ext: 185 |
854 | use5005threads: 185 |
855 | uselargefiles: 185 |
856 | alignbytes: 184 |
857 | byteorder: 184 |
858 | ccversion: 184 |
859 | config_args: 184 |
860 | cppminus: 184 |