Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | #!./miniperl -w |
2f4f46ad NC |
2 | use strict; |
3 | use vars qw(%Config $Config_SH_expanded); | |
8990e307 | 4 | |
a8e1d30b NC |
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} = $1; | |
15 | } | |
5435c704 NC |
16 | |
17 | # names of things which may need to have slashes changed to double-colons | |
18 | my %Extensions = map {($_,$_)} | |
19 | qw(dynamic_ext static_ext extensions known_extensions); | |
20 | ||
21 | # allowed opts as well as specifies default and initial values | |
22 | my %Allowed_Opts = ( | |
2d9d8159 NC |
23 | 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM |
24 | 'glossary' => 1, # --no-glossary - no glossary file inclusion, | |
5435c704 | 25 | # for compactness |
2d9d8159 | 26 | 'heavy' => '', # pathname of the Config_heavy.pl file |
18f68570 | 27 | ); |
18f68570 | 28 | |
5435c704 NC |
29 | sub opts { |
30 | # user specified options | |
31 | my %given_opts = ( | |
32 | # --opt=smth | |
33 | (map {/^--([\-_\w]+)=(.*)$/} @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 '$opt' is not recognized"; | |
42 | } | |
43 | @ARGV = grep {!/^--/} @ARGV; | |
44 | ||
45 | return %opts; | |
46 | } | |
18f68570 | 47 | |
5435c704 NC |
48 | |
49 | my %Opts = opts(); | |
50 | ||
2d9d8159 | 51 | my ($Config_PM, $Config_heavy); |
5435c704 NC |
52 | my $Glossary = $ARGV[1] || 'Porting/Glossary'; |
53 | ||
54 | if ($Opts{cross}) { | |
18f68570 VK |
55 | # creating cross-platform config file |
56 | mkdir "xlib"; | |
5435c704 NC |
57 | mkdir "xlib/$Opts{cross}"; |
58 | $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm"; | |
18f68570 VK |
59 | } |
60 | else { | |
5435c704 | 61 | $Config_PM = $ARGV[0] || 'lib/Config.pm'; |
18f68570 | 62 | } |
2d9d8159 NC |
63 | if ($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: $!\n"; |
2d9d8159 NC |
73 | open CONFIG_HEAVY, ">$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", $^V; |
a0d0e21e | 86 | |
5435c704 NC |
87 | printf CONFIG <<'ENDOFBEG', ($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 NC |
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 NC |
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 NC |
106 | my %%Export_Cache = map {($_ => 1)} (@Config::EXPORT, @Config::EXPORT_OK); |
107 | ||
108 | our %%Config; | |
e3d0cac0 IZ |
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 MS |
115 | my @funcs = grep $_ ne '%%Config', @_; |
116 | my $export_Config = @funcs < @_ ? 1 : 0; | |
5435c704 | 117 | |
2f4f46ad | 118 | no strict 'refs'; |
a48f8c77 MS |
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} = \&{$func}; | |
124 | } | |
5435c704 | 125 | |
a48f8c77 MS |
126 | *{"$callpkg\::Config"} = \%%Config if $export_Config; |
127 | return; | |
e3d0cac0 IZ |
128 | } |
129 | ||
5435c704 NC |
130 | die "Perl lib version (%s) doesn't match executable version ($])" |
131 | unless $^V; | |
de98c553 | 132 | |
5435c704 | 133 | $^V eq %s |
a48f8c77 MS |
134 | or die "Perl lib version (%s) doesn't match executable version (" . |
135 | sprintf("v%%vd",$^V) . ")"; | |
a0d0e21e | 136 | |
8990e307 LW |
137 | ENDOFBEG |
138 | ||
16d20bd9 | 139 | |
5435c704 NC |
140 | my @non_v = (); |
141 | my @v_fast = (); | |
5435c704 NC |
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 NC |
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 NC |
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 NC |
169 | $start += length($marker) + 2; |
170 | ||
171 | my $value = substr($Config_SH_expanded, $start, | |
172 | index($Config_SH_expanded, "$quote_type\n", $start) | |
173 | - $start); | |
5435c704 NC |
174 | |
175 | # If we had a double-quote, we'd better eval it so escape | |
176 | # sequences and such can be interpolated. Since the incoming | |
177 | # value is supposed to follow shell rules and not perl rules, | |
178 | # we escape any perl variable markers | |
179 | if ($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 $@; | |
a0d0e21e | 193 | |
2f4f46ad NC |
194 | { |
195 | my ($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, $2); |
5435c704 | 203 | |
2000072c | 204 | # grandfather PATCHLEVEL and SUBVERSION and CONFIG |
cceca5ed GS |
205 | if ($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 ($k eq 'PERL_CONFIG_SH') { |
2000072c JH |
213 | push @v_others, "CONFIG='$v'\n"; |
214 | } | |
cceca5ed | 215 | } |
5435c704 | 216 | |
435ec615 HM |
217 | # We can delimit things in config.sh with either ' or ". |
218 | unless ($in_v or m/^(\w+)=(['"])(.*\n)/){ | |
a0d0e21e LW |
219 | push(@non_v, "#$_"); # not a name='value' line |
220 | next; | |
221 | } | |
2f4f46ad | 222 | my $quote = $2; |
5435c704 NC |
223 | if ($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 NC |
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 NC |
243 | } |
244 | close CONFIG_SH; | |
5435c704 | 245 | } |
2f4f46ad | 246 | |
3c81428c | 247 | |
8468119f NC |
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 NC |
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 | $byteorder_code = <<"EOT"; | |
2855b621 | 267 | |
8468119f NC |
268 | my \$i = 0; |
269 | foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 } | |
270 | \$i |= ord(1); | |
2d9d8159 | 271 | our \$byteorder = join('', unpack('$format', pack('$f', \$i))); |
8468119f NC |
272 | EOT |
273 | } else { | |
2d9d8159 | 274 | $byteorder_code = "our \$byteorder = '?'x$s;\n"; |
8468119f NC |
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 EM |
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 EM |
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 NC |
300 | local *_ = \my $a; |
301 | $_ = <<'!END!'; | |
3c81428c | 302 | EOT |
303 | ||
2855b621 NC |
304 | print CONFIG_HEAVY join('', @v_fast, sort @v_others), "!END!\n"; |
305 | ||
306 | # Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of | |
307 | # the precached keys | |
308 | if ($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 NC |
316 | |
317 | my $config_sh_len = length $_; | |
3be00128 | 318 | |
06482b90 | 319 | our $Config_SH_expanded : unique = "\n$_" . << 'EOVIRTUAL'; |
8468119f NC |
320 | EOT |
321 | ||
06482b90 NC |
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 NC |
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 NC |
348 | } |
349 | ||
2d9d8159 | 350 | print CONFIG_HEAVY "EOVIRTUAL\n"; |
06482b90 | 351 | |
2d9d8159 | 352 | print CONFIG_HEAVY $fetch_string; |
06482b90 NC |
353 | |
354 | print CONFIG <<'ENDOFEND'; | |
355 | ||
2d9d8159 | 356 | sub FETCH { |
5435c704 NC |
357 | my($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 NC |
364 | ENDOFEND |
365 | ||
366 | print CONFIG_HEAVY <<'ENDOFEND'; | |
3c81428c | 367 | my $prevpos = 0; |
368 | ||
a0d0e21e LW |
369 | sub FIRSTKEY { |
370 | $prevpos = 0; | |
2ddb7828 | 371 | substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 ); |
a0d0e21e LW |
372 | } |
373 | ||
374 | sub NEXTKEY { | |
435ec615 | 375 | # Find out how the current key's quoted so we can skip to its end. |
3be00128 NC |
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, $len) : undef; |
85e6fe83 | 382 | } |
a0d0e21e | 383 | |
2ddb7828 | 384 | sub EXISTS { |
5435c704 NC |
385 | return 1 if exists($_[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 LW |
390 | } |
391 | ||
3c81428c | 392 | sub STORE { die "\%Config::Config is read-only\n" } |
5435c704 NC |
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 NC |
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 JC |
412 | # map colon-flags to print decorations |
413 | my $prfx = $notag ? '': "$qry="; # tag-prefix for print | |
414 | my $lnend = $lncont ? ' ' : ";\n"; # line ending for print | |
4a305f6a | 415 | |
307dc113 | 416 | # all config-vars are by definition \w only, any \W means regex |
4a305f6a JC |
417 | if ($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 NC |
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 NC |
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 $OS2::can_fork; # Some funny cases can't |
9193ea20 | 450 | sub TIEHASH { bless {%preconfig} } |
451 | ENDOFSET | |
a48f8c77 MS |
452 | # Extract the name of the DLL from the makefile to avoid duplication |
453 | my ($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 $dll; |
30500b05 IZ |
461 | \$preconfig{dll_name} = '$dll'; |
462 | ENDOFSET | |
9193ea20 | 463 | } else { |
a48f8c77 | 464 | print CONFIG <<'ENDOFSET'; |
5435c704 NC |
465 | sub TIEHASH { |
466 | bless $_[1], $_[0]; | |
467 | } | |
9193ea20 | 468 | ENDOFSET |
469 | } | |
470 | ||
a8e1d30b NC |
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 => $value"; | |
484 | } | |
2855b621 NC |
485 | |
486 | if ($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 NC |
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 NC |
505 | ENDOFTIE |
506 | ||
748a9306 | 507 | |
5435c704 NC |
508 | open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!"; |
509 | print CONFIG_POD <<'ENDOFTAIL'; | |
3c81428c | 510 | =head1 NAME |
a0d0e21e | 511 | |
3c81428c | 512 | Config - access Perl configuration information |
513 | ||
514 | =head1 SYNOPSIS | |
515 | ||
516 | use Config; | |
63f18be6 NC |
517 | if ($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 MS |
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 MS |
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 $regex. | |
560 | ||
3c81428c | 561 | =item config_vars(@names) |
562 | ||
563 | Prints to STDOUT the values of the named configuration variable. Each is | |
564 | printed on a separate line in the form: | |
565 | ||
566 | name='value'; | |
567 | ||
568 | Names which are unknown are output as C<name='UNKNOWN';>. | |
569 | See also C<-V:name> in L<perlrun/Switches>. | |
570 | ||
571 | =back | |
572 | ||
573 | =head1 EXAMPLE | |
574 | ||
575 | Here's a more sophisticated example of using %Config: | |
576 | ||
577 | use Config; | |
743c51bc W |
578 | use strict; |
579 | ||
580 | my %sig_num; | |
581 | my @sig_name; | |
582 | unless($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 W |
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 HM |
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 GS |
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 GS |
625 | ENDOFTAIL |
626 | ||
5435c704 NC |
627 | if ($Opts{glossary}) { |
628 | open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!"; | |
18f68570 | 629 | } |
2f4f46ad NC |
630 | my %seen = (); |
631 | my $text = 0; | |
fb87c415 IZ |
632 | $/ = ''; |
633 | ||
634 | sub process { | |
aade5aff YST |
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 IZ |
643 | =head2 $c |
644 | ||
bbc7dcd2 | 645 | =over 4 |
fb87c415 IZ |
646 | |
647 | EOF | |
aade5aff YST |
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 IZ |
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 IZ |
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 RGS |
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 IZ |
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<$1> macro/g; # FILE_cnt macro | |
680 | s/n[\0]t/n't/g; # undo can't, won't damage | |
ebc74a4b GS |
681 | } |
682 | ||
5435c704 | 683 | if ($Opts{glossary}) { |
7701ffb5 JH |
684 | <GLOS>; # Skip the "DO NOT EDIT" |
685 | <GLOS>; # Skip the preamble | |
18f68570 VK |
686 | while (<GLOS>) { |
687 | process; | |
5435c704 | 688 | print CONFIG_POD; |
18f68570 | 689 | } |
fb87c415 | 690 | } |
ebc74a4b | 691 | |
5435c704 | 692 | print CONFIG_POD <<'ENDOFTAIL'; |
ebc74a4b GS |
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 VK |
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 VK |
731 | 1; |
732 | EOS | |
5435c704 | 733 | $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g; |
47bcb90d | 734 | print CROSS $cross; |
18f68570 VK |
735 | close CROSS; |
736 | } | |
737 | ||
a0d0e21e LW |
738 | # Now do some simple tests on the Config.pm file we have created |
739 | unshift(@INC,'lib'); | |
5435c704 | 740 | require $Config_PM; |
a0d0e21e LW |
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 LW |
749 | ; |
750 | ||
5435c704 | 751 | die "$0: error processing $Config_PM" |
a0d0e21e LW |
752 | if eval '$Config{"cc"} = 1' |
753 | or eval 'delete $Config{"cc"}' | |
754 | ; | |
755 | ||
756 | ||
85e6fe83 | 757 | exit 0; |
a8e1d30b NC |
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 |