| 1 | #!./miniperl -w |
| 2 | use strict; |
| 3 | use vars qw(%Config $Config_SH_expanded); |
| 4 | |
| 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} = $1; |
| 15 | } |
| 16 | |
| 17 | # names of things which may need to have slashes changed to double-colons |
| 18 | my %Extensions = map {($_,$_)} |
| 19 | qw(dynamic_ext static_ext extensions known_extensions); |
| 20 | |
| 21 | # allowed opts as well as specifies default and initial values |
| 22 | my %Allowed_Opts = ( |
| 23 | 'cross' => '', # --cross=PLATFORM - crosscompiling for PLATFORM |
| 24 | 'glossary' => 1, # --no-glossary - no glossary file inclusion, |
| 25 | # for compactness |
| 26 | 'heavy' => '', # pathname of the Config_heavy.pl file |
| 27 | ); |
| 28 | |
| 29 | sub opts { |
| 30 | # user specified options |
| 31 | my %given_opts = ( |
| 32 | # --opt=smth |
| 33 | (map {/^--([\-_\w]+)=(.*)$/} @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 '$opt' is not recognized"; |
| 42 | } |
| 43 | @ARGV = grep {!/^--/} @ARGV; |
| 44 | |
| 45 | return %opts; |
| 46 | } |
| 47 | |
| 48 | |
| 49 | my %Opts = opts(); |
| 50 | |
| 51 | my ($Config_PM, $Config_heavy); |
| 52 | my $Glossary = $ARGV[1] || 'Porting/Glossary'; |
| 53 | |
| 54 | if ($Opts{cross}) { |
| 55 | # creating cross-platform config file |
| 56 | mkdir "xlib"; |
| 57 | mkdir "xlib/$Opts{cross}"; |
| 58 | $Config_PM = $ARGV[0] || "xlib/$Opts{cross}/Config.pm"; |
| 59 | } |
| 60 | else { |
| 61 | $Config_PM = $ARGV[0] || 'lib/Config.pm'; |
| 62 | } |
| 63 | if ($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 $Config_PM; |
| 70 | } |
| 71 | |
| 72 | open CONFIG, ">$Config_PM" or die "Can't open $Config_PM: $!\n"; |
| 73 | open CONFIG_HEAVY, ">$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 |
| 84 | |
| 85 | my $myver = sprintf "%vd", $^V; |
| 86 | |
| 87 | printf CONFIG <<'ENDOFBEG', ($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. |
| 90 | |
| 91 | package Config; |
| 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); |
| 97 | |
| 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 | |
| 106 | my %%Export_Cache = map {($_ => 1)} (@Config::EXPORT, @Config::EXPORT_OK); |
| 107 | |
| 108 | our %%Config; |
| 109 | |
| 110 | # Define our own import method to avoid pulling in the full Exporter: |
| 111 | sub import { |
| 112 | my $pkg = shift; |
| 113 | @_ = @Config::EXPORT unless @_; |
| 114 | |
| 115 | my @funcs = grep $_ ne '%%Config', @_; |
| 116 | my $export_Config = @funcs < @_ ? 1 : 0; |
| 117 | |
| 118 | no strict 'refs'; |
| 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} = \&{$func}; |
| 124 | } |
| 125 | |
| 126 | *{"$callpkg\::Config"} = \%%Config if $export_Config; |
| 127 | return; |
| 128 | } |
| 129 | |
| 130 | die "Perl lib version (%s) doesn't match executable version ($])" |
| 131 | unless $^V; |
| 132 | |
| 133 | $^V eq %s |
| 134 | or die "Perl lib version (%s) doesn't match executable version (" . |
| 135 | sprintf("v%%vd",$^V) . ")"; |
| 136 | |
| 137 | ENDOFBEG |
| 138 | |
| 139 | |
| 140 | my @non_v = (); |
| 141 | my @v_others = (); |
| 142 | my $in_v = 0; |
| 143 | my %Data = (); |
| 144 | |
| 145 | |
| 146 | my %seen_quotes; |
| 147 | { |
| 148 | my ($name, $val); |
| 149 | open(CONFIG_SH, 'config.sh') || die "Can't open config.sh: $!"; |
| 150 | while (<CONFIG_SH>) { |
| 151 | next if m:^#!/bin/sh:; |
| 152 | |
| 153 | # Catch PERL_CONFIG_SH=true and PERL_VERSION=n line from Configure. |
| 154 | s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/ or m/^(\w+)='(.*)'$/; |
| 155 | my($k, $v) = ($1, $2); |
| 156 | |
| 157 | # grandfather PATCHLEVEL and SUBVERSION and CONFIG |
| 158 | if ($k) { |
| 159 | if ($k eq 'PERL_VERSION') { |
| 160 | push @v_others, "PATCHLEVEL='$v'\n"; |
| 161 | } |
| 162 | elsif ($k eq 'PERL_SUBVERSION') { |
| 163 | push @v_others, "SUBVERSION='$v'\n"; |
| 164 | } |
| 165 | elsif ($k eq 'PERL_CONFIG_SH') { |
| 166 | push @v_others, "CONFIG='$v'\n"; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | # We can delimit things in config.sh with either ' or ". |
| 171 | unless ($in_v or m/^(\w+)=(['"])(.*\n)/){ |
| 172 | push(@non_v, "#$_"); # not a name='value' line |
| 173 | next; |
| 174 | } |
| 175 | my $quote = $2; |
| 176 | if ($in_v) { |
| 177 | $val .= $_; |
| 178 | } |
| 179 | else { |
| 180 | ($name,$val) = ($1,$3); |
| 181 | } |
| 182 | $in_v = $val !~ /$quote\n/; |
| 183 | next if $in_v; |
| 184 | |
| 185 | s,/,::,g if $Extensions{$name}; |
| 186 | |
| 187 | $val =~ s/$quote\n?\z//; |
| 188 | |
| 189 | my $line = "$name=$quote$val$quote\n"; |
| 190 | push(@v_others, $line); |
| 191 | $seen_quotes{$quote}++; |
| 192 | } |
| 193 | close CONFIG_SH; |
| 194 | } |
| 195 | |
| 196 | # This is somewhat grim, but I want the code for parsing config.sh here and |
| 197 | # now so that I can expand $Config{ivsize} and $Config{ivtype} |
| 198 | |
| 199 | my $fetch_string = <<'EOT'; |
| 200 | |
| 201 | # Search for it in the big string |
| 202 | sub fetch_string { |
| 203 | my($self, $key) = @_; |
| 204 | |
| 205 | EOT |
| 206 | |
| 207 | if ($seen_quotes{'"'}) { |
| 208 | # We need the full ' and " code |
| 209 | $fetch_string .= <<'EOT'; |
| 210 | my $quote_type = "'"; |
| 211 | my $marker = "$key="; |
| 212 | |
| 213 | # Check for the common case, ' delimited |
| 214 | my $start = index($Config_SH_expanded, "\n$marker$quote_type"); |
| 215 | # If that failed, check for " delimited |
| 216 | if ($start == -1) { |
| 217 | $quote_type = '"'; |
| 218 | $start = index($Config_SH_expanded, "\n$marker$quote_type"); |
| 219 | } |
| 220 | EOT |
| 221 | } else { |
| 222 | $fetch_string .= <<'EOT'; |
| 223 | # We only have ' delimted. |
| 224 | my $start = index($Config_SH_expanded, "\n$key=\'"); |
| 225 | EOT |
| 226 | } |
| 227 | $fetch_string .= <<'EOT'; |
| 228 | # Start can never be -1 now, as we've rigged the long string we're |
| 229 | # searching with an initial dummy newline. |
| 230 | return undef if $start == -1; |
| 231 | |
| 232 | $start += length($key) + 3; |
| 233 | |
| 234 | EOT |
| 235 | if (!$seen_quotes{'"'}) { |
| 236 | # Don't need the full ' and " code, or the eval expansion. |
| 237 | $fetch_string .= <<'EOT'; |
| 238 | my $value = substr($Config_SH_expanded, $start, |
| 239 | index($Config_SH_expanded, "'\n", $start) |
| 240 | - $start); |
| 241 | EOT |
| 242 | } else { |
| 243 | $fetch_string .= <<'EOT'; |
| 244 | my $value = substr($Config_SH_expanded, $start, |
| 245 | index($Config_SH_expanded, "$quote_type\n", $start) |
| 246 | - $start); |
| 247 | |
| 248 | # If we had a double-quote, we'd better eval it so escape |
| 249 | # sequences and such can be interpolated. Since the incoming |
| 250 | # value is supposed to follow shell rules and not perl rules, |
| 251 | # we escape any perl variable markers |
| 252 | if ($quote_type eq '"') { |
| 253 | $value =~ s/\$/\\\$/g; |
| 254 | $value =~ s/\@/\\\@/g; |
| 255 | eval "\$value = \"$value\""; |
| 256 | } |
| 257 | EOT |
| 258 | } |
| 259 | $fetch_string .= <<'EOT'; |
| 260 | # So we can say "if $Config{'foo'}". |
| 261 | $value = undef if $value eq 'undef'; |
| 262 | $self->{$key} = $value; # cache it |
| 263 | } |
| 264 | EOT |
| 265 | |
| 266 | eval $fetch_string; |
| 267 | die if $@; |
| 268 | |
| 269 | # Calculation for the keys for byteorder |
| 270 | # This is somewhat grim, but I need to run fetch_string here. |
| 271 | our $Config_SH_expanded = join "\n", '', @v_others; |
| 272 | |
| 273 | my $t = fetch_string ({}, 'ivtype'); |
| 274 | my $s = fetch_string ({}, 'ivsize'); |
| 275 | |
| 276 | # byteorder does exist on its own but we overlay a virtual |
| 277 | # dynamically recomputed value. |
| 278 | |
| 279 | # However, ivtype and ivsize will not vary for sane fat binaries |
| 280 | |
| 281 | my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I'; |
| 282 | |
| 283 | my $byteorder_code; |
| 284 | if ($s == 4 || $s == 8) { |
| 285 | my $list = join ',', reverse(2..$s); |
| 286 | my $format = 'a'x$s; |
| 287 | $byteorder_code = <<"EOT"; |
| 288 | |
| 289 | my \$i = 0; |
| 290 | foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 } |
| 291 | \$i |= ord(1); |
| 292 | our \$byteorder = join('', unpack('$format', pack('$f', \$i))); |
| 293 | EOT |
| 294 | } else { |
| 295 | $byteorder_code = "our \$byteorder = '?'x$s;\n"; |
| 296 | } |
| 297 | |
| 298 | my @need_relocation; |
| 299 | |
| 300 | if (fetch_string({},'userelocatableinc')) { |
| 301 | foreach my $what (qw(archlibexp |
| 302 | privlibexp |
| 303 | sitearchexp |
| 304 | sitelibexp |
| 305 | sitelib_stem |
| 306 | vendorarchexp |
| 307 | vendorlibexp |
| 308 | vendorlib_stem)) { |
| 309 | push @need_relocation, $what if fetch_string({}, $what) =~ m!^\.\.\./!; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | my %need_relocation; |
| 314 | @need_relocation{@need_relocation} = @need_relocation; |
| 315 | |
| 316 | # This can have .../ anywhere: |
| 317 | if (fetch_string({}, 'otherlibdirs') =~ m!\.\.\./!) { |
| 318 | $need_relocation{otherlibdirs} = 'otherlibdirs'; |
| 319 | } |
| 320 | |
| 321 | my $relocation_code = <<'EOT'; |
| 322 | |
| 323 | sub relocate_inc { |
| 324 | my $libdir = shift; |
| 325 | return $libdir unless $libdir =~ s!^\.\.\./!!; |
| 326 | my $prefix = $^X; |
| 327 | if ($prefix =~ s!/[^/]*$!!) { |
| 328 | while ($libdir =~ m!^\.\./!) { |
| 329 | # Loop while $libdir starts "../" and $prefix still has a trailing |
| 330 | # directory |
| 331 | last unless $prefix =~ s!/([^/]+)$!!; |
| 332 | # but bail out if the directory we picked off the end of $prefix is . |
| 333 | # or .. |
| 334 | if ($1 eq '.' or $1 eq '..') { |
| 335 | # Undo! This should be rare, hence code it this way rather than a |
| 336 | # check each time before the s!!! above. |
| 337 | $prefix = "$prefix/$1"; |
| 338 | last; |
| 339 | } |
| 340 | # Remove that leading ../ and loop again |
| 341 | substr ($libdir, 0, 3, ''); |
| 342 | } |
| 343 | $libdir = "$prefix/$libdir"; |
| 344 | } |
| 345 | $libdir; |
| 346 | } |
| 347 | EOT |
| 348 | |
| 349 | if (%need_relocation) { |
| 350 | my $relocations_in_common; |
| 351 | # otherlibdirs only features in the hash |
| 352 | foreach (keys %need_relocation) { |
| 353 | $relocations_in_common++ if $Common{$_}; |
| 354 | } |
| 355 | if ($relocations_in_common) { |
| 356 | print CONFIG $relocation_code; |
| 357 | } else { |
| 358 | print CONFIG_HEAVY $relocation_code; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | print CONFIG_HEAVY @non_v, "\n"; |
| 363 | |
| 364 | # copy config summary format from the myconfig.SH script |
| 365 | print CONFIG_HEAVY "our \$summary = <<'!END!';\n"; |
| 366 | open(MYCONFIG,"<myconfig.SH") || die "open myconfig.SH failed: $!"; |
| 367 | 1 while defined($_ = <MYCONFIG>) && !/^Summary of/; |
| 368 | do { print CONFIG_HEAVY $_ } until !defined($_ = <MYCONFIG>) || /^\s*$/; |
| 369 | close(MYCONFIG); |
| 370 | |
| 371 | print CONFIG_HEAVY "\n!END!\n", <<'EOT'; |
| 372 | my $summary_expanded; |
| 373 | |
| 374 | sub myconfig { |
| 375 | return $summary_expanded if $summary_expanded; |
| 376 | ($summary_expanded = $summary) =~ s{\$(\w+)} |
| 377 | { my $c = $Config::Config{$1}; defined($c) ? $c : 'undef' }ge; |
| 378 | $summary_expanded; |
| 379 | } |
| 380 | |
| 381 | local *_ = \my $a; |
| 382 | $_ = <<'!END!'; |
| 383 | EOT |
| 384 | |
| 385 | print CONFIG_HEAVY join('', sort @v_others), "!END!\n"; |
| 386 | |
| 387 | # Only need the dynamic byteorder code in Config.pm if 'byteorder' is one of |
| 388 | # the precached keys |
| 389 | if ($Common{byteorder}) { |
| 390 | print CONFIG $byteorder_code; |
| 391 | } else { |
| 392 | print CONFIG_HEAVY $byteorder_code; |
| 393 | } |
| 394 | |
| 395 | if (@need_relocation) { |
| 396 | print CONFIG_HEAVY 'foreach my $what (qw(', join (' ', @need_relocation), |
| 397 | ")) {\n", <<'EOT'; |
| 398 | s/^($what=)(['"])(.*?)\2/$1 . $2 . relocate_inc($3) . $2/me; |
| 399 | } |
| 400 | EOT |
| 401 | # Currently it only makes sense to do the ... relocation on Unix, so there's |
| 402 | # no need to emulate the "which separator for this platform" logic in perl.c - |
| 403 | # ':' will always be applicable |
| 404 | if ($need_relocation{otherlibdirs}) { |
| 405 | print CONFIG_HEAVY << 'EOT'; |
| 406 | s{^(otherlibdirs=)(['"])(.*?)\2} |
| 407 | {$1 . $2 . join ':', map {relocate_inc($_)} split ':', $3 . $2}me; |
| 408 | EOT |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | print CONFIG_HEAVY <<'EOT'; |
| 413 | s/(byteorder=)(['"]).*?\2/$1$2$Config::byteorder$2/m; |
| 414 | |
| 415 | my $config_sh_len = length $_; |
| 416 | |
| 417 | our $Config_SH_expanded = "\n$_" . << 'EOVIRTUAL'; |
| 418 | EOT |
| 419 | |
| 420 | foreach my $prefix (qw(ccflags ldflags)) { |
| 421 | my $value = fetch_string ({}, $prefix); |
| 422 | my $withlargefiles = fetch_string ({}, $prefix . "_uselargefiles"); |
| 423 | if (defined $withlargefiles) { |
| 424 | $value =~ s/\Q$withlargefiles\E\b//; |
| 425 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n"; |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | foreach my $prefix (qw(libs libswanted)) { |
| 430 | my $value = fetch_string ({}, $prefix); |
| 431 | my $withlf = fetch_string ({}, 'libswanted_uselargefiles'); |
| 432 | next unless defined $withlf; |
| 433 | my @lflibswanted |
| 434 | = split(' ', fetch_string ({}, 'libswanted_uselargefiles')); |
| 435 | if (@lflibswanted) { |
| 436 | my %lflibswanted; |
| 437 | @lflibswanted{@lflibswanted} = (); |
| 438 | if ($prefix eq 'libs') { |
| 439 | my @libs = grep { /^-l(.+)/ && |
| 440 | not exists $lflibswanted{$1} } |
| 441 | split(' ', fetch_string ({}, 'libs')); |
| 442 | $value = join(' ', @libs); |
| 443 | } else { |
| 444 | my @libswanted = grep { not exists $lflibswanted{$_} } |
| 445 | split(' ', fetch_string ({}, 'libswanted')); |
| 446 | $value = join(' ', @libswanted); |
| 447 | } |
| 448 | } |
| 449 | print CONFIG_HEAVY "${prefix}_nolargefiles='$value'\n"; |
| 450 | } |
| 451 | |
| 452 | print CONFIG_HEAVY "EOVIRTUAL\n"; |
| 453 | |
| 454 | print CONFIG_HEAVY $fetch_string; |
| 455 | |
| 456 | print CONFIG <<'ENDOFEND'; |
| 457 | |
| 458 | sub FETCH { |
| 459 | my($self, $key) = @_; |
| 460 | |
| 461 | # check for cached value (which may be undef so we use exists not defined) |
| 462 | return $self->{$key} if exists $self->{$key}; |
| 463 | |
| 464 | return $self->fetch_string($key); |
| 465 | } |
| 466 | ENDOFEND |
| 467 | |
| 468 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 469 | |
| 470 | my $prevpos = 0; |
| 471 | |
| 472 | sub FIRSTKEY { |
| 473 | $prevpos = 0; |
| 474 | substr($Config_SH_expanded, 1, index($Config_SH_expanded, '=') - 1 ); |
| 475 | } |
| 476 | |
| 477 | sub NEXTKEY { |
| 478 | ENDOFEND |
| 479 | if ($seen_quotes{'"'}) { |
| 480 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 481 | # Find out how the current key's quoted so we can skip to its end. |
| 482 | my $quote = substr($Config_SH_expanded, |
| 483 | index($Config_SH_expanded, "=", $prevpos)+1, 1); |
| 484 | my $pos = index($Config_SH_expanded, qq($quote\n), $prevpos) + 2; |
| 485 | ENDOFEND |
| 486 | } else { |
| 487 | # Just ' quotes, so it's much easier. |
| 488 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 489 | my $pos = index($Config_SH_expanded, qq('\n), $prevpos) + 2; |
| 490 | ENDOFEND |
| 491 | } |
| 492 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 493 | my $len = index($Config_SH_expanded, "=", $pos) - $pos; |
| 494 | $prevpos = $pos; |
| 495 | $len > 0 ? substr($Config_SH_expanded, $pos, $len) : undef; |
| 496 | } |
| 497 | |
| 498 | sub EXISTS { |
| 499 | return 1 if exists($_[0]->{$_[1]}); |
| 500 | |
| 501 | return(index($Config_SH_expanded, "\n$_[1]='") != -1 |
| 502 | ENDOFEND |
| 503 | if ($seen_quotes{'"'}) { |
| 504 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 505 | or index($Config_SH_expanded, "\n$_[1]=\"") != -1 |
| 506 | ENDOFEND |
| 507 | } |
| 508 | print CONFIG_HEAVY <<'ENDOFEND'; |
| 509 | ); |
| 510 | } |
| 511 | |
| 512 | sub STORE { die "\%Config::Config is read-only\n" } |
| 513 | *DELETE = \&STORE; |
| 514 | *CLEAR = \&STORE; |
| 515 | |
| 516 | |
| 517 | sub config_sh { |
| 518 | substr $Config_SH_expanded, 1, $config_sh_len; |
| 519 | } |
| 520 | |
| 521 | sub config_re { |
| 522 | my $re = shift; |
| 523 | return map { chomp; $_ } grep eval{ /^(?:$re)=/ }, split /^/, |
| 524 | $Config_SH_expanded; |
| 525 | } |
| 526 | |
| 527 | sub config_vars { |
| 528 | # implements -V:cfgvar option (see perlrun -V:) |
| 529 | foreach (@_) { |
| 530 | # find optional leading, trailing colons; and query-spec |
| 531 | my ($notag,$qry,$lncont) = m/^(:)?(.*?)(:)?$/; # flags fore and aft, |
| 532 | # map colon-flags to print decorations |
| 533 | my $prfx = $notag ? '': "$qry="; # tag-prefix for print |
| 534 | my $lnend = $lncont ? ' ' : ";\n"; # line ending for print |
| 535 | |
| 536 | # all config-vars are by definition \w only, any \W means regex |
| 537 | if ($qry =~ /\W/) { |
| 538 | my @matches = config_re($qry); |
| 539 | print map "$_$lnend", @matches ? @matches : "$qry: not found" if !$notag; |
| 540 | print map { s/\w+=//; "$_$lnend" } @matches ? @matches : "$qry: not found" if $notag; |
| 541 | } else { |
| 542 | my $v = (exists $Config::Config{$qry}) ? $Config::Config{$qry} |
| 543 | : 'UNKNOWN'; |
| 544 | $v = 'undef' unless defined $v; |
| 545 | print "${prfx}'${v}'$lnend"; |
| 546 | } |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | # Called by the real AUTOLOAD |
| 551 | sub launcher { |
| 552 | undef &AUTOLOAD; |
| 553 | goto \&$Config::AUTOLOAD; |
| 554 | } |
| 555 | |
| 556 | 1; |
| 557 | ENDOFEND |
| 558 | |
| 559 | if ($^O eq 'os2') { |
| 560 | print CONFIG <<'ENDOFSET'; |
| 561 | my %preconfig; |
| 562 | if ($OS2::is_aout) { |
| 563 | my ($value, $v) = $Config_SH_expanded =~ m/^used_aout='(.*)'\s*$/m; |
| 564 | for (split ' ', $value) { |
| 565 | ($v) = $Config_SH_expanded =~ m/^aout_$_='(.*)'\s*$/m; |
| 566 | $preconfig{$_} = $v eq 'undef' ? undef : $v; |
| 567 | } |
| 568 | } |
| 569 | $preconfig{d_fork} = undef unless $OS2::can_fork; # Some funny cases can't |
| 570 | sub TIEHASH { bless {%preconfig} } |
| 571 | ENDOFSET |
| 572 | # Extract the name of the DLL from the makefile to avoid duplication |
| 573 | my ($f) = grep -r, qw(GNUMakefile Makefile); |
| 574 | my $dll; |
| 575 | if (open my $fh, '<', $f) { |
| 576 | while (<$fh>) { |
| 577 | $dll = $1, last if /^PERL_DLL_BASE\s*=\s*(\S*)\s*$/; |
| 578 | } |
| 579 | } |
| 580 | print CONFIG <<ENDOFSET if $dll; |
| 581 | \$preconfig{dll_name} = '$dll'; |
| 582 | ENDOFSET |
| 583 | } else { |
| 584 | print CONFIG <<'ENDOFSET'; |
| 585 | sub TIEHASH { |
| 586 | bless $_[1], $_[0]; |
| 587 | } |
| 588 | ENDOFSET |
| 589 | } |
| 590 | |
| 591 | foreach my $key (keys %Common) { |
| 592 | my $value = fetch_string ({}, $key); |
| 593 | # Is it safe on the LHS of => ? |
| 594 | my $qkey = $key =~ /^[A-Za-z_][A-Za-z0-9_]*$/ ? $key : "'$key'"; |
| 595 | if (defined $value) { |
| 596 | # Quote things for a '' string |
| 597 | $value =~ s!\\!\\\\!g; |
| 598 | $value =~ s!'!\\'!g; |
| 599 | $value = "'$value'"; |
| 600 | if ($key eq 'otherlibdirs') { |
| 601 | $value = "join (':', map {relocate_inc(\$_)} split (':', $value))"; |
| 602 | } elsif ($need_relocation{$key}) { |
| 603 | $value = "relocate_inc($value)"; |
| 604 | } |
| 605 | } else { |
| 606 | $value = "undef"; |
| 607 | } |
| 608 | $Common{$key} = "$qkey => $value"; |
| 609 | } |
| 610 | |
| 611 | if ($Common{byteorder}) { |
| 612 | $Common{byteorder} = 'byteorder => $byteorder'; |
| 613 | } |
| 614 | my $fast_config = join '', map { " $_,\n" } sort values %Common; |
| 615 | |
| 616 | # Sanity check needed to stop an infite loop if Config_heavy.pl fails to define |
| 617 | # &launcher for some reason (eg it got truncated) |
| 618 | print CONFIG sprintf <<'ENDOFTIE', $fast_config; |
| 619 | |
| 620 | sub DESTROY { } |
| 621 | |
| 622 | sub AUTOLOAD { |
| 623 | require 'Config_heavy.pl'; |
| 624 | goto \&launcher unless $Config::AUTOLOAD =~ /launcher$/; |
| 625 | die "&Config::AUTOLOAD failed on $Config::AUTOLOAD"; |
| 626 | } |
| 627 | |
| 628 | # tie returns the object, so the value returned to require will be true. |
| 629 | tie %%Config, 'Config', { |
| 630 | %s}; |
| 631 | ENDOFTIE |
| 632 | |
| 633 | |
| 634 | open(CONFIG_POD, ">lib/Config.pod") or die "Can't open lib/Config.pod: $!"; |
| 635 | print CONFIG_POD <<'ENDOFTAIL'; |
| 636 | =head1 NAME |
| 637 | |
| 638 | Config - access Perl configuration information |
| 639 | |
| 640 | =head1 SYNOPSIS |
| 641 | |
| 642 | use Config; |
| 643 | if ($Config{usethreads}) { |
| 644 | print "has thread support\n" |
| 645 | } |
| 646 | |
| 647 | use Config qw(myconfig config_sh config_vars config_re); |
| 648 | |
| 649 | print myconfig(); |
| 650 | |
| 651 | print config_sh(); |
| 652 | |
| 653 | print config_re(); |
| 654 | |
| 655 | config_vars(qw(osname archname)); |
| 656 | |
| 657 | |
| 658 | =head1 DESCRIPTION |
| 659 | |
| 660 | The Config module contains all the information that was available to |
| 661 | the C<Configure> program at Perl build time (over 900 values). |
| 662 | |
| 663 | Shell variables from the F<config.sh> file (written by Configure) are |
| 664 | stored in the readonly-variable C<%Config>, indexed by their names. |
| 665 | |
| 666 | Values stored in config.sh as 'undef' are returned as undefined |
| 667 | values. The perl C<exists> function can be used to check if a |
| 668 | named variable exists. |
| 669 | |
| 670 | =over 4 |
| 671 | |
| 672 | =item myconfig() |
| 673 | |
| 674 | Returns a textual summary of the major perl configuration values. |
| 675 | See also C<-V> in L<perlrun/Switches>. |
| 676 | |
| 677 | =item config_sh() |
| 678 | |
| 679 | Returns the entire perl configuration information in the form of the |
| 680 | original config.sh shell variable assignment script. |
| 681 | |
| 682 | =item config_re($regex) |
| 683 | |
| 684 | Like config_sh() but returns, as a list, only the config entries who's |
| 685 | names match the $regex. |
| 686 | |
| 687 | =item config_vars(@names) |
| 688 | |
| 689 | Prints to STDOUT the values of the named configuration variable. Each is |
| 690 | printed on a separate line in the form: |
| 691 | |
| 692 | name='value'; |
| 693 | |
| 694 | Names which are unknown are output as C<name='UNKNOWN';>. |
| 695 | See also C<-V:name> in L<perlrun/Switches>. |
| 696 | |
| 697 | =back |
| 698 | |
| 699 | =head1 EXAMPLE |
| 700 | |
| 701 | Here's a more sophisticated example of using %Config: |
| 702 | |
| 703 | use Config; |
| 704 | use strict; |
| 705 | |
| 706 | my %sig_num; |
| 707 | my @sig_name; |
| 708 | unless($Config{sig_name} && $Config{sig_num}) { |
| 709 | die "No sigs?"; |
| 710 | } else { |
| 711 | my @names = split ' ', $Config{sig_name}; |
| 712 | @sig_num{@names} = split ' ', $Config{sig_num}; |
| 713 | foreach (@names) { |
| 714 | $sig_name[$sig_num{$_}] ||= $_; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | print "signal #17 = $sig_name[17]\n"; |
| 719 | if ($sig_num{ALRM}) { |
| 720 | print "SIGALRM is $sig_num{ALRM}\n"; |
| 721 | } |
| 722 | |
| 723 | =head1 WARNING |
| 724 | |
| 725 | Because this information is not stored within the perl executable |
| 726 | itself it is possible (but unlikely) that the information does not |
| 727 | relate to the actual perl binary which is being used to access it. |
| 728 | |
| 729 | The Config module is installed into the architecture and version |
| 730 | specific library directory ($Config{installarchlib}) and it checks the |
| 731 | perl version number when loaded. |
| 732 | |
| 733 | The values stored in config.sh may be either single-quoted or |
| 734 | double-quoted. Double-quoted strings are handy for those cases where you |
| 735 | need to include escape sequences in the strings. To avoid runtime variable |
| 736 | interpolation, any C<$> and C<@> characters are replaced by C<\$> and |
| 737 | C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$> |
| 738 | or C<\@> in double-quoted strings unless you're willing to deal with the |
| 739 | consequences. (The slashes will end up escaped and the C<$> or C<@> will |
| 740 | trigger variable interpolation) |
| 741 | |
| 742 | =head1 GLOSSARY |
| 743 | |
| 744 | Most C<Config> variables are determined by the C<Configure> script |
| 745 | on platforms supported by it (which is most UNIX platforms). Some |
| 746 | platforms have custom-made C<Config> variables, and may thus not have |
| 747 | some of the variables described below, or may have extraneous variables |
| 748 | specific to that particular port. See the port specific documentation |
| 749 | in such cases. |
| 750 | |
| 751 | ENDOFTAIL |
| 752 | |
| 753 | if ($Opts{glossary}) { |
| 754 | open(GLOS, "<$Glossary") or die "Can't open $Glossary: $!"; |
| 755 | } |
| 756 | my %seen = (); |
| 757 | my $text = 0; |
| 758 | $/ = ''; |
| 759 | |
| 760 | sub process { |
| 761 | if (s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m) { |
| 762 | my $c = substr $1, 0, 1; |
| 763 | unless ($seen{$c}++) { |
| 764 | print CONFIG_POD <<EOF if $text; |
| 765 | =back |
| 766 | |
| 767 | EOF |
| 768 | print CONFIG_POD <<EOF; |
| 769 | =head2 $c |
| 770 | |
| 771 | =over 4 |
| 772 | |
| 773 | EOF |
| 774 | $text = 1; |
| 775 | } |
| 776 | } |
| 777 | elsif (!$text || !/\A\t/) { |
| 778 | warn "Expected a Configure variable header", |
| 779 | ($text ? " or another paragraph of description" : () ); |
| 780 | } |
| 781 | s/n't/n\00t/g; # leave can't, won't etc untouched |
| 782 | s/^\t\s+(.*)/\n$1/gm; # Indented lines ===> new paragraph |
| 783 | s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text |
| 784 | s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o' |
| 785 | s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command |
| 786 | s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s' |
| 787 | s{ |
| 788 | (?<! [\w./<\'\"] ) # Only standalone file names |
| 789 | (?! e \. g \. ) # Not e.g. |
| 790 | (?! \. \. \. ) # Not ... |
| 791 | (?! \d ) # Not 5.004 |
| 792 | (?! read/ ) # Not read/write |
| 793 | (?! etc\. ) # Not etc. |
| 794 | (?! I/O ) # Not I/O |
| 795 | ( |
| 796 | \$ ? # Allow leading $ |
| 797 | [\w./]* [./] [\w./]* # Require . or / inside |
| 798 | ) |
| 799 | (?<! \. (?= [\s)] ) ) # Do not include trailing dot |
| 800 | (?! [\w/] ) # Include all of it |
| 801 | } |
| 802 | (F<$1>)xg; # /usr/local |
| 803 | s/((?<=\s)~\w*)/F<$1>/g; # ~name |
| 804 | s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD |
| 805 | s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro |
| 806 | s/n[\0]t/n't/g; # undo can't, won't damage |
| 807 | } |
| 808 | |
| 809 | if ($Opts{glossary}) { |
| 810 | <GLOS>; # Skip the "DO NOT EDIT" |
| 811 | <GLOS>; # Skip the preamble |
| 812 | while (<GLOS>) { |
| 813 | process; |
| 814 | print CONFIG_POD; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | print CONFIG_POD <<'ENDOFTAIL'; |
| 819 | |
| 820 | =back |
| 821 | |
| 822 | =head1 NOTE |
| 823 | |
| 824 | This module contains a good example of how to use tie to implement a |
| 825 | cache and an example of how to make a tied variable readonly to those |
| 826 | outside of it. |
| 827 | |
| 828 | =cut |
| 829 | |
| 830 | ENDOFTAIL |
| 831 | |
| 832 | close(CONFIG_HEAVY); |
| 833 | close(CONFIG); |
| 834 | close(GLOS); |
| 835 | close(CONFIG_POD); |
| 836 | |
| 837 | # Now create Cross.pm if needed |
| 838 | if ($Opts{cross}) { |
| 839 | open CROSS, ">lib/Cross.pm" or die "Can not open >lib/Cross.pm: $!"; |
| 840 | my $cross = <<'EOS'; |
| 841 | # typical invocation: |
| 842 | # perl -MCross Makefile.PL |
| 843 | # perl -MCross=wince -V:cc |
| 844 | package Cross; |
| 845 | |
| 846 | sub import { |
| 847 | my ($package,$platform) = @_; |
| 848 | unless (defined $platform) { |
| 849 | # if $platform is not specified, then use last one when |
| 850 | # 'configpm; was invoked with --cross option |
| 851 | $platform = '***replace-marker***'; |
| 852 | } |
| 853 | @INC = map {/\blib\b/?(do{local $_=$_;s/\blib\b/xlib\/$platform/;$_},$_):($_)} @INC; |
| 854 | $::Cross::platform = $platform; |
| 855 | } |
| 856 | |
| 857 | 1; |
| 858 | EOS |
| 859 | $cross =~ s/\*\*\*replace-marker\*\*\*/$Opts{cross}/g; |
| 860 | print CROSS $cross; |
| 861 | close CROSS; |
| 862 | unshift(@INC,"xlib/$Opts{cross}"); |
| 863 | } |
| 864 | |
| 865 | # Now do some simple tests on the Config.pm file we have created |
| 866 | unshift(@INC,'lib'); |
| 867 | unshift(@INC,'xlib/symbian') if $Opts{cross}; |
| 868 | require $Config_PM; |
| 869 | require $Config_heavy; |
| 870 | import Config; |
| 871 | |
| 872 | die "$0: $Config_PM not valid" |
| 873 | unless $Config{'PERL_CONFIG_SH'} eq 'true'; |
| 874 | |
| 875 | die "$0: error processing $Config_PM" |
| 876 | if defined($Config{'an impossible name'}) |
| 877 | or $Config{'PERL_CONFIG_SH'} ne 'true' # test cache |
| 878 | ; |
| 879 | |
| 880 | die "$0: error processing $Config_PM" |
| 881 | if eval '$Config{"cc"} = 1' |
| 882 | or eval 'delete $Config{"cc"}' |
| 883 | ; |
| 884 | |
| 885 | |
| 886 | exit 0; |
| 887 | # Popularity of various entries in %Config, based on a large build and test |
| 888 | # run of code in the Fotango build system: |
| 889 | __DATA__ |
| 890 | path_sep: 8490 |
| 891 | d_readlink: 7101 |
| 892 | d_symlink: 7101 |
| 893 | archlibexp: 4318 |
| 894 | sitearchexp: 4305 |
| 895 | sitelibexp: 4305 |
| 896 | privlibexp: 4163 |
| 897 | ldlibpthname: 4041 |
| 898 | libpth: 2134 |
| 899 | archname: 1591 |
| 900 | exe_ext: 1256 |
| 901 | scriptdir: 1155 |
| 902 | version: 1116 |
| 903 | useithreads: 1002 |
| 904 | osvers: 982 |
| 905 | osname: 851 |
| 906 | inc_version_list: 783 |
| 907 | dont_use_nlink: 779 |
| 908 | intsize: 759 |
| 909 | usevendorprefix: 642 |
| 910 | dlsrc: 624 |
| 911 | cc: 541 |
| 912 | lib_ext: 520 |
| 913 | so: 512 |
| 914 | ld: 501 |
| 915 | ccdlflags: 500 |
| 916 | ldflags: 495 |
| 917 | obj_ext: 495 |
| 918 | cccdlflags: 493 |
| 919 | lddlflags: 493 |
| 920 | ar: 492 |
| 921 | dlext: 492 |
| 922 | libc: 492 |
| 923 | ranlib: 492 |
| 924 | full_ar: 491 |
| 925 | vendorarchexp: 491 |
| 926 | vendorlibexp: 491 |
| 927 | installman1dir: 489 |
| 928 | installman3dir: 489 |
| 929 | installsitebin: 489 |
| 930 | installsiteman1dir: 489 |
| 931 | installsiteman3dir: 489 |
| 932 | installvendorman1dir: 489 |
| 933 | installvendorman3dir: 489 |
| 934 | d_flexfnam: 474 |
| 935 | eunicefix: 360 |
| 936 | d_link: 347 |
| 937 | installsitearch: 344 |
| 938 | installscript: 341 |
| 939 | installprivlib: 337 |
| 940 | binexp: 336 |
| 941 | installarchlib: 336 |
| 942 | installprefixexp: 336 |
| 943 | installsitelib: 336 |
| 944 | installstyle: 336 |
| 945 | installvendorarch: 336 |
| 946 | installvendorbin: 336 |
| 947 | installvendorlib: 336 |
| 948 | man1ext: 336 |
| 949 | man3ext: 336 |
| 950 | sh: 336 |
| 951 | siteprefixexp: 336 |
| 952 | installbin: 335 |
| 953 | usedl: 332 |
| 954 | ccflags: 285 |
| 955 | startperl: 232 |
| 956 | optimize: 231 |
| 957 | usemymalloc: 229 |
| 958 | cpprun: 228 |
| 959 | sharpbang: 228 |
| 960 | perllibs: 225 |
| 961 | usesfio: 224 |
| 962 | usethreads: 220 |
| 963 | perlpath: 218 |
| 964 | extensions: 217 |
| 965 | usesocks: 208 |
| 966 | shellflags: 198 |
| 967 | make: 191 |
| 968 | d_pwage: 189 |
| 969 | d_pwchange: 189 |
| 970 | d_pwclass: 189 |
| 971 | d_pwcomment: 189 |
| 972 | d_pwexpire: 189 |
| 973 | d_pwgecos: 189 |
| 974 | d_pwpasswd: 189 |
| 975 | d_pwquota: 189 |
| 976 | gccversion: 189 |
| 977 | libs: 186 |
| 978 | useshrplib: 186 |
| 979 | cppflags: 185 |
| 980 | ptrsize: 185 |
| 981 | shrpenv: 185 |
| 982 | static_ext: 185 |
| 983 | use5005threads: 185 |
| 984 | uselargefiles: 185 |
| 985 | alignbytes: 184 |
| 986 | byteorder: 184 |
| 987 | ccversion: 184 |
| 988 | config_args: 184 |
| 989 | cppminus: 184 |