1package ExtUtils::Liblist::Kid; 2 3# XXX Splitting this out into its own .pm is a temporary solution. 4 5# This kid package is to be used by MakeMaker. It will not work if 6# $self is not a Makemaker. 7 8use 5.00503; 9# Broken out of MakeMaker from version 4.11 10 11use strict; 12use vars qw($VERSION); 13$VERSION = 1.30; 14 15use Config; 16use Cwd 'cwd'; 17use File::Basename; 18use File::Spec; 19 20sub ext { 21 if ($^O eq 'VMS') { return &_vms_ext; } 22 elsif($^O eq 'MSWin32') { return &_win32_ext; } 23 else { return &_unix_os2_ext; } 24} 25 26sub _unix_os2_ext { 27 my($self,$potential_libs, $verbose, $give_libs) = @_; 28 $verbose ||= 0; 29 30 if ($^O =~ 'os2' and $Config{perllibs}) { 31 # Dynamic libraries are not transitive, so we may need including 32 # the libraries linked against perl.dll again. 33 34 $potential_libs .= " " if $potential_libs; 35 $potential_libs .= $Config{perllibs}; 36 } 37 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs; 38 warn "Potential libraries are '$potential_libs':\n" if $verbose; 39 40 my($so) = $Config{so}; 41 my($libs) = defined $Config{perllibs} ? $Config{perllibs} : $Config{libs}; 42 my $Config_libext = $Config{lib_ext} || ".a"; 43 44 45 # compute $extralibs, $bsloadlibs and $ldloadlibs from 46 # $potential_libs 47 # this is a rewrite of Andy Dougherty's extliblist in perl 48 49 my(@searchpath); # from "-L/path" entries in $potential_libs 50 my(@libpath) = split " ", $Config{'libpth'}; 51 my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen); 52 my(@libs, %libs_seen); 53 my($fullname, $thislib, $thispth, @fullname); 54 my($pwd) = cwd(); # from Cwd.pm 55 my($found) = 0; 56 57 foreach $thislib (split ' ', $potential_libs){ 58 59 # Handle possible linker path arguments. 60 if ($thislib =~ s/^(-[LR]|-Wl,-R)//){ # save path flag type 61 my($ptype) = $1; 62 unless (-d $thislib){ 63 warn "$ptype$thislib ignored, directory does not exist\n" 64 if $verbose; 65 next; 66 } 67 my($rtype) = $ptype; 68 if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) { 69 if ($Config{'lddlflags'} =~ /-Wl,-R/) { 70 $rtype = '-Wl,-R'; 71 } elsif ($Config{'lddlflags'} =~ /-R/) { 72 $rtype = '-R'; 73 } 74 } 75 unless (File::Spec->file_name_is_absolute($thislib)) { 76 warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n"; 77 $thislib = $self->catdir($pwd,$thislib); 78 } 79 push(@searchpath, $thislib); 80 push(@extralibs, "$ptype$thislib"); 81 push(@ldloadlibs, "$rtype$thislib"); 82 next; 83 } 84 85 # Handle possible library arguments. 86 unless ($thislib =~ s/^-l//){ 87 warn "Unrecognized argument in LIBS ignored: '$thislib'\n"; 88 next; 89 } 90 91 my($found_lib)=0; 92 foreach $thispth (@searchpath, @libpath){ 93 94 # Try to find the full name of the library. We need this to 95 # determine whether it's a dynamically-loadable library or not. 96 # This tends to be subject to various os-specific quirks. 97 # For gcc-2.6.2 on linux (March 1995), DLD can not load 98 # .sa libraries, with the exception of libm.sa, so we 99 # deliberately skip them. 100 if (@fullname = 101 $self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){ 102 # Take care that libfoo.so.10 wins against libfoo.so.9. 103 # Compare two libraries to find the most recent version 104 # number. E.g. if you have libfoo.so.9.0.7 and 105 # libfoo.so.10.1, first convert all digits into two 106 # decimal places. Then we'll add ".00" to the shorter 107 # strings so that we're comparing strings of equal length 108 # Thus we'll compare libfoo.so.09.07.00 with 109 # libfoo.so.10.01.00. Some libraries might have letters 110 # in the version. We don't know what they mean, but will 111 # try to skip them gracefully -- we'll set any letter to 112 # '0'. Finally, sort in reverse so we can take the 113 # first element. 114 115 #TODO: iterate through the directory instead of sorting 116 117 $fullname = "$thispth/" . 118 (sort { my($ma) = $a; 119 my($mb) = $b; 120 $ma =~ tr/A-Za-z/0/s; 121 $ma =~ s/\b(\d)\b/0$1/g; 122 $mb =~ tr/A-Za-z/0/s; 123 $mb =~ s/\b(\d)\b/0$1/g; 124 while (length($ma) < length($mb)) { $ma .= ".00"; } 125 while (length($mb) < length($ma)) { $mb .= ".00"; } 126 # Comparison deliberately backwards 127 $mb cmp $ma;} @fullname)[0]; 128 } elsif (-f ($fullname="$thispth/lib$thislib.$so") 129 && (($Config{'dlsrc'} ne "dl_dld.xs") || ($thislib eq "m"))){ 130 } elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext") 131 && (! $Config{'archname'} =~ /RM\d\d\d-svr4/) 132 && ($thislib .= "_s") ){ # we must explicitly use _s version 133 } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){ 134 } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){ 135 } elsif (-f ($fullname="$thispth/lib$thislib.dll$Config_libext")){ 136 } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){ 137 } elsif ($^O eq 'dgux' 138 && -l ($fullname="$thispth/lib$thislib$Config_libext") 139 && readlink($fullname) =~ /^elink:/s) { 140 # Some of DG's libraries look like misconnected symbolic 141 # links, but development tools can follow them. (They 142 # look like this: 143 # 144 # libm.a -> elink:${SDE_PATH:-/usr}/sde/\ 145 # ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a 146 # 147 # , the compilation tools expand the environment variables.) 148 } else { 149 warn "$thislib not found in $thispth\n" if $verbose; 150 next; 151 } 152 warn "'-l$thislib' found at $fullname\n" if $verbose; 153 push @libs, $fullname unless $libs_seen{$fullname}++; 154 $found++; 155 $found_lib++; 156 157 # Now update library lists 158 159 # what do we know about this library... 160 my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/); 161 my $in_perl = ($libs =~ /\B-l\Q${thislib}\E\b/s); 162 163 # include the path to the lib once in the dynamic linker path 164 # but only if it is a dynamic lib and not in Perl itself 165 my($fullnamedir) = dirname($fullname); 166 push @ld_run_path, $fullnamedir 167 if $is_dyna && !$in_perl && 168 !$ld_run_path_seen{$fullnamedir}++; 169 170 # Do not add it into the list if it is already linked in 171 # with the main perl executable. 172 # We have to special-case the NeXT, because math and ndbm 173 # are both in libsys_s 174 unless ($in_perl || 175 ($Config{'osname'} eq 'next' && 176 ($thislib eq 'm' || $thislib eq 'ndbm')) ){ 177 push(@extralibs, "-l$thislib"); 178 } 179 180 # We might be able to load this archive file dynamically 181 if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0') 182 || ($Config{'dlsrc'} =~ /dl_dld/) ) 183 { 184 # We push -l$thislib instead of $fullname because 185 # it avoids hardwiring a fixed path into the .bs file. 186 # Mkbootstrap will automatically add dl_findfile() to 187 # the .bs file if it sees a name in the -l format. 188 # USE THIS, when dl_findfile() is fixed: 189 # push(@bsloadlibs, "-l$thislib"); 190 # OLD USE WAS while checking results against old_extliblist 191 push(@bsloadlibs, "$fullname"); 192 } else { 193 if ($is_dyna){ 194 # For SunOS4, do not add in this shared library if 195 # it is already linked in the main perl executable 196 push(@ldloadlibs, "-l$thislib") 197 unless ($in_perl and $^O eq 'sunos'); 198 } else { 199 push(@ldloadlibs, "-l$thislib"); 200 } 201 } 202 last; # found one here so don't bother looking further 203 } 204 warn "Note (probably harmless): " 205 ."No library found for -l$thislib\n" 206 unless $found_lib>0; 207 } 208 209 unless( $found ) { 210 return ('','','','', ($give_libs ? \@libs : ())); 211 } 212 else { 213 return ("@extralibs", "@bsloadlibs", "@ldloadlibs", 214 join(":",@ld_run_path), ($give_libs ? \@libs : ())); 215 } 216} 217 218sub _win32_ext { 219 220 require Text::ParseWords; 221 222 my($self, $potential_libs, $verbose, $give_libs) = @_; 223 $verbose ||= 0; 224 225 # If user did not supply a list, we punt. 226 # (caller should probably use the list in $Config{libs}) 227 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs; 228 229 my $cc = $Config{cc}; 230 my $VC = $cc =~ /^cl/i; 231 my $BC = $cc =~ /^bcc/i; 232 my $GC = $cc =~ /^gcc/i; 233 my $so = $Config{'so'}; 234 my $libs = $Config{'perllibs'}; 235 my $libpth = $Config{'libpth'}; 236 my $libext = $Config{'lib_ext'} || ".lib"; 237 my(@libs, %libs_seen); 238 239 if ($libs and $potential_libs !~ /:nodefault/i) { 240 # If Config.pm defines a set of default libs, we always 241 # tack them on to the user-supplied list, unless the user 242 # specified :nodefault 243 244 $potential_libs .= " " if $potential_libs; 245 $potential_libs .= $libs; 246 } 247 warn "Potential libraries are '$potential_libs':\n" if $verbose; 248 249 # normalize to forward slashes 250 $libpth =~ s,\\,/,g; 251 $potential_libs =~ s,\\,/,g; 252 253 # compute $extralibs from $potential_libs 254 255 my @searchpath; # from "-L/path" in $potential_libs 256 my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth); 257 my @extralibs; 258 my $pwd = cwd(); # from Cwd.pm 259 my $lib = ''; 260 my $found = 0; 261 my $search = 1; 262 my($fullname, $thislib, $thispth); 263 264 # add "$Config{installarchlib}/CORE" to default search path 265 push @libpath, "$Config{installarchlib}/CORE"; 266 267 if ($VC and exists $ENV{LIB} and $ENV{LIB}) { 268 push @libpath, split /;/, $ENV{LIB}; 269 } 270 271 foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){ 272 273 $thislib = $_; 274 275 # see if entry is a flag 276 if (/^:\w+$/) { 277 $search = 0 if lc eq ':nosearch'; 278 $search = 1 if lc eq ':search'; 279 warn "Ignoring unknown flag '$thislib'\n" 280 if $verbose and !/^:(no)?(search|default)$/i; 281 next; 282 } 283 284 # if searching is disabled, do compiler-specific translations 285 unless ($search) { 286 s/^-l(.+)$/$1.lib/ unless $GC; 287 s/^-L/-libpath:/ if $VC; 288 push(@extralibs, $_); 289 $found++; 290 next; 291 } 292 293 # handle possible linker path arguments 294 if (s/^-L// and not -d) { 295 warn "$thislib ignored, directory does not exist\n" 296 if $verbose; 297 next; 298 } 299 elsif (-d) { 300 unless (File::Spec->file_name_is_absolute($_)) { 301 warn "Warning: '$thislib' changed to '-L$pwd/$_'\n"; 302 $_ = $self->catdir($pwd,$_); 303 } 304 push(@searchpath, $_); 305 next; 306 } 307 308 # handle possible library arguments 309 if (s/^-l// and $GC and !/^lib/i) { 310 $_ = "lib$_"; 311 } 312 $_ .= $libext if !/\Q$libext\E$/i; 313 314 my $secondpass = 0; 315 LOOKAGAIN: 316 317 # look for the file itself 318 if (-f) { 319 warn "'$thislib' found as '$_'\n" if $verbose; 320 $found++; 321 push(@extralibs, $_); 322 next; 323 } 324 325 my $found_lib = 0; 326 foreach $thispth (@searchpath, @libpath){ 327 unless (-f ($fullname="$thispth\\$_")) { 328 warn "'$thislib' not found as '$fullname'\n" if $verbose; 329 next; 330 } 331 warn "'$thislib' found as '$fullname'\n" if $verbose; 332 $found++; 333 $found_lib++; 334 push(@extralibs, $fullname); 335 push @libs, $fullname unless $libs_seen{$fullname}++; 336 last; 337 } 338 339 # do another pass with (or without) leading 'lib' if they used -l 340 if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) { 341 if ($GC) { 342 goto LOOKAGAIN if s/^lib//i; 343 } 344 elsif (!/^lib/i) { 345 $_ = "lib$_"; 346 goto LOOKAGAIN; 347 } 348 } 349 350 # give up 351 warn "Note (probably harmless): " 352 ."No library found for $thislib\n" 353 unless $found_lib>0; 354 355 } 356 357 return ('','','','', ($give_libs ? \@libs : ())) unless $found; 358 359 # make sure paths with spaces are properly quoted 360 @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs; 361 @libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs; 362 $lib = join(' ',@extralibs); 363 364 # normalize back to backward slashes (to help braindead tools) 365 # XXX this may break equally braindead GNU tools that don't understand 366 # backslashes, either. Seems like one can't win here. Cursed be CP/M. 367 $lib =~ s,/,\\,g; 368 369 warn "Result: $lib\n" if $verbose; 370 wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib; 371} 372 373 374sub _vms_ext { 375 my($self, $potential_libs,$verbose,$give_libs) = @_; 376 $verbose ||= 0; 377 378 my(@crtls,$crtlstr); 379 my($dbgqual) = $self->{OPTIMIZE} || $Config{'optimize'} || 380 $self->{CCFLAGS} || $Config{'ccflags'}; 381 @crtls = ( ($dbgqual =~ m-/Debug-i ? $Config{'dbgprefix'} : '') 382 . 'PerlShr/Share' ); 383 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'}); 384 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'}); 385 # In general, we pass through the basic libraries from %Config unchanged. 386 # The one exception is that if we're building in the Perl source tree, and 387 # a library spec could be resolved via a logical name, we go to some trouble 388 # to insure that the copy in the local tree is used, rather than one to 389 # which a system-wide logical may point. 390 if ($self->{PERL_SRC}) { 391 my($lib,$locspec,$type); 392 foreach $lib (@crtls) { 393 if (($locspec,$type) = $lib =~ m-^([\w$\-]+)(/\w+)?- and $locspec =~ /perl/i) { 394 if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; } 395 elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; } 396 else { $locspec .= $Config{'obj_ext'}; } 397 $locspec = $self->catfile($self->{PERL_SRC},$locspec); 398 $lib = "$locspec$type" if -e $locspec; 399 } 400 } 401 } 402 $crtlstr = @crtls ? join(' ',@crtls) : ''; 403 404 unless ($potential_libs) { 405 warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose; 406 return ('', '', $crtlstr, '', ($give_libs ? [] : ())); 407 } 408 409 my(@dirs,@libs,$dir,$lib,%found,@fndlibs,$ldlib); 410 my $cwd = cwd(); 411 my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'}; 412 # List of common Unix library names and their VMS equivalents 413 # (VMS equivalent of '' indicates that the library is automatically 414 # searched by the linker, and should be skipped here.) 415 my(@flibs, %libs_seen); 416 my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '', 417 'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '', 418 'socket' => '', 'X11' => 'DECW$XLIBSHR', 419 'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR', 420 'Xmu' => 'DECW$XMULIBSHR'); 421 if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; } 422 423 warn "Potential libraries are '$potential_libs'\n" if $verbose; 424 425 # First, sort out directories and library names in the input 426 foreach $lib (split ' ',$potential_libs) { 427 push(@dirs,$1), next if $lib =~ /^-L(.*)/; 428 push(@dirs,$lib), next if $lib =~ /[:>\]]$/; 429 push(@dirs,$lib), next if -d $lib; 430 push(@libs,$1), next if $lib =~ /^-l(.*)/; 431 push(@libs,$lib); 432 } 433 push(@dirs,split(' ',$Config{'libpth'})); 434 435 # Now make sure we've got VMS-syntax absolute directory specs 436 # (We don't, however, check whether someone's hidden a relative 437 # path in a logical name.) 438 foreach $dir (@dirs) { 439 unless (-d $dir) { 440 warn "Skipping nonexistent Directory $dir\n" if $verbose > 1; 441 $dir = ''; 442 next; 443 } 444 warn "Resolving directory $dir\n" if $verbose; 445 if (File::Spec->file_name_is_absolute($dir)) { 446 $dir = $self->fixpath($dir,1); 447 } 448 else { 449 $dir = $self->catdir($cwd,$dir); 450 } 451 } 452 @dirs = grep { length($_) } @dirs; 453 unshift(@dirs,''); # Check each $lib without additions first 454 455 LIB: foreach $lib (@libs) { 456 if (exists $libmap{$lib}) { 457 next unless length $libmap{$lib}; 458 $lib = $libmap{$lib}; 459 } 460 461 my(@variants,$variant,$cand); 462 my($ctype) = ''; 463 464 # If we don't have a file type, consider it a possibly abbreviated name and 465 # check for common variants. We try these first to grab libraries before 466 # a like-named executable image (e.g. -lperl resolves to perlshr.exe 467 # before perl.exe). 468 if ($lib !~ /\.[^:>\]]*$/) { 469 push(@variants,"${lib}shr","${lib}rtl","${lib}lib"); 470 push(@variants,"lib$lib") if $lib !~ /[:>\]]/; 471 } 472 push(@variants,$lib); 473 warn "Looking for $lib\n" if $verbose; 474 foreach $variant (@variants) { 475 my($fullname, $name); 476 477 foreach $dir (@dirs) { 478 my($type); 479 480 $name = "$dir$variant"; 481 warn "\tChecking $name\n" if $verbose > 2; 482 $fullname = VMS::Filespec::rmsexpand($name); 483 if (defined $fullname and -f $fullname) { 484 # It's got its own suffix, so we'll have to figure out the type 485 if ($fullname =~ /(?:$so|exe)$/i) { $type = 'SHR'; } 486 elsif ($fullname =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; } 487 elsif ($fullname =~ /(?:$obj_ext|obj)$/i) { 488 warn "Note (probably harmless): " 489 ."Plain object file $fullname found in library list\n"; 490 $type = 'OBJ'; 491 } 492 else { 493 warn "Note (probably harmless): " 494 ."Unknown library type for $fullname; assuming shared\n"; 495 $type = 'SHR'; 496 } 497 } 498 elsif (-f ($fullname = VMS::Filespec::rmsexpand($name,$so)) or 499 -f ($fullname = VMS::Filespec::rmsexpand($name,'.exe'))) { 500 $type = 'SHR'; 501 $name = $fullname unless $fullname =~ /exe;?\d*$/i; 502 } 503 elsif (not length($ctype) and # If we've got a lib already, 504 # don't bother 505 ( -f ($fullname = VMS::Filespec::rmsexpand($name,$lib_ext)) or 506 -f ($fullname = VMS::Filespec::rmsexpand($name,'.olb')))) { 507 $type = 'OLB'; 508 $name = $fullname unless $fullname =~ /olb;?\d*$/i; 509 } 510 elsif (not length($ctype) and # If we've got a lib already, 511 # don't bother 512 ( -f ($fullname = VMS::Filespec::rmsexpand($name,$obj_ext)) or 513 -f ($fullname = VMS::Filespec::rmsexpand($name,'.obj')))) { 514 warn "Note (probably harmless): " 515 ."Plain object file $fullname found in library list\n"; 516 $type = 'OBJ'; 517 $name = $fullname unless $fullname =~ /obj;?\d*$/i; 518 } 519 if (defined $type) { 520 $ctype = $type; $cand = $name; 521 last if $ctype eq 'SHR'; 522 } 523 } 524 if ($ctype) { 525 # This has to precede any other CRTLs, so just make it first 526 if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; } 527 else { push @{$found{$ctype}}, $cand; } 528 warn "\tFound as $cand (really $fullname), type $ctype\n" 529 if $verbose > 1; 530 push @flibs, $name unless $libs_seen{$fullname}++; 531 next LIB; 532 } 533 } 534 warn "Note (probably harmless): " 535 ."No library found for $lib\n"; 536 } 537 538 push @fndlibs, @{$found{OBJ}} if exists $found{OBJ}; 539 push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB}; 540 push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR}; 541 $lib = join(' ',@fndlibs); 542 543 $ldlib = $crtlstr ? "$lib $crtlstr" : $lib; 544 warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose; 545 wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib; 546} 547 5481; 549