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MakeMaker sync 5.48_03 -> 5.53_01
[perl5.git] / lib / ExtUtils / Liblist / Kid.pm
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MS
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 5.006;
9# Broken out of MakeMaker from version 4.11
10
11our $VERSION = 1.28_01;
12
13use Config;
14use Cwd 'cwd';
15use File::Basename;
16use File::Spec;
17
18sub ext {
19 if ($^O eq 'VMS') { return &_vms_ext; }
20 elsif($^O eq 'MSWin32') { return &_win32_ext; }
21 else { return &_unix_os2_ext; }
22}
23
24sub _unix_os2_ext {
25 my($self,$potential_libs, $verbose, $give_libs) = @_;
26 if ($^O =~ 'os2' and $Config{perllibs}) {
27 # Dynamic libraries are not transitive, so we may need including
28 # the libraries linked against perl.dll again.
29
30 $potential_libs .= " " if $potential_libs;
31 $potential_libs .= $Config{perllibs};
32 }
33 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
34 warn "Potential libraries are '$potential_libs':\n" if $verbose;
35
36 my($so) = $Config{'so'};
37 my($libs) = $Config{'perllibs'};
38 my $Config_libext = $Config{lib_ext} || ".a";
39
40
41 # compute $extralibs, $bsloadlibs and $ldloadlibs from
42 # $potential_libs
43 # this is a rewrite of Andy Dougherty's extliblist in perl
44
45 my(@searchpath); # from "-L/path" entries in $potential_libs
46 my(@libpath) = split " ", $Config{'libpth'};
47 my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
48 my(@libs, %libs_seen);
49 my($fullname, $thislib, $thispth, @fullname);
50 my($pwd) = cwd(); # from Cwd.pm
51 my($found) = 0;
52
53 foreach $thislib (split ' ', $potential_libs){
54
55 # Handle possible linker path arguments.
56 if ($thislib =~ s/^(-[LR]|-Wl,-R)//){ # save path flag type
57 my($ptype) = $1;
58 unless (-d $thislib){
59 warn "$ptype$thislib ignored, directory does not exist\n"
60 if $verbose;
61 next;
62 }
63 my($rtype) = $ptype;
64 if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) {
65 if ($Config{'lddlflags'} =~ /-Wl,-R/) {
66 $rtype = '-Wl,-R';
67 } elsif ($Config{'lddlflags'} =~ /-R/) {
68 $rtype = '-R';
69 }
70 }
71 unless (File::Spec->file_name_is_absolute($thislib)) {
72 warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
73 $thislib = $self->catdir($pwd,$thislib);
74 }
75 push(@searchpath, $thislib);
76 push(@extralibs, "$ptype$thislib");
77 push(@ldloadlibs, "$rtype$thislib");
78 next;
79 }
80
81 # Handle possible library arguments.
82 unless ($thislib =~ s/^-l//){
83 warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
84 next;
85 }
86
87 my($found_lib)=0;
88 foreach $thispth (@searchpath, @libpath){
89
90 # Try to find the full name of the library. We need this to
91 # determine whether it's a dynamically-loadable library or not.
92 # This tends to be subject to various os-specific quirks.
93 # For gcc-2.6.2 on linux (March 1995), DLD can not load
94 # .sa libraries, with the exception of libm.sa, so we
95 # deliberately skip them.
96 if (@fullname =
97 $self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){
98 # Take care that libfoo.so.10 wins against libfoo.so.9.
99 # Compare two libraries to find the most recent version
100 # number. E.g. if you have libfoo.so.9.0.7 and
101 # libfoo.so.10.1, first convert all digits into two
102 # decimal places. Then we'll add ".00" to the shorter
103 # strings so that we're comparing strings of equal length
104 # Thus we'll compare libfoo.so.09.07.00 with
105 # libfoo.so.10.01.00. Some libraries might have letters
106 # in the version. We don't know what they mean, but will
107 # try to skip them gracefully -- we'll set any letter to
108 # '0'. Finally, sort in reverse so we can take the
109 # first element.
110
111 #TODO: iterate through the directory instead of sorting
112
113 $fullname = "$thispth/" .
114 (sort { my($ma) = $a;
115 my($mb) = $b;
116 $ma =~ tr/A-Za-z/0/s;
117 $ma =~ s/\b(\d)\b/0$1/g;
118 $mb =~ tr/A-Za-z/0/s;
119 $mb =~ s/\b(\d)\b/0$1/g;
120 while (length($ma) < length($mb)) { $ma .= ".00"; }
121 while (length($mb) < length($ma)) { $mb .= ".00"; }
122 # Comparison deliberately backwards
123 $mb cmp $ma;} @fullname)[0];
124 } elsif (-f ($fullname="$thispth/lib$thislib.$so")
125 && (($Config{'dlsrc'} ne "dl_dld.xs") || ($thislib eq "m"))){
126 } elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext")
127 && (! $Config{'archname'} =~ /RM\d\d\d-svr4/)
128 && ($thislib .= "_s") ){ # we must explicitly use _s version
129 } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
130 } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
131 } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
132 } elsif ($^O eq 'dgux'
133 && -l ($fullname="$thispth/lib$thislib$Config_libext")
134 && readlink($fullname) =~ /^elink:/s) {
135 # Some of DG's libraries look like misconnected symbolic
136 # links, but development tools can follow them. (They
137 # look like this:
138 #
139 # libm.a -> elink:${SDE_PATH:-/usr}/sde/\
140 # ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
141 #
142 # , the compilation tools expand the environment variables.)
143 } else {
144 warn "$thislib not found in $thispth\n" if $verbose;
145 next;
146 }
147 warn "'-l$thislib' found at $fullname\n" if $verbose;
148 my($fullnamedir) = dirname($fullname);
149 push @ld_run_path, $fullnamedir
150 unless $ld_run_path_seen{$fullnamedir}++;
151 push @libs, $fullname unless $libs_seen{$fullname}++;
152 $found++;
153 $found_lib++;
154
155 # Now update library lists
156
157 # what do we know about this library...
158 my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/);
159 my $in_perl = ($libs =~ /\B-l\Q$ {thislib}\E\b/s);
160
161 # Do not add it into the list if it is already linked in
162 # with the main perl executable.
163 # We have to special-case the NeXT, because math and ndbm
164 # are both in libsys_s
165 unless ($in_perl ||
166 ($Config{'osname'} eq 'next' &&
167 ($thislib eq 'm' || $thislib eq 'ndbm')) ){
168 push(@extralibs, "-l$thislib");
169 }
170
171 # We might be able to load this archive file dynamically
172 if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
173 || ($Config{'dlsrc'} =~ /dl_dld/) )
174 {
175 # We push -l$thislib instead of $fullname because
176 # it avoids hardwiring a fixed path into the .bs file.
177 # Mkbootstrap will automatically add dl_findfile() to
178 # the .bs file if it sees a name in the -l format.
179 # USE THIS, when dl_findfile() is fixed:
180 # push(@bsloadlibs, "-l$thislib");
181 # OLD USE WAS while checking results against old_extliblist
182 push(@bsloadlibs, "$fullname");
183 } else {
184 if ($is_dyna){
185 # For SunOS4, do not add in this shared library if
186 # it is already linked in the main perl executable
187 push(@ldloadlibs, "-l$thislib")
188 unless ($in_perl and $^O eq 'sunos');
189 } else {
190 push(@ldloadlibs, "-l$thislib");
191 }
192 }
193 last; # found one here so don't bother looking further
194 }
195 warn "Note (probably harmless): "
196 ."No library found for -l$thislib\n"
197 unless $found_lib>0;
198 }
199
200 unless( $found ) {
201 return ('','','','', ($give_libs ? \@libs : ()));
202 }
203 else {
204 return ("@extralibs", "@bsloadlibs", "@ldloadlibs",
205 join(":",@ld_run_path), ($give_libs ? \@libs : ()));
206 }
207}
208
209sub _win32_ext {
210
211 require Text::ParseWords;
212
213 my($self, $potential_libs, $verbose, $give_libs) = @_;
214
215 # If user did not supply a list, we punt.
216 # (caller should probably use the list in $Config{libs})
217 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
218
219 my $cc = $Config{cc};
220 my $VC = 1 if $cc =~ /^cl/i;
221 my $BC = 1 if $cc =~ /^bcc/i;
222 my $GC = 1 if $cc =~ /^gcc/i;
223 my $so = $Config{'so'};
224 my $libs = $Config{'perllibs'};
225 my $libpth = $Config{'libpth'};
226 my $libext = $Config{'lib_ext'} || ".lib";
227 my(@libs, %libs_seen);
228
229 if ($libs and $potential_libs !~ /:nodefault/i) {
230 # If Config.pm defines a set of default libs, we always
231 # tack them on to the user-supplied list, unless the user
232 # specified :nodefault
233
234 $potential_libs .= " " if $potential_libs;
235 $potential_libs .= $libs;
236 }
237 warn "Potential libraries are '$potential_libs':\n" if $verbose;
238
239 # normalize to forward slashes
240 $libpth =~ s,\\,/,g;
241 $potential_libs =~ s,\\,/,g;
242
243 # compute $extralibs from $potential_libs
244
245 my @searchpath; # from "-L/path" in $potential_libs
246 my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth);
247 my @extralibs;
248 my $pwd = cwd(); # from Cwd.pm
249 my $lib = '';
250 my $found = 0;
251 my $search = 1;
252 my($fullname, $thislib, $thispth);
253
254 # add "$Config{installarchlib}/CORE" to default search path
255 push @libpath, "$Config{installarchlib}/CORE";
256
257 if ($VC and exists $ENV{LIB} and $ENV{LIB}) {
258 push @libpath, split /;/, $ENV{LIB};
259 }
260
261 foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){
262
263 $thislib = $_;
264
265 # see if entry is a flag
266 if (/^:\w+$/) {
267 $search = 0 if lc eq ':nosearch';
268 $search = 1 if lc eq ':search';
269 warn "Ignoring unknown flag '$thislib'\n"
270 if $verbose and !/^:(no)?(search|default)$/i;
271 next;
272 }
273
274 # if searching is disabled, do compiler-specific translations
275 unless ($search) {
276 s/^-l(.+)$/$1.lib/ unless $GC;
277 s/^-L/-libpath:/ if $VC;
278 push(@extralibs, $_);
279 $found++;
280 next;
281 }
282
283 # handle possible linker path arguments
284 if (s/^-L// and not -d) {
285 warn "$thislib ignored, directory does not exist\n"
286 if $verbose;
287 next;
288 }
289 elsif (-d) {
290 unless (File::Spec->file_name_is_absolute($_)) {
291 warn "Warning: '$thislib' changed to '-L$pwd/$_'\n";
292 $_ = $self->catdir($pwd,$_);
293 }
294 push(@searchpath, $_);
295 next;
296 }
297
298 # handle possible library arguments
299 if (s/^-l// and $GC and !/^lib/i) {
300 $_ = "lib$_";
301 }
302 $_ .= $libext if !/\Q$libext\E$/i;
303
304 my $secondpass = 0;
305 LOOKAGAIN:
306
307 # look for the file itself
308 if (-f) {
309 warn "'$thislib' found as '$_'\n" if $verbose;
310 $found++;
311 push(@extralibs, $_);
312 next;
313 }
314
315 my $found_lib = 0;
316 foreach $thispth (@searchpath, @libpath){
317 unless (-f ($fullname="$thispth\\$_")) {
318 warn "'$thislib' not found as '$fullname'\n" if $verbose;
319 next;
320 }
321 warn "'$thislib' found as '$fullname'\n" if $verbose;
322 $found++;
323 $found_lib++;
324 push(@extralibs, $fullname);
325 push @libs, $fullname unless $libs_seen{$fullname}++;
326 last;
327 }
328
329 # do another pass with (or without) leading 'lib' if they used -l
330 if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) {
331 if ($GC) {
332 goto LOOKAGAIN if s/^lib//i;
333 }
334 elsif (!/^lib/i) {
335 $_ = "lib$_";
336 goto LOOKAGAIN;
337 }
338 }
339
340 # give up
341 warn "Note (probably harmless): "
342 ."No library found for '$thislib'\n"
343 unless $found_lib>0;
344
345 }
346
347 return ('','','','', ($give_libs ? \@libs : ())) unless $found;
348
349 # make sure paths with spaces are properly quoted
350 @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
351 @libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs;
352 $lib = join(' ',@extralibs);
353
354 # normalize back to backward slashes (to help braindead tools)
355 # XXX this may break equally braindead GNU tools that don't understand
356 # backslashes, either. Seems like one can't win here. Cursed be CP/M.
357 $lib =~ s,/,\\,g;
358
359 warn "Result: $lib\n" if $verbose;
360 wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib;
361}
362
363
364sub _vms_ext {
365 my($self, $potential_libs,$verbose,$give_libs) = @_;
366 my(@crtls,$crtlstr);
367 my($dbgqual) = $self->{OPTIMIZE} || $Config{'optimize'} ||
368 $self->{CCFLAS} || $Config{'ccflags'};
369 @crtls = ( ($dbgqual =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
370 . 'PerlShr/Share' );
371 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
372 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
373 # In general, we pass through the basic libraries from %Config unchanged.
374 # The one exception is that if we're building in the Perl source tree, and
375 # a library spec could be resolved via a logical name, we go to some trouble
376 # to insure that the copy in the local tree is used, rather than one to
377 # which a system-wide logical may point.
378 if ($self->{PERL_SRC}) {
379 my($lib,$locspec,$type);
380 foreach $lib (@crtls) {
381 if (($locspec,$type) = $lib =~ m-^([\w$\-]+)(/\w+)?- and $locspec =~ /perl/i) {
382 if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; }
383 elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
384 else { $locspec .= $Config{'obj_ext'}; }
385 $locspec = $self->catfile($self->{PERL_SRC},$locspec);
386 $lib = "$locspec$type" if -e $locspec;
387 }
388 }
389 }
390 $crtlstr = @crtls ? join(' ',@crtls) : '';
391
392 unless ($potential_libs) {
393 warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
394 return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
395 }
396
397 my(@dirs,@libs,$dir,$lib,%found,@fndlibs,$ldlib);
398 my $cwd = cwd();
399 my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
400 # List of common Unix library names and there VMS equivalents
401 # (VMS equivalent of '' indicates that the library is automatially
402 # searched by the linker, and should be skipped here.)
403 my(@flibs, %libs_seen);
404 my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
405 'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
406 'socket' => '', 'X11' => 'DECW$XLIBSHR',
407 'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
408 'Xmu' => 'DECW$XMULIBSHR');
409 if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
410
411 warn "Potential libraries are '$potential_libs'\n" if $verbose;
412
413 # First, sort out directories and library names in the input
414 foreach $lib (split ' ',$potential_libs) {
415 push(@dirs,$1), next if $lib =~ /^-L(.*)/;
416 push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
417 push(@dirs,$lib), next if -d $lib;
418 push(@libs,$1), next if $lib =~ /^-l(.*)/;
419 push(@libs,$lib);
420 }
421 push(@dirs,split(' ',$Config{'libpth'}));
422
423 # Now make sure we've got VMS-syntax absolute directory specs
424 # (We don't, however, check whether someone's hidden a relative
425 # path in a logical name.)
426 foreach $dir (@dirs) {
427 unless (-d $dir) {
428 warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
429 $dir = '';
430 next;
431 }
432 warn "Resolving directory $dir\n" if $verbose;
433 if (File::Spec->file_name_is_absolute($dir)) {
434 $dir = $self->fixpath($dir,1);
435 }
436 else {
437 $dir = $self->catdir($cwd,$dir);
438 }
439 }
440 @dirs = grep { length($_) } @dirs;
441 unshift(@dirs,''); # Check each $lib without additions first
442
443 LIB: foreach $lib (@libs) {
444 if (exists $libmap{$lib}) {
445 next unless length $libmap{$lib};
446 $lib = $libmap{$lib};
447 }
448
449 my(@variants,$variant,$name,$test,$cand);
450 my($ctype) = '';
451
452 # If we don't have a file type, consider it a possibly abbreviated name and
453 # check for common variants. We try these first to grab libraries before
454 # a like-named executable image (e.g. -lperl resolves to perlshr.exe
455 # before perl.exe).
456 if ($lib !~ /\.[^:>\]]*$/) {
457 push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
458 push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
459 }
460 push(@variants,$lib);
461 warn "Looking for $lib\n" if $verbose;
462 foreach $variant (@variants) {
463 foreach $dir (@dirs) {
464 my($type);
465
466 $name = "$dir$variant";
467 warn "\tChecking $name\n" if $verbose > 2;
468 if (-f ($test = VMS::Filespec::rmsexpand($name))) {
469 # It's got its own suffix, so we'll have to figure out the type
470 if ($test =~ /(?:$so|exe)$/i) { $type = 'SHR'; }
471 elsif ($test =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; }
472 elsif ($test =~ /(?:$obj_ext|obj)$/i) {
473 warn "Note (probably harmless): "
474 ."Plain object file $test found in library list\n";
475 $type = 'OBJ';
476 }
477 else {
478 warn "Note (probably harmless): "
479 ."Unknown library type for $test; assuming shared\n";
480 $type = 'SHR';
481 }
482 }
483 elsif (-f ($test = VMS::Filespec::rmsexpand($name,$so)) or
484 -f ($test = VMS::Filespec::rmsexpand($name,'.exe'))) {
485 $type = 'SHR';
486 $name = $test unless $test =~ /exe;?\d*$/i;
487 }
488 elsif (not length($ctype) and # If we've got a lib already, don't bother
489 ( -f ($test = VMS::Filespec::rmsexpand($name,$lib_ext)) or
490 -f ($test = VMS::Filespec::rmsexpand($name,'.olb')))) {
491 $type = 'OLB';
492 $name = $test unless $test =~ /olb;?\d*$/i;
493 }
494 elsif (not length($ctype) and # If we've got a lib already, don't bother
495 ( -f ($test = VMS::Filespec::rmsexpand($name,$obj_ext)) or
496 -f ($test = VMS::Filespec::rmsexpand($name,'.obj')))) {
497 warn "Note (probably harmless): "
498 ."Plain object file $test found in library list\n";
499 $type = 'OBJ';
500 $name = $test unless $test =~ /obj;?\d*$/i;
501 }
502 if (defined $type) {
503 $ctype = $type; $cand = $name;
504 last if $ctype eq 'SHR';
505 }
506 }
507 if ($ctype) {
508 # This has to precede any other CRTLs, so just make it first
509 if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }
510 else { push @{$found{$ctype}}, $cand; }
511 warn "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1;
512 push @flibs, $name unless $libs_seen{$fullname}++;
513 next LIB;
514 }
515 }
516 warn "Note (probably harmless): "
517 ."No library found for $lib\n";
518 }
519
520 push @fndlibs, @{$found{OBJ}} if exists $found{OBJ};
521 push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
522 push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR};
523 $lib = join(' ',@fndlibs);
524
525 $ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
526 warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
527 wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
528}
529
5301;