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Upgrade to ExtUtils-MakeMaker-6.48
[perl5.git] / lib / ExtUtils / Liblist / Kid.pm
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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
a592ba15 8use 5.006;
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9# Broken out of MakeMaker from version 4.11
10
1df8d179 11use strict;
b5b9b385 12our $VERSION = 6.48;
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13
14use Config;
15use Cwd 'cwd';
16use File::Basename;
17use File::Spec;
18
19sub ext {
20 if ($^O eq 'VMS') { return &_vms_ext; }
21 elsif($^O eq 'MSWin32') { return &_win32_ext; }
22 else { return &_unix_os2_ext; }
23}
24
25sub _unix_os2_ext {
26 my($self,$potential_libs, $verbose, $give_libs) = @_;
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27 $verbose ||= 0;
28
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29 if ($^O =~ 'os2' and $Config{perllibs}) {
30 # Dynamic libraries are not transitive, so we may need including
31 # the libraries linked against perl.dll again.
32
33 $potential_libs .= " " if $potential_libs;
34 $potential_libs .= $Config{perllibs};
35 }
36 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
37 warn "Potential libraries are '$potential_libs':\n" if $verbose;
38
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39 my($so) = $Config{so};
40 my($libs) = defined $Config{perllibs} ? $Config{perllibs} : $Config{libs};
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41 my $Config_libext = $Config{lib_ext} || ".a";
42
43
44 # compute $extralibs, $bsloadlibs and $ldloadlibs from
45 # $potential_libs
46 # this is a rewrite of Andy Dougherty's extliblist in perl
47
48 my(@searchpath); # from "-L/path" entries in $potential_libs
49 my(@libpath) = split " ", $Config{'libpth'};
50 my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
51 my(@libs, %libs_seen);
a592ba15 52 my($fullname, @fullname);
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53 my($pwd) = cwd(); # from Cwd.pm
54 my($found) = 0;
55
a592ba15 56 foreach my $thislib (split ' ', $potential_libs) {
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57
58 # Handle possible linker path arguments.
59 if ($thislib =~ s/^(-[LR]|-Wl,-R)//){ # save path flag type
60 my($ptype) = $1;
61 unless (-d $thislib){
62 warn "$ptype$thislib ignored, directory does not exist\n"
63 if $verbose;
64 next;
65 }
66 my($rtype) = $ptype;
67 if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) {
68 if ($Config{'lddlflags'} =~ /-Wl,-R/) {
69 $rtype = '-Wl,-R';
70 } elsif ($Config{'lddlflags'} =~ /-R/) {
71 $rtype = '-R';
72 }
73 }
74 unless (File::Spec->file_name_is_absolute($thislib)) {
75 warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
76 $thislib = $self->catdir($pwd,$thislib);
77 }
78 push(@searchpath, $thislib);
79 push(@extralibs, "$ptype$thislib");
80 push(@ldloadlibs, "$rtype$thislib");
81 next;
82 }
83
84 # Handle possible library arguments.
85 unless ($thislib =~ s/^-l//){
86 warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
87 next;
88 }
89
90 my($found_lib)=0;
a592ba15 91 foreach my $thispth (@searchpath, @libpath) {
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92
93 # Try to find the full name of the library. We need this to
94 # determine whether it's a dynamically-loadable library or not.
95 # This tends to be subject to various os-specific quirks.
96 # For gcc-2.6.2 on linux (March 1995), DLD can not load
97 # .sa libraries, with the exception of libm.sa, so we
98 # deliberately skip them.
99 if (@fullname =
100 $self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){
101 # Take care that libfoo.so.10 wins against libfoo.so.9.
102 # Compare two libraries to find the most recent version
103 # number. E.g. if you have libfoo.so.9.0.7 and
104 # libfoo.so.10.1, first convert all digits into two
105 # decimal places. Then we'll add ".00" to the shorter
106 # strings so that we're comparing strings of equal length
107 # Thus we'll compare libfoo.so.09.07.00 with
108 # libfoo.so.10.01.00. Some libraries might have letters
109 # in the version. We don't know what they mean, but will
110 # try to skip them gracefully -- we'll set any letter to
111 # '0'. Finally, sort in reverse so we can take the
112 # first element.
113
114 #TODO: iterate through the directory instead of sorting
115
116 $fullname = "$thispth/" .
117 (sort { my($ma) = $a;
118 my($mb) = $b;
119 $ma =~ tr/A-Za-z/0/s;
120 $ma =~ s/\b(\d)\b/0$1/g;
121 $mb =~ tr/A-Za-z/0/s;
122 $mb =~ s/\b(\d)\b/0$1/g;
123 while (length($ma) < length($mb)) { $ma .= ".00"; }
124 while (length($mb) < length($ma)) { $mb .= ".00"; }
125 # Comparison deliberately backwards
126 $mb cmp $ma;} @fullname)[0];
127 } elsif (-f ($fullname="$thispth/lib$thislib.$so")
128 && (($Config{'dlsrc'} ne "dl_dld.xs") || ($thislib eq "m"))){
129 } elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext")
2e65e370 130 && ($Config{'archname'} !~ /RM\d\d\d-svr4/)
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131 && ($thislib .= "_s") ){ # we must explicitly use _s version
132 } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
133 } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
dd0810f9 134 } elsif (-f ($fullname="$thispth/lib$thislib.dll$Config_libext")){
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135 } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
136 } elsif ($^O eq 'dgux'
137 && -l ($fullname="$thispth/lib$thislib$Config_libext")
138 && readlink($fullname) =~ /^elink:/s) {
139 # Some of DG's libraries look like misconnected symbolic
140 # links, but development tools can follow them. (They
141 # look like this:
142 #
143 # libm.a -> elink:${SDE_PATH:-/usr}/sde/\
144 # ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
145 #
146 # , the compilation tools expand the environment variables.)
147 } else {
148 warn "$thislib not found in $thispth\n" if $verbose;
149 next;
150 }
151 warn "'-l$thislib' found at $fullname\n" if $verbose;
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152 push @libs, $fullname unless $libs_seen{$fullname}++;
153 $found++;
154 $found_lib++;
155
156 # Now update library lists
157
158 # what do we know about this library...
159 my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/);
479d2113 160 my $in_perl = ($libs =~ /\B-l\Q${thislib}\E\b/s);
f6d6199c 161
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162 # include the path to the lib once in the dynamic linker path
163 # but only if it is a dynamic lib and not in Perl itself
164 my($fullnamedir) = dirname($fullname);
165 push @ld_run_path, $fullnamedir
166 if $is_dyna && !$in_perl &&
167 !$ld_run_path_seen{$fullnamedir}++;
168
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169 # Do not add it into the list if it is already linked in
170 # with the main perl executable.
171 # We have to special-case the NeXT, because math and ndbm
172 # are both in libsys_s
173 unless ($in_perl ||
174 ($Config{'osname'} eq 'next' &&
175 ($thislib eq 'm' || $thislib eq 'ndbm')) ){
176 push(@extralibs, "-l$thislib");
177 }
178
179 # We might be able to load this archive file dynamically
180 if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
181 || ($Config{'dlsrc'} =~ /dl_dld/) )
182 {
183 # We push -l$thislib instead of $fullname because
184 # it avoids hardwiring a fixed path into the .bs file.
185 # Mkbootstrap will automatically add dl_findfile() to
186 # the .bs file if it sees a name in the -l format.
187 # USE THIS, when dl_findfile() is fixed:
188 # push(@bsloadlibs, "-l$thislib");
189 # OLD USE WAS while checking results against old_extliblist
190 push(@bsloadlibs, "$fullname");
191 } else {
192 if ($is_dyna){
193 # For SunOS4, do not add in this shared library if
194 # it is already linked in the main perl executable
195 push(@ldloadlibs, "-l$thislib")
196 unless ($in_perl and $^O eq 'sunos');
197 } else {
198 push(@ldloadlibs, "-l$thislib");
199 }
200 }
201 last; # found one here so don't bother looking further
202 }
203 warn "Note (probably harmless): "
204 ."No library found for -l$thislib\n"
205 unless $found_lib>0;
206 }
207
208 unless( $found ) {
209 return ('','','','', ($give_libs ? \@libs : ()));
210 }
211 else {
212 return ("@extralibs", "@bsloadlibs", "@ldloadlibs",
213 join(":",@ld_run_path), ($give_libs ? \@libs : ()));
214 }
215}
216
217sub _win32_ext {
218
219 require Text::ParseWords;
220
221 my($self, $potential_libs, $verbose, $give_libs) = @_;
479d2113 222 $verbose ||= 0;
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223
224 # If user did not supply a list, we punt.
225 # (caller should probably use the list in $Config{libs})
226 return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
227
228 my $cc = $Config{cc};
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229 my $VC = $cc =~ /^cl/i;
230 my $BC = $cc =~ /^bcc/i;
231 my $GC = $cc =~ /^gcc/i;
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232 my $so = $Config{'so'};
233 my $libs = $Config{'perllibs'};
234 my $libpth = $Config{'libpth'};
235 my $libext = $Config{'lib_ext'} || ".lib";
236 my(@libs, %libs_seen);
237
238 if ($libs and $potential_libs !~ /:nodefault/i) {
239 # If Config.pm defines a set of default libs, we always
240 # tack them on to the user-supplied list, unless the user
241 # specified :nodefault
242
243 $potential_libs .= " " if $potential_libs;
244 $potential_libs .= $libs;
245 }
246 warn "Potential libraries are '$potential_libs':\n" if $verbose;
247
248 # normalize to forward slashes
249 $libpth =~ s,\\,/,g;
250 $potential_libs =~ s,\\,/,g;
251
252 # compute $extralibs from $potential_libs
253
254 my @searchpath; # from "-L/path" in $potential_libs
255 my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth);
256 my @extralibs;
257 my $pwd = cwd(); # from Cwd.pm
258 my $lib = '';
259 my $found = 0;
260 my $search = 1;
a592ba15 261 my($fullname);
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262
263 # add "$Config{installarchlib}/CORE" to default search path
264 push @libpath, "$Config{installarchlib}/CORE";
265
266 if ($VC and exists $ENV{LIB} and $ENV{LIB}) {
267 push @libpath, split /;/, $ENV{LIB};
268 }
269
270 foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){
271
a592ba15 272 my $thislib = $_;
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273
274 # see if entry is a flag
275 if (/^:\w+$/) {
276 $search = 0 if lc eq ':nosearch';
277 $search = 1 if lc eq ':search';
278 warn "Ignoring unknown flag '$thislib'\n"
279 if $verbose and !/^:(no)?(search|default)$/i;
280 next;
281 }
282
283 # if searching is disabled, do compiler-specific translations
284 unless ($search) {
285 s/^-l(.+)$/$1.lib/ unless $GC;
286 s/^-L/-libpath:/ if $VC;
287 push(@extralibs, $_);
288 $found++;
289 next;
290 }
291
292 # handle possible linker path arguments
293 if (s/^-L// and not -d) {
294 warn "$thislib ignored, directory does not exist\n"
295 if $verbose;
296 next;
297 }
298 elsif (-d) {
299 unless (File::Spec->file_name_is_absolute($_)) {
300 warn "Warning: '$thislib' changed to '-L$pwd/$_'\n";
301 $_ = $self->catdir($pwd,$_);
302 }
303 push(@searchpath, $_);
304 next;
305 }
306
307 # handle possible library arguments
308 if (s/^-l// and $GC and !/^lib/i) {
309 $_ = "lib$_";
310 }
311 $_ .= $libext if !/\Q$libext\E$/i;
312
313 my $secondpass = 0;
314 LOOKAGAIN:
315
316 # look for the file itself
317 if (-f) {
318 warn "'$thislib' found as '$_'\n" if $verbose;
319 $found++;
320 push(@extralibs, $_);
321 next;
322 }
323
324 my $found_lib = 0;
a592ba15 325 foreach my $thispth (@searchpath, @libpath){
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326 unless (-f ($fullname="$thispth\\$_")) {
327 warn "'$thislib' not found as '$fullname'\n" if $verbose;
328 next;
329 }
330 warn "'$thislib' found as '$fullname'\n" if $verbose;
331 $found++;
332 $found_lib++;
333 push(@extralibs, $fullname);
334 push @libs, $fullname unless $libs_seen{$fullname}++;
335 last;
336 }
337
338 # do another pass with (or without) leading 'lib' if they used -l
339 if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) {
340 if ($GC) {
341 goto LOOKAGAIN if s/^lib//i;
342 }
343 elsif (!/^lib/i) {
344 $_ = "lib$_";
345 goto LOOKAGAIN;
346 }
347 }
348
349 # give up
350 warn "Note (probably harmless): "
479d2113 351 ."No library found for $thislib\n"
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352 unless $found_lib>0;
353
354 }
355
356 return ('','','','', ($give_libs ? \@libs : ())) unless $found;
357
358 # make sure paths with spaces are properly quoted
359 @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
360 @libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs;
361 $lib = join(' ',@extralibs);
362
363 # normalize back to backward slashes (to help braindead tools)
364 # XXX this may break equally braindead GNU tools that don't understand
365 # backslashes, either. Seems like one can't win here. Cursed be CP/M.
366 $lib =~ s,/,\\,g;
367
368 warn "Result: $lib\n" if $verbose;
369 wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib;
370}
371
372
373sub _vms_ext {
a592ba15 374 my($self, $potential_libs, $verbose, $give_libs) = @_;
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375 $verbose ||= 0;
376
f6d6199c 377 my(@crtls,$crtlstr);
277189c8 378 @crtls = ( ($Config{'ldflags'} =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
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379 . 'PerlShr/Share' );
380 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
381 push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
382 # In general, we pass through the basic libraries from %Config unchanged.
383 # The one exception is that if we're building in the Perl source tree, and
384 # a library spec could be resolved via a logical name, we go to some trouble
385 # to insure that the copy in the local tree is used, rather than one to
386 # which a system-wide logical may point.
387 if ($self->{PERL_SRC}) {
a592ba15
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388 my($locspec,$type);
389 foreach my $lib (@crtls) {
277189c8 390 if (($locspec,$type) = $lib =~ m{^([\w\$-]+)(/\w+)?} and $locspec =~ /perl/i) {
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391 if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; }
392 elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
393 else { $locspec .= $Config{'obj_ext'}; }
394 $locspec = $self->catfile($self->{PERL_SRC},$locspec);
395 $lib = "$locspec$type" if -e $locspec;
396 }
397 }
398 }
399 $crtlstr = @crtls ? join(' ',@crtls) : '';
400
401 unless ($potential_libs) {
402 warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
403 return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
404 }
405
a592ba15 406 my(%found,@fndlibs,$ldlib);
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407 my $cwd = cwd();
408 my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
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409 # List of common Unix library names and their VMS equivalents
410 # (VMS equivalent of '' indicates that the library is automatically
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411 # searched by the linker, and should be skipped here.)
412 my(@flibs, %libs_seen);
413 my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
414 'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
415 'socket' => '', 'X11' => 'DECW$XLIBSHR',
416 'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
417 'Xmu' => 'DECW$XMULIBSHR');
418 if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
419
420 warn "Potential libraries are '$potential_libs'\n" if $verbose;
421
422 # First, sort out directories and library names in the input
a592ba15
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423 my(@dirs, @libs);
424 foreach my $lib (split ' ',$potential_libs) {
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425 push(@dirs,$1), next if $lib =~ /^-L(.*)/;
426 push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
427 push(@dirs,$lib), next if -d $lib;
428 push(@libs,$1), next if $lib =~ /^-l(.*)/;
429 push(@libs,$lib);
430 }
431 push(@dirs,split(' ',$Config{'libpth'}));
432
433 # Now make sure we've got VMS-syntax absolute directory specs
434 # (We don't, however, check whether someone's hidden a relative
435 # path in a logical name.)
a592ba15 436 foreach my $dir (@dirs) {
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437 unless (-d $dir) {
438 warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
439 $dir = '';
440 next;
441 }
442 warn "Resolving directory $dir\n" if $verbose;
443 if (File::Spec->file_name_is_absolute($dir)) {
444 $dir = $self->fixpath($dir,1);
445 }
446 else {
447 $dir = $self->catdir($cwd,$dir);
448 }
449 }
450 @dirs = grep { length($_) } @dirs;
451 unshift(@dirs,''); # Check each $lib without additions first
452
a592ba15 453 LIB: foreach my $lib (@libs) {
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454 if (exists $libmap{$lib}) {
455 next unless length $libmap{$lib};
456 $lib = $libmap{$lib};
457 }
458
a592ba15 459 my(@variants,$cand);
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460 my($ctype) = '';
461
462 # If we don't have a file type, consider it a possibly abbreviated name and
463 # check for common variants. We try these first to grab libraries before
464 # a like-named executable image (e.g. -lperl resolves to perlshr.exe
465 # before perl.exe).
466 if ($lib !~ /\.[^:>\]]*$/) {
467 push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
468 push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
469 }
470 push(@variants,$lib);
471 warn "Looking for $lib\n" if $verbose;
a592ba15 472 foreach my $variant (@variants) {
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473 my($fullname, $name);
474
a592ba15 475 foreach my $dir (@dirs) {
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476 my($type);
477
478 $name = "$dir$variant";
479 warn "\tChecking $name\n" if $verbose > 2;
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480 $fullname = VMS::Filespec::rmsexpand($name);
481 if (defined $fullname and -f $fullname) {
f6d6199c 482 # It's got its own suffix, so we'll have to figure out the type
1df8d179
MS
483 if ($fullname =~ /(?:$so|exe)$/i) { $type = 'SHR'; }
484 elsif ($fullname =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; }
485 elsif ($fullname =~ /(?:$obj_ext|obj)$/i) {
f6d6199c 486 warn "Note (probably harmless): "
1df8d179 487 ."Plain object file $fullname found in library list\n";
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488 $type = 'OBJ';
489 }
490 else {
491 warn "Note (probably harmless): "
1df8d179 492 ."Unknown library type for $fullname; assuming shared\n";
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493 $type = 'SHR';
494 }
495 }
1df8d179
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496 elsif (-f ($fullname = VMS::Filespec::rmsexpand($name,$so)) or
497 -f ($fullname = VMS::Filespec::rmsexpand($name,'.exe'))) {
f6d6199c 498 $type = 'SHR';
1df8d179 499 $name = $fullname unless $fullname =~ /exe;?\d*$/i;
f6d6199c 500 }
1df8d179
MS
501 elsif (not length($ctype) and # If we've got a lib already,
502 # don't bother
503 ( -f ($fullname = VMS::Filespec::rmsexpand($name,$lib_ext)) or
504 -f ($fullname = VMS::Filespec::rmsexpand($name,'.olb')))) {
f6d6199c 505 $type = 'OLB';
1df8d179 506 $name = $fullname unless $fullname =~ /olb;?\d*$/i;
f6d6199c 507 }
1df8d179
MS
508 elsif (not length($ctype) and # If we've got a lib already,
509 # don't bother
510 ( -f ($fullname = VMS::Filespec::rmsexpand($name,$obj_ext)) or
511 -f ($fullname = VMS::Filespec::rmsexpand($name,'.obj')))) {
f6d6199c 512 warn "Note (probably harmless): "
1df8d179 513 ."Plain object file $fullname found in library list\n";
f6d6199c 514 $type = 'OBJ';
1df8d179 515 $name = $fullname unless $fullname =~ /obj;?\d*$/i;
f6d6199c
MS
516 }
517 if (defined $type) {
518 $ctype = $type; $cand = $name;
519 last if $ctype eq 'SHR';
520 }
521 }
522 if ($ctype) {
523 # This has to precede any other CRTLs, so just make it first
524 if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }
525 else { push @{$found{$ctype}}, $cand; }
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MS
526 warn "\tFound as $cand (really $fullname), type $ctype\n"
527 if $verbose > 1;
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528 push @flibs, $name unless $libs_seen{$fullname}++;
529 next LIB;
530 }
531 }
532 warn "Note (probably harmless): "
533 ."No library found for $lib\n";
534 }
535
536 push @fndlibs, @{$found{OBJ}} if exists $found{OBJ};
537 push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
538 push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR};
a592ba15 539 my $lib = join(' ',@fndlibs);
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MS
540
541 $ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
542 warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
543 wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
544}
545
5461;