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/cvs/staticperl/perl/lib/ExtUtils/Liblist/Kid.pm
Revision: 1.1
Committed: Thu Jun 30 14:27:11 2005 UTC (21 years, 4 months ago) by root
Branch: MAIN
CVS Tags: PERL-5-8-7, HEAD
Branch point for: PERL
Log Message:
*** empty log message ***

File Contents

# User Rev Content
1 root 1.1 package 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     # $self is not a Makemaker.
7    
8     use 5.00503;
9     # Broken out of MakeMaker from version 4.11
10    
11     use strict;
12     use vars qw($VERSION);
13     $VERSION = 1.30_01;
14    
15     use Config;
16     use Cwd 'cwd';
17     use File::Basename;
18     use File::Spec;
19    
20     sub ext {
21     if ($^O eq 'VMS') { return &_vms_ext; }
22     elsif($^O eq 'MSWin32') { return &_win32_ext; }
23     else { return &_unix_os2_ext; }
24     }
25    
26     sub _unix_os2_ext {
27     my($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/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;
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/);
160     my $in_perl = ($libs =~ /\B-l\Q${thislib}\E\b/s);
161    
162     # include the path to the lib once in the dynamic linker path
163     # but only if it is a dynamic lib and not in Perl itself
164     my($fullnamedir) = dirname($fullname);
165     push @ld_run_path, $fullnamedir
166     if $is_dyna && !$in_perl &&
167     !$ld_run_path_seen{$fullnamedir}++;
168    
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), ($give_libs ? \@libs : ()));
214     }
215     }
216    
217     sub _win32_ext {
218    
219     require Text::ParseWords;
220    
221     my($self, $potential_libs, $verbose, $give_libs) = @_;
222     $verbose ||= 0;
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};
229     my $VC = $cc =~ /^cl/i;
230     my $BC = $cc =~ /^bcc/i;
231     my $GC = $cc =~ /^gcc/i;
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 $search = 1;
261     my($fullname, $thislib, $thispth);
262    
263     # add "$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    
272     $thislib = $_;
273    
274     # see if entry is a flag
275     if (/^:\w+$/) {
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;
325     foreach $thispth (@searchpath, @libpath){
326     unless (-f ($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): "
351     ."No library found for $thislib\n"
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 : ())) : $lib;
370     }
371    
372    
373     sub _vms_ext {
374     my($self, $potential_libs,$verbose,$give_libs) = @_;
375     $verbose ||= 0;
376    
377     my(@crtls,$crtlstr);
378     my($dbgqual) = $self->{OPTIMIZE} || $Config{'optimize'} ||
379     $self->{CCFLAGS} || $Config{'ccflags'};
380     @crtls = ( ($dbgqual =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
381     . 'PerlShr/Share' );
382     push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
383     push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
384     # In general, we pass through the basic libraries from %Config unchanged.
385     # The one exception is that if we're building in the Perl source tree, and
386     # a library spec could be resolved via a logical name, we go to some trouble
387     # to insure that the copy in the local tree is used, rather than one to
388     # which a system-wide logical may point.
389     if ($self->{PERL_SRC}) {
390     my($lib,$locspec,$type);
391     foreach $lib (@crtls) {
392     if (($locspec,$type) = $lib =~ m-^([\w$\-]+)(/\w+)?- and $locspec =~ /perl/i) {
393     if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; }
394     elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
395     else { $locspec .= $Config{'obj_ext'}; }
396     $locspec = $self->catfile($self->{PERL_SRC},$locspec);
397     $lib = "$locspec$type" if -e $locspec;
398     }
399     }
400     }
401     $crtlstr = @crtls ? join(' ',@crtls) : '';
402    
403     unless ($potential_libs) {
404     warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
405     return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
406     }
407    
408     my(@dirs,@libs,$dir,$lib,%found,@fndlibs,$ldlib);
409     my $cwd = cwd();
410     my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
411     # List of common Unix library names and their VMS equivalents
412     # (VMS equivalent of '' indicates that the library is automatically
413     # searched by the linker, and should be skipped here.)
414     my(@flibs, %libs_seen);
415     my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
416     'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
417     'socket' => '', 'X11' => 'DECW$XLIBSHR',
418     'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
419     'Xmu' => 'DECW$XMULIBSHR');
420     if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
421    
422     warn "Potential libraries are '$potential_libs'\n" if $verbose;
423    
424     # First, sort out directories and library names in the input
425     foreach $lib (split ' ',$potential_libs) {
426     push(@dirs,$1), next if $lib =~ /^-L(.*)/;
427     push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
428     push(@dirs,$lib), next if -d $lib;
429     push(@libs,$1), next if $lib =~ /^-l(.*)/;
430     push(@libs,$lib);
431     }
432     push(@dirs,split(' ',$Config{'libpth'}));
433    
434     # Now make sure we've got VMS-syntax absolute directory specs
435     # (We don't, however, check whether someone's hidden a relative
436     # path in a logical name.)
437     foreach $dir (@dirs) {
438     unless (-d $dir) {
439     warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
440     $dir = '';
441     next;
442     }
443     warn "Resolving directory $dir\n" if $verbose;
444     if (File::Spec->file_name_is_absolute($dir)) {
445     $dir = $self->fixpath($dir,1);
446     }
447     else {
448     $dir = $self->catdir($cwd,$dir);
449     }
450     }
451     @dirs = grep { length($_) } @dirs;
452     unshift(@dirs,''); # Check each $lib without additions first
453    
454     LIB: foreach $lib (@libs) {
455     if (exists $libmap{$lib}) {
456     next unless length $libmap{$lib};
457     $lib = $libmap{$lib};
458     }
459    
460     my(@variants,$variant,$cand);
461     my($ctype) = '';
462    
463     # If we don't have a file type, consider it a possibly abbreviated name and
464     # check for common variants. We try these first to grab libraries before
465     # a like-named executable image (e.g. -lperl resolves to perlshr.exe
466     # before perl.exe).
467     if ($lib !~ /\.[^:>\]]*$/) {
468     push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
469     push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
470     }
471     push(@variants,$lib);
472     warn "Looking for $lib\n" if $verbose;
473     foreach $variant (@variants) {
474     my($fullname, $name);
475    
476     foreach $dir (@dirs) {
477     my($type);
478    
479     $name = "$dir$variant";
480     warn "\tChecking $name\n" if $verbose > 2;
481     $fullname = VMS::Filespec::rmsexpand($name);
482     if (defined $fullname and -f $fullname) {
483     # It's got its own suffix, so we'll have to figure out the type
484     if ($fullname =~ /(?:$so|exe)$/i) { $type = 'SHR'; }
485     elsif ($fullname =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; }
486     elsif ($fullname =~ /(?:$obj_ext|obj)$/i) {
487     warn "Note (probably harmless): "
488     ."Plain object file $fullname found in library list\n";
489     $type = 'OBJ';
490     }
491     else {
492     warn "Note (probably harmless): "
493     ."Unknown library type for $fullname; assuming shared\n";
494     $type = 'SHR';
495     }
496     }
497     elsif (-f ($fullname = VMS::Filespec::rmsexpand($name,$so)) or
498     -f ($fullname = VMS::Filespec::rmsexpand($name,'.exe'))) {
499     $type = 'SHR';
500     $name = $fullname unless $fullname =~ /exe;?\d*$/i;
501     }
502     elsif (not length($ctype) and # If we've got a lib already,
503     # don't bother
504     ( -f ($fullname = VMS::Filespec::rmsexpand($name,$lib_ext)) or
505     -f ($fullname = VMS::Filespec::rmsexpand($name,'.olb')))) {
506     $type = 'OLB';
507     $name = $fullname unless $fullname =~ /olb;?\d*$/i;
508     }
509     elsif (not length($ctype) and # If we've got a lib already,
510     # don't bother
511     ( -f ($fullname = VMS::Filespec::rmsexpand($name,$obj_ext)) or
512     -f ($fullname = VMS::Filespec::rmsexpand($name,'.obj')))) {
513     warn "Note (probably harmless): "
514     ."Plain object file $fullname found in library list\n";
515     $type = 'OBJ';
516     $name = $fullname unless $fullname =~ /obj;?\d*$/i;
517     }
518     if (defined $type) {
519     $ctype = $type; $cand = $name;
520     last if $ctype eq 'SHR';
521     }
522     }
523     if ($ctype) {
524     # This has to precede any other CRTLs, so just make it first
525     if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }
526     else { push @{$found{$ctype}}, $cand; }
527     warn "\tFound as $cand (really $fullname), type $ctype\n"
528     if $verbose > 1;
529     push @flibs, $name unless $libs_seen{$fullname}++;
530     next LIB;
531     }
532     }
533     warn "Note (probably harmless): "
534     ."No library found for $lib\n";
535     }
536    
537     push @fndlibs, @{$found{OBJ}} if exists $found{OBJ};
538     push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
539     push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR};
540     $lib = join(' ',@fndlibs);
541    
542     $ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
543     warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
544     wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
545     }
546    
547     1;