X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FExtUtils%2FLiblist.pm;h=35966218b4a9864e808c338724d0720c0559d0da;hb=1e65eb70bcb514e61cdd8408bdbe4e5a20b7fd95;hp=48c0ad53ead0b685da0efeb8fdcb9d7456c38f8e;hpb=0a022e8e9f2eec4dde5e31513c787e06f89c8a31;p=p5sagit%2Fp5-mst-13.2.git diff --git a/lib/ExtUtils/Liblist.pm b/lib/ExtUtils/Liblist.pm index 48c0ad5..3596621 100644 --- a/lib/ExtUtils/Liblist.pm +++ b/lib/ExtUtils/Liblist.pm @@ -1,532 +1,28 @@ package ExtUtils::Liblist; -no warnings 'ambiguous'; # silence the -f() file tests. +use strict; -@ISA = qw(ExtUtils::Liblist::Kid File::Spec); - -sub lsdir { - shift; - my $rex = qr/$_[1]/; - opendir my $dir, $_[0]; - grep /$rex/, readdir $dir; -} - -sub file_name_is_absolute { - require File::Spec; - shift; - 'File::Spec'->file_name_is_absolute(@_); -} - - -package ExtUtils::Liblist::Kid; - -# This kid package is to be used by MakeMaker. It will not work if -# $self is not a Makemaker. - -use 5.005_64; -# Broken out of MakeMaker from version 4.11 +use vars qw($VERSION @ISA); +$VERSION = '1.03'; -our $VERSION = substr q$Revision: 1.26 $, 10; - -use Config; -use Cwd 'cwd'; -use File::Basename; +use File::Spec; +require ExtUtils::Liblist::Kid; +@ISA = qw(ExtUtils::Liblist::Kid File::Spec); +# Backwards compatibility with old interface. sub ext { - if ($^O eq 'VMS') { return &_vms_ext; } - elsif($^O eq 'MSWin32') { return &_win32_ext; } - else { return &_unix_os2_ext; } -} - -sub _unix_os2_ext { - my($self,$potential_libs, $verbose, $give_libs) = @_; - if ($^O =~ 'os2' and $Config{perllibs}) { - # Dynamic libraries are not transitive, so we may need including - # the libraries linked against perl.dll again. - - $potential_libs .= " " if $potential_libs; - $potential_libs .= $Config{perllibs}; - } - return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs; - warn "Potential libraries are '$potential_libs':\n" if $verbose; - - my($so) = $Config{'so'}; - my($libs) = $Config{'perllibs'}; - my $Config_libext = $Config{lib_ext} || ".a"; - - - # compute $extralibs, $bsloadlibs and $ldloadlibs from - # $potential_libs - # this is a rewrite of Andy Dougherty's extliblist in perl - - my(@searchpath); # from "-L/path" entries in $potential_libs - my(@libpath) = split " ", $Config{'libpth'}; - my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen); - my(@libs, %libs_seen); - my($fullname, $thislib, $thispth, @fullname); - my($pwd) = cwd(); # from Cwd.pm - my($found) = 0; - - foreach $thislib (split ' ', $potential_libs){ - - # Handle possible linker path arguments. - if ($thislib =~ s/^(-[LR])//){ # save path flag type - my($ptype) = $1; - unless (-d $thislib){ - warn "$ptype$thislib ignored, directory does not exist\n" - if $verbose; - next; - } - unless ($self->file_name_is_absolute($thislib)) { - warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n"; - $thislib = $self->catdir($pwd,$thislib); - } - push(@searchpath, $thislib); - push(@extralibs, "$ptype$thislib"); - push(@ldloadlibs, "$ptype$thislib"); - next; - } - - # Handle possible library arguments. - unless ($thislib =~ s/^-l//){ - warn "Unrecognized argument in LIBS ignored: '$thislib'\n"; - next; - } - - my($found_lib)=0; - foreach $thispth (@searchpath, @libpath){ - - # Try to find the full name of the library. We need this to - # determine whether it's a dynamically-loadable library or not. - # This tends to be subject to various os-specific quirks. - # For gcc-2.6.2 on linux (March 1995), DLD can not load - # .sa libraries, with the exception of libm.sa, so we - # deliberately skip them. - if (@fullname = - $self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){ - # Take care that libfoo.so.10 wins against libfoo.so.9. - # Compare two libraries to find the most recent version - # number. E.g. if you have libfoo.so.9.0.7 and - # libfoo.so.10.1, first convert all digits into two - # decimal places. Then we'll add ".00" to the shorter - # strings so that we're comparing strings of equal length - # Thus we'll compare libfoo.so.09.07.00 with - # libfoo.so.10.01.00. Some libraries might have letters - # in the version. We don't know what they mean, but will - # try to skip them gracefully -- we'll set any letter to - # '0'. Finally, sort in reverse so we can take the - # first element. - - #TODO: iterate through the directory instead of sorting - - $fullname = "$thispth/" . - (sort { my($ma) = $a; - my($mb) = $b; - $ma =~ tr/A-Za-z/0/s; - $ma =~ s/\b(\d)\b/0$1/g; - $mb =~ tr/A-Za-z/0/s; - $mb =~ s/\b(\d)\b/0$1/g; - while (length($ma) < length($mb)) { $ma .= ".00"; } - while (length($mb) < length($ma)) { $mb .= ".00"; } - # Comparison deliberately backwards - $mb cmp $ma;} @fullname)[0]; - } elsif (-f ($fullname="$thispth/lib$thislib.$so") - && (($Config{'dlsrc'} ne "dl_dld.xs") || ($thislib eq "m"))){ - } elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext") - && (! $Config{'archname'} =~ /RM\d\d\d-svr4/) - && ($thislib .= "_s") ){ # we must explicitly use _s version - } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){ - } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){ - } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){ - } elsif ($^O eq 'dgux' - && -l ($fullname="$thispth/lib$thislib$Config_libext") - && readlink($fullname) =~ /^elink:/s) { - # Some of DG's libraries look like misconnected symbolic - # links, but development tools can follow them. (They - # look like this: - # - # libm.a -> elink:${SDE_PATH:-/usr}/sde/\ - # ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a - # - # , the compilation tools expand the environment variables.) - } else { - warn "$thislib not found in $thispth\n" if $verbose; - next; - } - warn "'-l$thislib' found at $fullname\n" if $verbose; - my($fullnamedir) = dirname($fullname); - push @ld_run_path, $fullnamedir unless $ld_run_path_seen{$fullnamedir}++; - push @libs, $fullname unless $libs_seen{$fullname}++; - $found++; - $found_lib++; - - # Now update library lists - - # what do we know about this library... - my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/); - my $in_perl = ($libs =~ /\B-l\Q$ {thislib}\E\b/s); - - # Do not add it into the list if it is already linked in - # with the main perl executable. - # We have to special-case the NeXT, because math and ndbm - # are both in libsys_s - unless ($in_perl || - ($Config{'osname'} eq 'next' && - ($thislib eq 'm' || $thislib eq 'ndbm')) ){ - push(@extralibs, "-l$thislib"); - } - - # We might be able to load this archive file dynamically - if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0') - || ($Config{'dlsrc'} =~ /dl_dld/) ) - { - # We push -l$thislib instead of $fullname because - # it avoids hardwiring a fixed path into the .bs file. - # Mkbootstrap will automatically add dl_findfile() to - # the .bs file if it sees a name in the -l format. - # USE THIS, when dl_findfile() is fixed: - # push(@bsloadlibs, "-l$thislib"); - # OLD USE WAS while checking results against old_extliblist - push(@bsloadlibs, "$fullname"); - } else { - if ($is_dyna){ - # For SunOS4, do not add in this shared library if - # it is already linked in the main perl executable - push(@ldloadlibs, "-l$thislib") - unless ($in_perl and $^O eq 'sunos'); - } else { - push(@ldloadlibs, "-l$thislib"); - } - } - last; # found one here so don't bother looking further - } - warn "Note (probably harmless): " - ."No library found for -l$thislib\n" - unless $found_lib>0; - } - return ('','','','', ($give_libs ? \@libs : ())) unless $found; - ("@extralibs", "@bsloadlibs", "@ldloadlibs",join(":",@ld_run_path), ($give_libs ? \@libs : ())); -} - -sub _win32_ext { - - require Text::ParseWords; - - my($self, $potential_libs, $verbose, $give_libs) = @_; - - # If user did not supply a list, we punt. - # (caller should probably use the list in $Config{libs}) - return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs; - - my $cc = $Config{cc}; - my $VC = 1 if $cc =~ /^cl/i; - my $BC = 1 if $cc =~ /^bcc/i; - my $GC = 1 if $cc =~ /^gcc/i; - my $so = $Config{'so'}; - my $libs = $Config{'perllibs'}; - my $libpth = $Config{'libpth'}; - my $libext = $Config{'lib_ext'} || ".lib"; - my(@libs, %libs_seen); - - if ($libs and $potential_libs !~ /:nodefault/i) { - # If Config.pm defines a set of default libs, we always - # tack them on to the user-supplied list, unless the user - # specified :nodefault - - $potential_libs .= " " if $potential_libs; - $potential_libs .= $libs; - } - warn "Potential libraries are '$potential_libs':\n" if $verbose; - - # normalize to forward slashes - $libpth =~ s,\\,/,g; - $potential_libs =~ s,\\,/,g; - - # compute $extralibs from $potential_libs - - my @searchpath; # from "-L/path" in $potential_libs - my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth); - my @extralibs; - my $pwd = cwd(); # from Cwd.pm - my $lib = ''; - my $found = 0; - my $search = 1; - my($fullname, $thislib, $thispth); - - # add "$Config{installarchlib}/CORE" to default search path - push @libpath, "$Config{installarchlib}/CORE"; - - if ($VC and exists $ENV{LIB} and $ENV{LIB}) { - push @libpath, split /;/, $ENV{LIB}; - } - - foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){ - - $thislib = $_; - - # see if entry is a flag - if (/^:\w+$/) { - $search = 0 if lc eq ':nosearch'; - $search = 1 if lc eq ':search'; - warn "Ignoring unknown flag '$thislib'\n" - if $verbose and !/^:(no)?(search|default)$/i; - next; - } - - # if searching is disabled, do compiler-specific translations - unless ($search) { - s/^-l(.+)$/$1.lib/ unless $GC; - s/^-L/-libpath:/ if $VC; - push(@extralibs, $_); - $found++; - next; - } - - # handle possible linker path arguments - if (s/^-L// and not -d) { - warn "$thislib ignored, directory does not exist\n" - if $verbose; - next; - } - elsif (-d) { - unless ($self->file_name_is_absolute($_)) { - warn "Warning: '$thislib' changed to '-L$pwd/$_'\n"; - $_ = $self->catdir($pwd,$_); - } - push(@searchpath, $_); - next; - } - - # handle possible library arguments - if (s/^-l// and $GC and !/^lib/i) { - $_ = "lib$_"; - } - $_ .= $libext if !/\Q$libext\E$/i; - - my $secondpass = 0; - LOOKAGAIN: - - # look for the file itself - if (-f) { - warn "'$thislib' found as '$_'\n" if $verbose; - $found++; - push(@extralibs, $_); - next; - } - - my $found_lib = 0; - foreach $thispth (@searchpath, @libpath){ - unless (-f ($fullname="$thispth\\$_")) { - warn "'$thislib' not found as '$fullname'\n" if $verbose; - next; - } - warn "'$thislib' found as '$fullname'\n" if $verbose; - $found++; - $found_lib++; - push(@extralibs, $fullname); - push @libs, $fullname unless $libs_seen{$fullname}++; - last; - } - - # do another pass with (or without) leading 'lib' if they used -l - if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) { - if ($GC) { - goto LOOKAGAIN if s/^lib//i; - } - elsif (!/^lib/i) { - $_ = "lib$_"; - goto LOOKAGAIN; - } - } - - # give up - warn "Note (probably harmless): " - ."No library found for '$thislib'\n" - unless $found_lib>0; - - } - - return ('','','','', ($give_libs ? \@libs : ())) unless $found; - - # make sure paths with spaces are properly quoted - @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs; - @libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs; - $lib = join(' ',@extralibs); - - # normalize back to backward slashes (to help braindead tools) - # XXX this may break equally braindead GNU tools that don't understand - # backslashes, either. Seems like one can't win here. Cursed be CP/M. - $lib =~ s,/,\\,g; - - warn "Result: $lib\n" if $verbose; - wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib; + goto &ExtUtils::Liblist::Kid::ext; } - -sub _vms_ext { - my($self, $potential_libs,$verbose,$give_libs) = @_; - my(@crtls,$crtlstr); - my($dbgqual) = $self->{OPTIMIZE} || $Config{'optimize'} || - $self->{CCFLAS} || $Config{'ccflags'}; - @crtls = ( ($dbgqual =~ m-/Debug-i ? $Config{'dbgprefix'} : '') - . 'PerlShr/Share' ); - push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'}); - push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'}); - # In general, we pass through the basic libraries from %Config unchanged. - # The one exception is that if we're building in the Perl source tree, and - # a library spec could be resolved via a logical name, we go to some trouble - # to insure that the copy in the local tree is used, rather than one to - # which a system-wide logical may point. - if ($self->{PERL_SRC}) { - my($lib,$locspec,$type); - foreach $lib (@crtls) { - if (($locspec,$type) = $lib =~ m-^([\w$\-]+)(/\w+)?- and $locspec =~ /perl/i) { - if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; } - elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; } - else { $locspec .= $Config{'obj_ext'}; } - $locspec = $self->catfile($self->{PERL_SRC},$locspec); - $lib = "$locspec$type" if -e $locspec; - } - } - } - $crtlstr = @crtls ? join(' ',@crtls) : ''; - - unless ($potential_libs) { - warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose; - return ('', '', $crtlstr, '', ($give_libs ? [] : ())); - } - - my(@dirs,@libs,$dir,$lib,%found,@fndlibs,$ldlib); - my $cwd = cwd(); - my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'}; - # List of common Unix library names and there VMS equivalents - # (VMS equivalent of '' indicates that the library is automatially - # searched by the linker, and should be skipped here.) - my(@flibs, %libs_seen); - my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '', - 'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '', - 'socket' => '', 'X11' => 'DECW$XLIBSHR', - 'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR', - 'Xmu' => 'DECW$XMULIBSHR'); - if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; } - - warn "Potential libraries are '$potential_libs'\n" if $verbose; - - # First, sort out directories and library names in the input - foreach $lib (split ' ',$potential_libs) { - push(@dirs,$1), next if $lib =~ /^-L(.*)/; - push(@dirs,$lib), next if $lib =~ /[:>\]]$/; - push(@dirs,$lib), next if -d $lib; - push(@libs,$1), next if $lib =~ /^-l(.*)/; - push(@libs,$lib); - } - push(@dirs,split(' ',$Config{'libpth'})); - - # Now make sure we've got VMS-syntax absolute directory specs - # (We don't, however, check whether someone's hidden a relative - # path in a logical name.) - foreach $dir (@dirs) { - unless (-d $dir) { - warn "Skipping nonexistent Directory $dir\n" if $verbose > 1; - $dir = ''; - next; - } - warn "Resolving directory $dir\n" if $verbose; - if ($self->file_name_is_absolute($dir)) { $dir = $self->fixpath($dir,1); } - else { $dir = $self->catdir($cwd,$dir); } - } - @dirs = grep { length($_) } @dirs; - unshift(@dirs,''); # Check each $lib without additions first - - LIB: foreach $lib (@libs) { - if (exists $libmap{$lib}) { - next unless length $libmap{$lib}; - $lib = $libmap{$lib}; - } - - my(@variants,$variant,$name,$test,$cand); - my($ctype) = ''; - - # If we don't have a file type, consider it a possibly abbreviated name and - # check for common variants. We try these first to grab libraries before - # a like-named executable image (e.g. -lperl resolves to perlshr.exe - # before perl.exe). - if ($lib !~ /\.[^:>\]]*$/) { - push(@variants,"${lib}shr","${lib}rtl","${lib}lib"); - push(@variants,"lib$lib") if $lib !~ /[:>\]]/; - } - push(@variants,$lib); - warn "Looking for $lib\n" if $verbose; - foreach $variant (@variants) { - foreach $dir (@dirs) { - my($type); - - $name = "$dir$variant"; - warn "\tChecking $name\n" if $verbose > 2; - if (-f ($test = VMS::Filespec::rmsexpand($name))) { - # It's got its own suffix, so we'll have to figure out the type - if ($test =~ /(?:$so|exe)$/i) { $type = 'SHR'; } - elsif ($test =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; } - elsif ($test =~ /(?:$obj_ext|obj)$/i) { - warn "Note (probably harmless): " - ."Plain object file $test found in library list\n"; - $type = 'OBJ'; - } - else { - warn "Note (probably harmless): " - ."Unknown library type for $test; assuming shared\n"; - $type = 'SHR'; - } - } - elsif (-f ($test = VMS::Filespec::rmsexpand($name,$so)) or - -f ($test = VMS::Filespec::rmsexpand($name,'.exe'))) { - $type = 'SHR'; - $name = $test unless $test =~ /exe;?\d*$/i; - } - elsif (not length($ctype) and # If we've got a lib already, don't bother - ( -f ($test = VMS::Filespec::rmsexpand($name,$lib_ext)) or - -f ($test = VMS::Filespec::rmsexpand($name,'.olb')))) { - $type = 'OLB'; - $name = $test unless $test =~ /olb;?\d*$/i; - } - elsif (not length($ctype) and # If we've got a lib already, don't bother - ( -f ($test = VMS::Filespec::rmsexpand($name,$obj_ext)) or - -f ($test = VMS::Filespec::rmsexpand($name,'.obj')))) { - warn "Note (probably harmless): " - ."Plain object file $test found in library list\n"; - $type = 'OBJ'; - $name = $test unless $test =~ /obj;?\d*$/i; - } - if (defined $type) { - $ctype = $type; $cand = $name; - last if $ctype eq 'SHR'; - } - } - if ($ctype) { - # This has to precede any other CRTLs, so just make it first - if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; } - else { push @{$found{$ctype}}, $cand; } - warn "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1; - push @flibs, $name unless $libs_seen{$fullname}++; - next LIB; - } - } - warn "Note (probably harmless): " - ."No library found for $lib\n"; - } - - push @fndlibs, @{$found{OBJ}} if exists $found{OBJ}; - push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB}; - push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR}; - $lib = join(' ',@fndlibs); - - $ldlib = $crtlstr ? "$lib $crtlstr" : $lib; - warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose; - wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib; +sub lsdir { + shift; + my $rex = qr/$_[1]/; + opendir DIR, $_[0]; + my @out = grep /$rex/, readdir DIR; + closedir DIR; + return @out; } -1; - __END__ =head1 NAME @@ -535,9 +31,12 @@ ExtUtils::Liblist - determine libraries to use and how to use them =head1 SYNOPSIS -C + require ExtUtils::Liblist; + + $MM->ext($potential_libs, $verbose, $need_names); -C + # Usually you can get away with: + ExtUtils::Liblist->ext($potential_libs, $verbose, $need_names) =head1 DESCRIPTION @@ -563,12 +62,12 @@ Dependent libraries can be linked in one of three ways: by the ld command when the perl binary is linked with the extension library. See EXTRALIBS below. -=item * For dynamic extensions +=item * For dynamic extensions at build/link time by the ld command when the shared object is built/linked. See LDLOADLIBS below. -=item * For dynamic extensions +=item * For dynamic extensions at load time by the DynaLoader when the shared object is loaded. See BSLOADLIBS below.