use vars qw($VERSION);
# Broken out of MakeMaker from version 4.11
-$VERSION = substr q$Revision: 1.2201 $, 10;
+$VERSION = substr q$Revision: 1.25 $, 10;
use Config;
use Cwd 'cwd';
use File::Basename;
sub ext {
- if ($^O eq 'VMS') { return &_vms_ext; }
- else { return &_unix_os2_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, $Verbose) = @_;
+ my($self,$potential_libs, $verbose) = @_;
if ($^O =~ 'os2' and $Config{libs}) {
# Dynamic libraries are not transitive, so we may need including
# the libraries linked against perl.dll again.
$potential_libs .= $Config{libs};
}
return ("", "", "", "") unless $potential_libs;
- print STDOUT "Potential libraries are '$potential_libs':\n" if $Verbose;
+ warn "Potential libraries are '$potential_libs':\n" if $verbose;
my($so) = $Config{'so'};
my($libs) = $Config{'libs'};
# compute $extralibs, $bsloadlibs and $ldloadlibs from
# $potential_libs
# this is a rewrite of Andy Dougherty's extliblist in perl
- # its home is in <distribution>/ext/util
my(@searchpath); # from "-L/path" entries in $potential_libs
my(@libpath) = split " ", $Config{'libpth'};
if ($thislib =~ s/^(-[LR])//){ # save path flag type
my($ptype) = $1;
unless (-d $thislib){
- print STDOUT "$ptype$thislib ignored, directory does not exist\n"
- if $Verbose;
+ warn "$ptype$thislib ignored, directory does not exist\n"
+ if $verbose;
next;
}
unless ($self->file_name_is_absolute($thislib)) {
- print STDOUT "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
+ warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
$thislib = $self->catdir($pwd,$thislib);
}
push(@searchpath, $thislib);
# Handle possible library arguments.
unless ($thislib =~ s/^-l//){
- print STDOUT "Unrecognized argument in LIBS ignored: '$thislib'\n";
+ warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
next;
}
#
# , the compilation tools expand the environment variables.)
} else {
- print STDOUT "$thislib not found in $thispth\n" if $Verbose;
+ warn "$thislib not found in $thispth\n" if $verbose;
next;
}
- print STDOUT "'-l$thislib' found at $fullname\n" if $Verbose;
+ warn "'-l$thislib' found at $fullname\n" if $verbose;
my($fullnamedir) = dirname($fullname);
push @ld_run_path, $fullnamedir unless $ld_run_path_seen{$fullnamedir}++;
$found++;
}
last; # found one here so don't bother looking further
}
- print STDOUT "Note (probably harmless): "
+ warn "Note (probably harmless): "
."No library found for -l$thislib\n"
unless $found_lib>0;
}
("@extralibs", "@bsloadlibs", "@ldloadlibs",join(":",@ld_run_path));
}
+sub _win32_ext {
+
+ require Text::ParseWords;
+
+ my($self, $potential_libs, $verbose) = @_;
+
+ # If user did not supply a list, we punt.
+ # (caller should probably use the list in $Config{libs})
+ return ("", "", "", "") unless $potential_libs;
+
+ my($so) = $Config{'so'};
+ my($libs) = $Config{'libs'};
+ my($libpth) = $Config{'libpth'};
+ my($libext) = $Config{'lib_ext'} || ".lib";
+
+ if ($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" entries in $potential_libs
+ my(@libpath) = Text::ParseWords::quotewords('\s+', 0, $libpth);
+ my(@extralibs);
+ my($fullname, $thislib, $thispth);
+ my($pwd) = cwd(); # from Cwd.pm
+ my($lib) = '';
+ my($found) = 0;
+
+ foreach $thislib (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){
+
+ # Handle possible linker path arguments.
+ if ($thislib =~ s/^-L// and not -d $thislib) {
+ warn "-L$thislib ignored, directory does not exist\n"
+ if $verbose;
+ next;
+ }
+ elsif (-d $thislib) {
+ unless ($self->file_name_is_absolute($thislib)) {
+ warn "Warning: '-L$thislib' changed to '-L$pwd/$thislib'\n";
+ $thislib = $self->catdir($pwd,$thislib);
+ }
+ push(@searchpath, $thislib);
+ next;
+ }
+
+ # Handle possible library arguments.
+ if ($thislib =~ s/^-l// and $thislib !~ /^lib/i) {
+ $thislib = "lib$thislib";
+ }
+ $thislib .= $libext if $thislib !~ /\Q$libext\E$/i;
+
+ my($found_lib)=0;
+ foreach $thispth (@searchpath, @libpath){
+ unless (-f ($fullname="$thispth\\$thislib")) {
+ warn "$thislib not found in $thispth\n" if $verbose;
+ next;
+ }
+ warn "'$thislib' found at $fullname\n" if $verbose;
+ $found++;
+ $found_lib++;
+ push(@extralibs, $fullname);
+ last;
+ }
+ warn "Note (probably harmless): "
+ ."No library found for '$thislib'\n"
+ unless $found_lib>0;
+ }
+ return ('','','','') unless $found;
+
+ # make sure paths with spaces are properly quoted
+ @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
+ $lib = join(' ',@extralibs);
+ warn "Result: $lib\n" if $verbose;
+ wantarray ? ($lib, '', $lib, '') : $lib;
+}
+
sub _vms_ext {
my($self, $potential_libs,$verbose) = @_;
- return ('', '', '', '') unless $potential_libs;
+ my(@crtls,$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{'libs'});
+ 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;
+ }
+ }
+ }
+ $crtlstr = @crtls ? join(' ',@crtls) : '';
- my(@dirs,@libs,$dir,$lib,%sh,%olb,%obj);
+ unless ($potential_libs) {
+ warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
+ return ('', '', $crtlstr, '');
+ }
+
+ my(@dirs,@libs,$dir,$lib,%sh,%olb,%obj,$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
'Xmu' => 'DECW$XMULIBSHR');
if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
- print STDOUT "Potential libraries are '$potential_libs'\n" if $verbose;
+ warn "Potential libraries are '$potential_libs'\n" if $verbose;
# First, sort out directories and library names in the input
foreach $lib (split ' ',$potential_libs) {
# path in a logical name.)
foreach $dir (@dirs) {
unless (-d $dir) {
- print STDOUT "Skipping nonexistent Directory $dir\n" if $verbose > 1;
+ warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
$dir = '';
next;
}
- print STDOUT "Resolving directory $dir\n" if $verbose;
+ warn "Resolving directory $dir\n" if $verbose;
if ($self->file_name_is_absolute($dir)) { $dir = $self->fixpath($dir,1); }
else { $dir = $self->catdir($cwd,$dir); }
}
push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
}
push(@variants,$lib);
- print STDOUT "Looking for $lib\n" if $verbose;
+ warn "Looking for $lib\n" if $verbose;
foreach $variant (@variants) {
foreach $dir (@dirs) {
my($type);
$name = "$dir$variant";
- print "\tChecking $name\n" if $verbose > 2;
+ 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) { $type = 'sh'; }
elsif ($test =~ /(?:$lib_ext|olb)$/i) { $type = 'olb'; }
elsif ($test =~ /(?:$obj_ext|obj)$/i) {
- print STDOUT "Note (probably harmless): "
+ warn "Note (probably harmless): "
."Plain object file $test found in library list\n";
$type = 'obj';
}
else {
- print STDOUT "Note (probably harmless): "
+ warn "Note (probably harmless): "
."Unknown library type for $test; assuming shared\n";
$type = 'sh';
}
elsif (not length($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')))) {
- print STDOUT "Note (probably harmless): "
+ warn "Note (probably harmless): "
."Plain object file $test found in library list\n";
$type = 'obj';
$name = $test unless $test =~ /obj;?\d*$/i;
if ($ctype) {
eval '$' . $ctype . "{'$cand'}++";
die "Error recording library: $@" if $@;
- print STDOUT "\tFound as $cand (really $ctest), type $ctype\n" if $verbose > 1;
+ warn "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1;
next LIB;
}
}
- print STDOUT "Note (probably harmless): "
+ warn "Note (probably harmless): "
."No library found for $lib\n";
}
push(@libs, map { "$_/Library" } sort keys %olb);
push(@libs, map { "$_/Share" } sort keys %sh);
$lib = join(' ',@libs);
- print "Result: $lib\n" if $verbose;
- wantarray ? ($lib, '', $lib, '') : $lib;
+
+ $ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
+ warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
+ wantarray ? ($lib, '', $ldlib, '') : $lib;
}
1;
C<require ExtUtils::Liblist;>
-C<ExtUtils::Liblist::ext($potential_libs, $Verbose);>
+C<ExtUtils::Liblist::ext($self, $potential_libs, $verbose);>
=head1 DESCRIPTION
libraries.
It returns an array of four scalar values: EXTRALIBS, BSLOADLIBS,
-LDLOADLIBS, and LD_RUN_PATH.
+LDLOADLIBS, and LD_RUN_PATH. Some of these don't mean anything
+on VMS and Win32. See the details about those platform specifics
+below.
Dependent libraries can be linked in one of three ways:
=item *
-LDLOADLIBS and EXTRALIBS are always identical under VMS, and BSLOADLIBS
-and LD_RIN_PATH are always empty.
+LDLOADLIBS contains both the libraries found based on C<$potential_libs> and
+the CRTLs, if any, specified in Config.pm. EXTRALIBS contains just those
+libraries found based on C<$potential_libs>. BSLOADLIBS and LD_RUN_PATH
+are always empty.
=back
encounter problems, or discover cases where the search could be improved,
please let us know.
+=head2 Win32 implementation
+
+The version of ext() which is executed under Win32 differs from the
+Unix-OS/2 version in several respects:
+
+=over 2
+
+=item *
+
+Input library and path specifications are accepted with or without the
+C<-l> and C<-L> prefices used by Unix linkers. C<-lfoo> specifies the
+library C<libfoo.lib> (unless C<foo> already starts with C<lib>), and
+C<-Ls:ome\dir> specifies a directory to look for the libraries that follow.
+If neither prefix is present, a token is considered a directory to search
+if it is in fact a directory, and a library to search for otherwise. The
+C<$Config{lib_ext}> suffix will be appended to any entries that are not
+directories and don't already have the suffix. Authors who wish their
+extensions to be portable to Unix or OS/2 should use the Unix prefixes,
+since the Unix-OS/2 version of ext() requires them.
+
+=item *
+
+Entries cannot be plain object files, as many Win32 compilers will
+not handle object files in the place of libraries.
+
+=item *
+
+If C<$potential_libs> is empty, the return value will be empty.
+Otherwise, the libraries specified by C<$Config{libs}> (see Config.pm)
+will be appended to the list of C<$potential_libs>. The libraries
+will be searched for in the directories specified in C<$potential_libs>
+as well as in C<$Config{libpth}>. For each library that is found, a
+space-separated list of fully qualified library pathnames is generated.
+You may specify an entry that matches C</:nodefault/i> in
+C<$potential_libs> to disable the appending of default libraries
+found in C<$Config{libs}> (this should be only needed very rarely).
+
+=item *
+
+The libraries specified may be a mixture of static libraries and
+import libraries (to link with DLLs). Since both kinds are used
+pretty transparently on the win32 platform, we do not attempt to
+distinguish between them.
+
+=item *
+
+LDLOADLIBS and EXTRALIBS are always identical under Win32, and BSLOADLIBS
+and LD_RUN_PATH are always empty (this may change in future).
+
+=item *
+
+You must make sure that any paths and path components are properly
+surrounded with double-quotes if they contain spaces. For example,
+C<$potential_libs> could be (literally):
+
+ "-Lc:\Program Files\vc\lib" msvcrt.lib "la test\foo bar.lib"
+
+Note how the first and last entries are protected by quotes in order
+to protect the spaces.
+
+=back
+
+
=head1 SEE ALSO
L<ExtUtils::MakeMaker>
projects / p5sagit/p5-mst-13.2.git / blobdiff