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-rw-r--r--Master/tlpkg/tlperl/lib/ExtUtils/Mkbootstrap.pm109
1 files changed, 109 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/ExtUtils/Mkbootstrap.pm b/Master/tlpkg/tlperl/lib/ExtUtils/Mkbootstrap.pm
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+package ExtUtils::Mkbootstrap;
+
+# There's just too much Dynaloader incest here to turn on strict vars.
+use strict 'refs';
+
+our $VERSION = '6.56';
+
+require Exporter;
+our @ISA = ('Exporter');
+our @EXPORT = ('&Mkbootstrap');
+
+use Config;
+
+our $Verbose = 0;
+
+
+sub Mkbootstrap {
+ my($baseext, @bsloadlibs)=@_;
+ @bsloadlibs = grep($_, @bsloadlibs); # strip empty libs
+
+ print STDOUT " bsloadlibs=@bsloadlibs\n" if $Verbose;
+
+ # We need DynaLoader here because we and/or the *_BS file may
+ # call dl_findfile(). We don't say `use' here because when
+ # first building perl extensions the DynaLoader will not have
+ # been built when MakeMaker gets first used.
+ require DynaLoader;
+
+ rename "$baseext.bs", "$baseext.bso"
+ if -s "$baseext.bs";
+
+ if (-f "${baseext}_BS"){
+ $_ = "${baseext}_BS";
+ package DynaLoader; # execute code as if in DynaLoader
+ local($osname, $dlsrc) = (); # avoid warnings
+ ($osname, $dlsrc) = @Config::Config{qw(osname dlsrc)};
+ $bscode = "";
+ unshift @INC, ".";
+ require $_;
+ shift @INC;
+ }
+
+ if ($Config{'dlsrc'} =~ /^dl_dld/){
+ package DynaLoader;
+ push(@dl_resolve_using, dl_findfile('-lc'));
+ }
+
+ my(@all) = (@bsloadlibs, @DynaLoader::dl_resolve_using);
+ my($method) = '';
+ if (@all){
+ open my $bs, ">", "$baseext.bs"
+ or die "Unable to open $baseext.bs: $!";
+ print STDOUT "Writing $baseext.bs\n";
+ print STDOUT " containing: @all" if $Verbose;
+ print $bs "# $baseext DynaLoader bootstrap file for $^O architecture.\n";
+ print $bs "# Do not edit this file, changes will be lost.\n";
+ print $bs "# This file was automatically generated by the\n";
+ print $bs "# Mkbootstrap routine in ExtUtils::Mkbootstrap (v$VERSION).\n";
+ print $bs "\@DynaLoader::dl_resolve_using = ";
+ # If @all contains names in the form -lxxx or -Lxxx then it's asking for
+ # runtime library location so we automatically add a call to dl_findfile()
+ if (" @all" =~ m/ -[lLR]/){
+ print $bs " dl_findfile(qw(\n @all\n ));\n";
+ }else{
+ print $bs " qw(@all);\n";
+ }
+ # write extra code if *_BS says so
+ print $bs $DynaLoader::bscode if $DynaLoader::bscode;
+ print $bs "\n1;\n";
+ close $bs;
+ }
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+ExtUtils::Mkbootstrap - make a bootstrap file for use by DynaLoader
+
+=head1 SYNOPSIS
+
+C<Mkbootstrap>
+
+=head1 DESCRIPTION
+
+Mkbootstrap typically gets called from an extension Makefile.
+
+There is no C<*.bs> file supplied with the extension. Instead, there may
+be a C<*_BS> file which has code for the special cases, like posix for
+berkeley db on the NeXT.
+
+This file will get parsed, and produce a maybe empty
+C<@DynaLoader::dl_resolve_using> array for the current architecture.
+That will be extended by $BSLOADLIBS, which was computed by
+ExtUtils::Liblist::ext(). If this array still is empty, we do nothing,
+else we write a .bs file with an C<@DynaLoader::dl_resolve_using>
+array.
+
+The C<*_BS> file can put some code into the generated C<*.bs> file by
+placing it in C<$bscode>. This is a handy 'escape' mechanism that may
+prove useful in complex situations.
+
+If @DynaLoader::dl_resolve_using contains C<-L*> or C<-l*> entries then
+Mkbootstrap will automatically add a dl_findfile() call to the
+generated C<*.bs> file.
+
+=cut