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Diffstat (limited to 'contrib/perl5/lib/ExtUtils/Mkbootstrap.pm')
| -rw-r--r-- | contrib/perl5/lib/ExtUtils/Mkbootstrap.pm | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/contrib/perl5/lib/ExtUtils/Mkbootstrap.pm b/contrib/perl5/lib/ExtUtils/Mkbootstrap.pm new file mode 100644 index 0000000..35d5236 --- /dev/null +++ b/contrib/perl5/lib/ExtUtils/Mkbootstrap.pm @@ -0,0 +1,103 @@ +package ExtUtils::Mkbootstrap; + +$VERSION = substr q$Revision: 1.13 $, 10; +# $Date: 1996/09/03 17:04:43 $ + +use Config; +use Exporter; +@ISA=('Exporter'); +@EXPORT='&Mkbootstrap'; + +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($method) = ''; + if (@all){ + open BS, ">$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 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 |
