source: trunk/essentials/dev-lang/perl/ext/Encode/EBCDIC/Makefile.PL@ 3397

use 5.7.2;
use strict;
use ExtUtils::MakeMaker;

my $name = 'EBCDIC';
my %tables = (
              ebcdic_t  => 
              ['posix-bc.ucm',
               qw(cp037.ucm cp1026.ucm cp1047.ucm cp500.ucm cp875.ucm),
               ],
              );

WriteMakefile(
              INC               => "-I../Encode",
              NAME              => 'Encode::'.$name,
              VERSION_FROM      => "$name.pm",
              OBJECT            => '$(O_FILES)',
              'dist'            => {
                  COMPRESS      => 'gzip -9f',
                  SUFFIX        => 'gz',
                  DIST_DEFAULT => 'all tardist',
              },
              MAN3PODS  => {},
              # OS 390 winges about line numbers > 64K ???
              XSOPT => '-nolinenumbers',
              );

package MY;

sub post_initialize
{
    my ($self) = @_;
    my %o;
    my $x = $self->{'OBJ_EXT'};
    # Add the table O_FILES
    foreach my $e (keys %tables)
    {
        $o{$e.$x} = 1;
    }
    $o{"$name$x"} = 1;
    $self->{'O_FILES'} = [sort keys %o];
    my @files = ("$name.xs");
    $self->{'C'} = ["$name.c"];
    $self->{SOURCE} .= " $name.c"
        if $^O eq 'MacOS' && $self->{SOURCE} !~ /\b$name\.c\b/;
    $self->{'H'} = [$self->catfile($self->updir,'Encode', 'encode.h')];
    my %xs;
    foreach my $table (keys %tables) {
        push (@{$self->{'C'}},"$table.c");
        # Do NOT add $table.h etc. to H_FILES unless we own up as to how they
        # get built.
        foreach my $ext (qw($(OBJ_EXT) .c .h .exh .fnm)) {
            push (@files,$table.$ext);
        }
        $self->{SOURCE} .= " $table.c"
            if $^O eq 'MacOS' && $self->{SOURCE} !~ /\b$table\.c\b/;
    }
    $self->{'XS'} = { "$name.xs" => "$name.c" };
    $self->{'clean'}{'FILES'} .= join(' ',@files);
    open(XS,">$name.xs") || die "Cannot open $name.xs:$!";
    print XS <<'END';
#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>
#define U8 U8
#include "encode.h"
END
    foreach my $table (keys %tables) {
        print XS qq[#include "${table}.h"\n];
    }
    print XS <<"END";

static void
Encode_XSEncoding(pTHX_ encode_t *enc)
{
 dSP;
 HV *stash = gv_stashpv("Encode::XS", TRUE);
 SV *sv    = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))),stash);
 int i = 0;
 PUSHMARK(sp);
 XPUSHs(sv);
 while (enc->name[i])
  {
   const char *name = enc->name[i++];
   XPUSHs(sv_2mortal(newSVpvn(name,strlen(name))));
  }
 PUTBACK;
 call_pv("Encode::define_encoding",G_DISCARD);
 SvREFCNT_dec(sv);
}

MODULE = Encode::$name  PACKAGE = Encode::$name
PROTOTYPES: DISABLE
BOOT:
{
END
    foreach my $table (keys %tables) {
        print XS qq[#include "${table}.exh"\n];
    }
    print XS "}\n";
    close(XS);
    return "# Built $name.xs\n\n";
}

sub postamble
{
    my $self = shift;
    my $dir  = $self->catdir($self->updir,'ucm');
    my $str  = "# $name\$(OBJ_EXT) depends on .h and .exh files not .c files - but all written by enc2xs\n";
    $str    .= "$name.c : $name.xs ";
    foreach my $table (keys %tables)
    {
        $str .= " $table.c";
    }
    $str .= "\n\n";
    $str .= "$name\$(OBJ_EXT) : $name.c\n\n";

    my $enc2xs = $self->catfile($self->updir,'bin', 'enc2xs');
    foreach my $table (keys %tables)
    {
        my $numlines = 1;
        my $lengthsofar = length($str);
        my $continuator = '';
        $str .= "$table.c : $enc2xs Makefile.PL";
        foreach my $file (@{$tables{$table}})
        {
            $str .= $continuator.' '.$self->catfile($dir,$file);
            if ( length($str)-$lengthsofar > 128*$numlines )
            {
                $continuator .= " \\\n\t";
                $numlines++;
            } else {
                $continuator = '';
            }
        }
        my $plib   = $self->{PERL_CORE} ? '"-I$(PERL_LIB)"' : '';
        $plib .= " -MCross=$::Cross::platform" if defined $::Cross::platform;
        my $ucopts = '-"Q" -"O"';
        $str .=  
            qq{\n\t\$(PERL) $plib $enc2xs $ucopts -o \$\@ -f $table.fnm\n\n};
        open (FILELIST, ">$table.fnm")
            || die "Could not open $table.fnm: $!";
        foreach my $file (@{$tables{$table}})
        {
            print FILELIST $self->catfile($dir,$file) . "\n";
        }
        close(FILELIST);
    }
    return $str;
}