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#!./miniperl -w
use strict;
my $osname = $^O;
my $file = 'lib/buildcustomize.pl';
if ( @ARGV % 2 ) {
my $dir = shift;
chdir $dir or die "Can't chdir '$dir': $!";
unshift @INC, 'lib';
}
if ( @ARGV ) {
# Used during cross-compilation.
$osname = $ARGV[1];
}
# To clarify, this isn't the entire suite of modules considered "toolchain"
# It's not even all modules needed to build ext/
# It's just the source paths of the (minimum complete set of) modules in ext/
# needed to build the nonxs modules
# After which, all nonxs modules are in lib, which was always sufficient to
# allow miniperl to build everything else.
# Term::ReadLine is not here for building but for allowing the debugger to
# run under miniperl when nothing but miniperl will build :-(.
my @toolchain = qw(cpan/AutoLoader/lib
dist/Carp/lib
dist/PathTools dist/PathTools/lib
dist/ExtUtils-Command/lib
dist/ExtUtils-Install/lib
cpan/ExtUtils-MakeMaker/lib
dist/ExtUtils-Manifest/lib
cpan/File-Path/lib
ext/re
dist/Term-ReadLine/lib
dist/Exporter/lib
ext/File-Find/lib
cpan/Text-Tabs/lib
dist/constant/lib
);
# Used only in ExtUtils::Liblist::Kid::_win32_ext()
push @toolchain, 'cpan/Text-ParseWords/lib' if $^O eq 'MSWin32';
push @toolchain, 'ext/VMS-Filespec/lib' if $^O eq 'VMS';
unshift @INC, @toolchain;
require File::Spec::Functions;
# lib must be last, as the toolchain modules write themselves into it
# as they build, and it's important that @INC order ensures that the partially
# written files are always masked by the complete versions.
my $inc = join ",\n ",
map { "q\0$_\0" }
(map {File::Spec::Functions::rel2abs($_)} (
# faster build on the non-parallel Win32 build process
$^O eq 'MSWin32' ? ('lib', @toolchain ) : (@toolchain, 'lib')
));
open my $fh, '>', $file
or die "Can't open $file: $!";
my $error;
# If any of the system's build tools are written in Perl, then this module
# may well be loaded by a much older version than we are building. So keep it
# as backwards compatible as is easy.
print $fh <<"EOT" or $error = "Can't print to $file: $!";
#!perl
# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
# This file is generated by write_buildcustomize.pl.
# Any changes made here will be lost!
# We are miniperl, building extensions
# Replace the first entry of \@INC ("lib") with the list of
# directories we need.
${\($^O eq 'MSWin32' ? '${^WIN32_SLOPPY_STAT} = 1;':'')}
splice(\@INC, 0, 1, $inc);
\$^O = '$osname';
EOT
if ($error) {
close $fh
or warn "Can't unlink $file after error: $!";
} else {
if (close $fh) {
do $file and exit;
$error = "Can't load generated $file: $@";
} else {
$error = "Can't close $file: $!";
}
}
# It's going very wrong, so try to remove the botched file.
unlink $file
or warn "Can't unlink $file after error: $!";
die $error;
# Local variables:
# cperl-indent-level: 4
# indent-tabs-mode: nil
# End:
#
# ex: set ts=8 sts=4 sw=4 et:
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