#!./miniperl -w
use strict;
-if (@ARGV) {
+
+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';
}
-unshift @INC, ('dist/Cwd', 'dist/Cwd/lib');
-require File::Spec::Functions;
+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/
my @toolchain = qw(cpan/AutoLoader/lib
dist/Carp/lib
- dist/Cwd dist/Cwd/lib
- dist/ExtUtils-Command/lib
- dist/ExtUtils-Install/lib
+ dist/PathTools dist/PathTools/lib
+ cpan/ExtUtils-Install/lib
cpan/ExtUtils-MakeMaker/lib
- dist/ExtUtils-Manifest/lib
+ cpan/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
+ cpan/version/lib
);
-# Used only in ExtUtils::Liblist::Kid::_win32_ext()
-push @toolchain, 'cpan/Text-ParseWords/lib' if $^O eq 'MSWin32';
+# Text-ParseWords used only in ExtUtils::Liblist::Kid::_win32_ext()
+# the rest are for XS building on Win32, since nonxs and xs build simultaneously
+# on Win32 if parallel building
+push @toolchain, qw(
+ cpan/Text-ParseWords/lib
+ dist/ExtUtils-ParseXS/lib
+ cpan/Getopt-Long/lib
+ cpan/parent/lib
+ cpan/ExtUtils-Constant/lib
+) if $^O eq 'MSWin32';
+push @toolchain, 'ext/VMS-Filespec/lib' if $^O eq 'VMS';
+
+unshift @INC, @toolchain;
+require File::Spec::Functions;
+require Cwd;
+
+my $cwd = Cwd::getcwd();
# 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
my $inc = join ",\n ",
map { "q\0$_\0" }
- (map {File::Spec::Functions::rel2abs($_)} @toolchain, 'lib'), '.';
+ (map {File::Spec::Functions::rel2abs($_, $cwd)} (
+# 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 <<"EOT";
+print $fh <<"EOT" or $error = "Can't print to $file: $!";
#!perl
+# !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
+# This file is generated by write_buildcustomize.pl.
+# Any changes made here will be lost!
+
# We are miniperl, building extensions
-# Reset \@INC completely, adding the directories we need, and removing the
-# installed directories (which we don't need to read, and may confuse us)
-\@INC = ($inc);
+# Replace the first entry of \@INC ("lib") with the list of
+# directories we need.
+splice(\@INC, 0, 1, $inc);
+\$^O = '$osname';
+__END__
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;
+
+# ex: set ts=8 sts=4 sw=4 et: