6 chdir $dir or die "Can't chdir '$dir': $!";
10 my $file = 'lib/buildcustomize.pl';
12 # To clarify, this isn't the entire suite of modules considered "toolchain"
13 # It's not even all modules needed to build ext/
14 # It's just the source paths of the (minimum complete set of) modules in ext/
15 # needed to build the nonxs modules
16 # After which, all nonxs modules are in lib, which was always sufficient to
17 # allow miniperl to build everything else.
18 # Term::ReadLine is not here for building but for allowing the debugger to
19 # run under miniperl when nothing but miniperl will build :-(.
21 my @toolchain = qw(cpan/AutoLoader/lib
24 dist/ExtUtils-Command/lib
25 dist/ExtUtils-Install/lib
26 cpan/ExtUtils-MakeMaker/lib
27 dist/ExtUtils-Manifest/lib
30 dist/Term-ReadLine/lib
37 # Used only in ExtUtils::Liblist::Kid::_win32_ext()
38 push @toolchain, 'cpan/Text-ParseWords/lib' if $^O eq 'MSWin32';
39 push @toolchain, 'ext/VMS-Filespec/lib' if $^O eq 'VMS';
41 unshift @INC, @toolchain;
42 require File::Spec::Functions;
44 # lib must be last, as the toolchain modules write themselves into it
45 # as they build, and it's important that @INC order ensures that the partially
46 # written files are always masked by the complete versions.
48 my $inc = join ",\n ",
50 (map {File::Spec::Functions::rel2abs($_)} @toolchain, 'lib'), '.';
52 open my $fh, '>', $file
53 or die "Can't open $file: $!";
57 # If any of the system's build tools are written in Perl, then this module
58 # may well be loaded by a much older version than we are building. So keep it
59 # as backwards compatible as is easy.
60 print $fh <<"EOT" or $error = "Can't print to $file: $!";
63 # We are miniperl, building extensions
64 # Reset \@INC completely, adding the directories we need, and removing the
65 # installed directories (which we don't need to read, and may confuse us)
71 or warn "Can't unlink $file after error: $!";
75 $error = "Can't load generated $file: $@";
77 $error = "Can't close $file: $!";
81 # It's going very wrong, so try to remove the botched file.
84 or warn "Can't unlink $file after error: $!";
88 # cperl-indent-level: 4
89 # indent-tabs-mode: nil
92 # ex: set ts=8 sts=4 sw=4 et: