6 my $file = 'lib/buildcustomize.pl';
10 chdir $dir or die "Can't chdir '$dir': $!";
15 # Used during cross-compilation.
19 # To clarify, this isn't the entire suite of modules considered "toolchain"
20 # It's not even all modules needed to build ext/
21 # It's just the source paths of the (minimum complete set of) modules in ext/
22 # needed to build the nonxs modules
23 # After which, all nonxs modules are in lib, which was always sufficient to
24 # allow miniperl to build everything else.
25 # Term::ReadLine is not here for building but for allowing the debugger to
26 # run under miniperl when nothing but miniperl will build :-(.
28 my @toolchain = qw(cpan/AutoLoader/lib
30 dist/PathTools dist/PathTools/lib
31 cpan/ExtUtils-Install/lib
32 cpan/ExtUtils-MakeMaker/lib
33 cpan/ExtUtils-Manifest/lib
36 dist/Term-ReadLine/lib
44 # Text-ParseWords used only in ExtUtils::Liblist::Kid::_win32_ext()
45 # the rest are for XS building on Win32, since nonxs and xs build simultaneously
46 # on Win32 if parallel building
48 cpan/Text-ParseWords/lib
49 dist/ExtUtils-ParseXS/lib
52 cpan/ExtUtils-Constant/lib
53 ) if $^O eq 'MSWin32';
54 push @toolchain, 'ext/VMS-Filespec/lib' if $^O eq 'VMS';
56 unshift @INC, @toolchain;
57 require File::Spec::Functions;
60 my $cwd = Cwd::getcwd();
62 # lib must be last, as the toolchain modules write themselves into it
63 # as they build, and it's important that @INC order ensures that the partially
64 # written files are always masked by the complete versions.
66 my $inc = join ",\n ",
68 (map {File::Spec::Functions::rel2abs($_, $cwd)} (
69 # faster build on the non-parallel Win32 build process
70 $^O eq 'MSWin32' ? ('lib', @toolchain ) : (@toolchain, 'lib')
73 open my $fh, '>', $file
74 or die "Can't open $file: $!";
78 # If any of the system's build tools are written in Perl, then this module
79 # may well be loaded by a much older version than we are building. So keep it
80 # as backwards compatible as is easy.
81 print $fh <<"EOT" or $error = "Can't print to $file: $!";
84 # !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
85 # This file is generated by write_buildcustomize.pl.
86 # Any changes made here will be lost!
88 # We are miniperl, building extensions
89 # Replace the first entry of \@INC ("lib") with the list of
90 # directories we need.
91 splice(\@INC, 0, 1, $inc);
98 or warn "Can't unlink $file after error: $!";
102 $error = "Can't load generated $file: $@";
104 $error = "Can't close $file: $!";
108 # It's going very wrong, so try to remove the botched file.
111 or warn "Can't unlink $file after error: $!";
114 # ex: set ts=8 sts=4 sw=4 et: