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Diffstat (limited to 'write_buildcustomize.pl')
| -rw-r--r-- | write_buildcustomize.pl | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/write_buildcustomize.pl b/write_buildcustomize.pl new file mode 100644 index 0000000000..7d7589645d --- /dev/null +++ b/write_buildcustomize.pl @@ -0,0 +1,50 @@ +#!./miniperl -w + +use strict; +if (@ARGV) { + 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; + +# 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. + +my @toolchain = qw(cpan/AutoLoader/lib + dist/Cwd dist/Cwd/lib + dist/ExtUtils-Command/lib + dist/ExtUtils-Install/lib + cpan/ExtUtils-MakeMaker/lib + dist/ExtUtils-Manifest/lib + cpan/File-Path/lib + ); + +# Used only in ExtUtils::Liblist::Kid::_win32_ext() +push @toolchain, 'cpan/Text-ParseWords/lib' if $^O eq 'MSWin32'; + +# lib must be last, as the 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($_)} @toolchain, 'lib'), '.'; + +# If any of the system's build tools are written in Perl, then this module +# may well be loaded by a much older version than we are building. So keep it +# as backwards compatible as is easy. +print <<"EOT"; +#!perl + +# We are miniperl, building extensions +# Reset \@INC completely, adding the directories we need, and removing the +# installed directories (which we don't need to read, and may confuse us) +\@INC = ($inc); +EOT |