Split out extension finding code from buildext.pl into FindExt.pm

Use it to get Config.pm's idea of available extensions in line
with what is built.

p4raw-id: //depot/perlio@9604

1 files changed, 62 insertions, 0 deletions

diff --git a/win32/FindExt.pm b/win32/FindExt.pm
new file mode 100644
index 0000000000..ea5165f1c4
--- /dev/null
+++ b/win32/FindExt.pm
@@ -0,0 +1,62 @@
+package FindExt;
+use strict;
+use File::Find;
+use File::Basename;
+use Cwd;
+
+my $no = join('|',qw(DynaLoader GDBM_File ODBM_File NDBM_File DB_File Syslog Sysv));
+$no = qr/^(?:$no)$/i;
+
+my %ext;
+my $ext;
+sub scan_ext
+{
+ my $here = getcwd();
+ my $dir  = shift;
+ chdir($dir) || die "Cannot cd to $dir\n";
+ ($ext = getcwd()) =~ s,/,\\,g;
+ find(\&find_ext,'.');
+ chdir($here) || die "Cannot cd to $here\n";
+ my @ext = extensions();
+}
+
+sub dynamic_extensions
+{
+ return grep $ext{$_} eq 'dynamic',keys %ext;
+}
+
+sub noxs_extensions
+{
+ return grep $ext{$_} eq 'noxs',keys %ext;
+}
+
+sub extensions
+{
+ return keys %ext;
+}
+
+sub find_ext
+{
+ if (/^(.*)\.pm$/i || /^(.*)_pm.PL$/i)
+  {
+   my $name = $1;
+   return if $name =~ $no; 
+   my $dir = $File::Find::dir; 
+   $dir =~ s,./,,;
+   return if exists $ext{$dir};
+   return unless -f "$ext/$dir/Makefile.PL";
+   if ($dir =~ /$name$/i)
+    {
+     if (-f "$ext/$dir/$name.xs")
+      {
+       $ext{$dir} = 'dynamic'; 
+      }
+     else
+      {
+       $ext{$dir} = 'nonxs'; 
+      }
+    }
+  }
+}
+
+1;