From Mike Wittman, perl script to assist W64 support.

VisualStudio/reset-64bit-outdirs.pl

@@ -0,0 +1,66 @@
+#!/usr/bin/perl -w
+use Getopt::Long qw(:config bundling);
+use File::Find;
+use File::Basename;
+use strict;
+
+sub usage {
+  my $file = basename($0);
+  "usage: $file [options]
+
+Resets the 64 bit OutputDirectory settings in the .vcproj files for
+OpenSceneGraph, Producer, and OpenThreads to be the same as the Win32
+settings.  This is a workaround for Visual Studio's annoying practice of
+generating this setting itself when creating the 64 bit configuration,
+rather than reusing the Win32 setting.
+
+To run, open a shell and execute
+        perl $file
+
+options:
+  -h, --help               print help information
+";
+}
+
+my ($print_help);
+my $opt_success = GetOptions('h|help'           => \$print_help);
+
+if (!$opt_success || $print_help) { print usage; exit !$print_help; }
+
+sub update_file {
+  my ($filename) = @_;
+
+  open(VCPROJ, "$filename") || die "$!";
+  local($/) = undef;
+  local($_) = <VCPROJ>;
+  close(VCPROJ);
+
+  # update the 64 bit DLL output path
+  my ($win32_dll_outputdir) = /^\s+Name="Debug\|Win32"\s+OutputDirectory="(.+?)"/mi;
+  s/^(\s+Name="(?:Debug|Release)?\|(?:x64|ia64)"\s+OutputDirectory=)"(.+?)"/$1"$win32_dll_outputdir"/mig;
+
+  # update the 64 bit lib output path, if applicable
+  my ($win32_lib_outputdir) = /^\s+Name="Debug Static\|Win32"\s+OutputDirectory="(.+?)"/mi;
+  s/^(\s+Name="(?:Debug|Release) Static?\|(?:x64|ia64)"\s+OutputDirectory=)"(.+?)"/$1"$win32_lib_outputdir"/mig
+    if $win32_lib_outputdir;
+
+  print $filename, "\n";
+
+  open(VCPROJ_OUT, "> $filename") || die "$!";
+  print VCPROJ_OUT $_;
+  close(VCPROJ_OUT);
+}
+
+sub callback {
+  update_file($_) if /\.vcproj$/i;
+}
+
+# cd to the directory containing this script, so paths below work properly
+chdir dirname($0);
+
+my @directories = qw(../../OpenThreads/win32_src
+                     ../../Producer/VC++7/Producer
+                     .);
+find(\&callback, @directories);
+
+exit;