diff --git a/Configurations/common0.tmpl b/Configurations/common0.tmpl
new file mode 100644
index 0000000000..c0060095ba
--- /dev/null
+++ b/Configurations/common0.tmpl
@@ -0,0 +1,31 @@
+{- # -*- Mode: perl -*-
+
+ # Commonly used list of generated files
+ # The reason for the complexity is that the build.info files provide
+ # GENERATE rules for *all* platforms without discrimination, while the
+ # build files only want those for a particular build.  Therefore, we
+ # need to extrapolate exactly what we need to generate.  The way to do
+ # that is to extract all possible source files from diverse tables and
+ # filter out all that are not generated
+ my %generatables =
+     map { $_ => 1 }
+     ( # The sources of stuff may be generated
+         ( map { @{$unified_info{sources}->{$_}} }
+               keys %{$unified_info{sources}} ),
+         $disabled{shared}
+             ? ()
+             : ( map { @{$unified_info{shared_sources}->{$_}} }
+                 keys %{$unified_info{shared_sources}} ),
+         # Things we explicitely depend on are usually generated
+         ( map { $_ eq "" ? () : @{$unified_info{depends}->{$_}} }
+               keys %{$unified_info{depends}} ));
+ our @generated =
+     sort ( ( grep { defined $unified_info{generate}->{$_} }
+              sort keys %generatables ),
+            # Scripts are assumed to be generated, so add thhem too
+            ( grep { defined $unified_info{sources}->{$_} }
+              @{$unified_info{scripts}} ) );
+
+ # Avoid strange output
+ "";
+-}
diff --git a/Configurations/descrip.mms.tmpl b/Configurations/descrip.mms.tmpl
index 029ba57722..09b67637be 100644
--- a/Configurations/descrip.mms.tmpl
+++ b/Configurations/descrip.mms.tmpl
@@ -55,11 +55,6 @@
   our @install_shlibs =
       map { $unified_info{sharednames}->{$_} || () }
       grep(!/\.a$/, @{$unified_info{install}->{libraries}});
-  our @generated = ( ( map { (my $x = $_) =~ s|\.[sS]$|\.asm|; $x }
-                       grep { defined $unified_info{generate}->{$_} }
-                       map { @{$unified_info{sources}->{$_}} }
-                       grep { /\.o$/ } keys %{$unified_info{sources}} ),
-                     ( grep { /\.(?:h|opt)$/ } keys %{$unified_info{generate}} ) );
 
   # This is a horrible hack, but is needed because recursive inclusion of files
   # in different directories does not work well with HP C.
@@ -136,7 +131,9 @@ DEPS={- our @deps = map { (my $x = $_) =~ s|\.o$|\$(DEP_EXT)|; $x; }
         join(", ", map { "-\n\t".$_ } @deps); -}
 {- output_on() if $disabled{makedepend}; "" -}
 GENERATED_MANDATORY={- join(", ", map { "-\n\t".$_ } @{$unified_info{depends}->{""}} ) -}
-GENERATED={- join(", ", map { "-\n\t".$_ } @generated) -}
+GENERATED={- # common0.tmpl provides @generated
+             join(", ", map { (my $x = $_) =~ s|\.[sS]$|.asm|; "-\n\t".$x }
+                        @generated) -}
 
 INSTALL_LIBS={- join(", ", map { "-\n\t".$_.".OLB" } @install_libs) -}
 INSTALL_SHLIBS={- join(", ", map { "-\n\t".$_.".EXE" } @install_shlibs) -}
diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index 62fd5e7a6a..46a4866e25 100644
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -106,12 +106,9 @@ DEPS={- join(" ", map { (my $x = $_) =~ s|\.o$|$depext|; $x; }
                   grep { $unified_info{sources}->{$_}->[0] =~ /\.c$/ }
                   keys %{$unified_info{sources}}); -}
 {- output_on() if $disabled{makedepend}; "" -}
-GENERATED_MANDATORY={- join(" ", @{$unified_info{depends}->{""}} ) -}
-GENERATED={- join(" ",
-                  ( grep { defined $unified_info{generate}->{$_} }
-                    map { @{$unified_info{sources}->{$_}} }
-                    grep { /\.(?:o|res)$/ } keys %{$unified_info{sources}} ),
-                  ( grep { /\.(?:h|map|def)$/ } keys %{$unified_info{generate}} )) -}
+GENERATED_MANDATORY={- join(" ", @{$unified_info{depends}->{""}}) -}
+GENERATED={- # common0.tmpl provides @generated
+             join(" ", @generated ) -}
 
 INSTALL_LIBS={- join(" ", map { lib($_) } @{$unified_info{install}->{libraries}}) -}
 INSTALL_SHLIBS={- join(" ", map { shlib($_) } @{$unified_info{install}->{libraries}}) -}
diff --git a/Configurations/windows-makefile.tmpl b/Configurations/windows-makefile.tmpl
index 5d767f72aa..1c6ce516c5 100644
--- a/Configurations/windows-makefile.tmpl
+++ b/Configurations/windows-makefile.tmpl
@@ -88,12 +88,9 @@ DEPS={- join(" ", map { (my $x = $_) =~ s|\.o$|$depext|; $x; }
                   keys %{$unified_info{sources}}); -}
 {- output_on() if $disabled{makedepend}; "" -}
 GENERATED_MANDATORY={- join(" ", @{$unified_info{depends}->{""}} ) -}
-GENERATED={- join(" ",
-                  ( map { (my $x = $_) =~ s|\.[sS]$|\.asm|; $x }
-                    grep { defined $unified_info{generate}->{$_} }
-                    map { @{$unified_info{sources}->{$_}} }
-                    grep { /\.o$/ } keys %{$unified_info{sources}} ),
-                  ( grep { /\.(?:h|def)$/ } keys %{$unified_info{generate}} )) -}
+GENERATED={- # common0.tmpl provides @generated
+             join(" ", map { (my $x = $_) =~ s|\.[sS]$|.asm|; $x }
+                       @generated) -}
 
 INSTALL_LIBS={- join(" ", map { lib($_) } @{$unified_info{install}->{libraries}}) -}
 INSTALL_SHLIBS={- join(" ", map { shlib($_) } @{$unified_info{install}->{libraries}}) -}
diff --git a/Configure b/Configure
index d1ea0618a5..99ab26f4a7 100755
--- a/Configure
+++ b/Configure
@@ -1630,7 +1630,9 @@ if ($builder eq "unified") {
 	die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
     }
     $config{build_file_templates}
-      = [ $build_file_template,
+      = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
+                    $blddir),
+          $build_file_template,
           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
                     $blddir) ];