diff -up ghostscript-9.12/Resource/Init/gs_fonts.ps.runlibfileifexists ghostscript-9.12/Resource/Init/gs_fonts.ps
--- ghostscript-9.12/Resource/Init/gs_fonts.ps.runlibfileifexists	2014-03-25 08:52:16.000000000 +0000
+++ ghostscript-9.12/Resource/Init/gs_fonts.ps	2014-03-26 12:01:48.248748767 +0000
@@ -95,10 +95,19 @@ userdict /Fontmap .FontDirectory maxleng
                 % stack: dict file fontname filename|aliasname
       1 index type /stringtype eq
       1 index type /nametype eq and 1 index xcheck and
-      1 index /run eq 2 index /.runlibfile eq or and {
+      1 index /run eq 2 index /.runlibfile eq 3 index /.runlibfileifexists eq or or and {
                 % This is an inclusion entry.
-        pop findlibfile { exch pop } { file } ifelse
-        2 index exch .readFontmap pop
+        0 index /.runlibfileifexists eq {
+          pop findlibfile {
+            exch pop
+            2 index exch .readFontmap pop
+          } {
+            pop
+          } ifelse
+        } {
+          pop findlibfile { exch pop } { file } ifelse
+          2 index exch .readFontmap pop
+        } ifelse
       } {
                 % This is a real entry.
                 % Read and pop tokens until a semicolon.
diff -up ghostscript-9.12/Resource/Init/gs_init.ps.runlibfileifexists ghostscript-9.12/Resource/Init/gs_init.ps
--- ghostscript-9.12/Resource/Init/gs_init.ps.runlibfileifexists	2014-03-25 08:52:16.000000000 +0000
+++ ghostscript-9.12/Resource/Init/gs_init.ps	2014-03-26 12:01:48.248748767 +0000
@@ -681,6 +681,14 @@ systemdict /internaldict dup .makeintern
            { /undefinedfilename signalerror }
           ifelse
         } bind def
+/runlibfileifexists
+        {		% We don't want to bind 'run' into this procedure,
+                        % since run may get redefined.
+          findlibfile
+           { exch pop /run .systemvar exec }
+           { pop }
+          ifelse
+        } bind def
 /selectdevice
         { finddevice setdevice .setdefaultscreen } bind def
 /signalerror		% <object> <errorname> signalerror -
@@ -849,6 +857,7 @@ userdict /.currentresourcefile //null pu
         } bind def
 % Temporarily substitute it for the real runlibfile.
 /.runlibfile /runlibfile load def
+/.runlibfileifexists /runlibfileifexists load def
 /runlibfile /runlibfile0 load def
 
 % Create the error handling machinery.