Index: Random/Makefile.PL
--- Random/Makefile.PL.orig
+++ Random/Makefile.PL
@@ -11,8 +11,8 @@ my %options = %{
     '../typemap'
   ],
   'NAME'         => 'Math::GMPf::Random',
-  'LIBS'         => $LIBS,
-  'INC'          => $INC,
+  'LIBS'         => "$ENV{LDFLAGS} -lgmp",
+  'INC'          => "$ENV{CPPFLAGS}",
   'DEFINE'       => $DEFS,
   'VERSION_FROM' => 'Random.pm'
 }