Index: Makefile.PL
--- Makefile.PL.orig
+++ Makefile.PL
@@ -117,9 +117,8 @@ my %options = (
   ABSTRACT => 'Perl interface to the GMP integer functions',
   DEFINE   => $defines,
 
-  LIBS => [
-    $libopts
-  ],
+  INC  => "$ENV{CPPFLAGS}",
+  LIBS => ["$ENV{LDFLAGS} -lgmp"],
 
   LICENSE  => 'perl',
   VERSION_FROM => 'GMPz.pm',