diff -ru gngeo-0.8.orig/configure.in gngeo-0.8/configure.in
--- gngeo-0.8.orig/configure.in	2012-11-15 17:57:57.849578009 -0500
+++ gngeo-0.8/configure.in	2012-11-15 18:19:55.305923094 -0500
@@ -95,6 +95,7 @@
 #AC_SUBST(LIBOBJS)
 AC_CHECK_LIB([m], [acos])
 AC_CHECK_LIB([z], [inflate])
+AC_CHECK_LIB([minizip], [unzReadCurrentFile])