gentoo-overlay/sci-libs/hdf/files/hdf-4.2.13-fix-xdr-configure.patch

Index: hdf-4.2.13/configure.ac
===================================================================
--- hdf-4.2.13.orig/configure.ac
+++ hdf-4.2.13/configure.ac
@@ -676,7 +676,7 @@ case "$host" in
   *) ;;
 esac
 
-if test "X$BUILD_XDR" != "Xyes"; then
+if test "X$BUILD_XDR" = "Xyes"; then
     AC_TRY_LINK([
     #include <rpc/types.h>
     #include <rpc/xdr.h>], [xdr_int],