diff -up gromacs-4.0.5/configure.orig gromacs-4.0.5/configure
--- gromacs-4.0.5/configure.orig	2009-05-22 11:59:34.000000000 +0300
+++ gromacs-4.0.5/configure	2009-05-22 12:00:14.000000000 +0300
@@ -31508,12 +31508,7 @@ AS="$CC"
 # However, the non-suffixed names are linked to the _mpi and/or _d suffixed
 # ones upon installation if that is the only version available.
 
-if test "$enable_mpi" = "yes"; then
-  LIBSUFFIX="_mpi"
-fi
-if test "$enable_float" = "no"; then
-  LIBSUFFIX="${LIBSUFFIX}_d"
-fi
+LIBSUFFIX="@LIBSUFFIX@"
 
 
 # Unless the user has explicitly requested a prefix/suffix/transform, we