Mixed up flags for creating shared libs

config/default

@@ -85,7 +85,7 @@ case "${HOSTNAME}" in
         --with-hdf5=/sw/aix61/hdf5-1.8.4-patch1-threadsafe \
         --with-zlib=/sw/aix53/zlib-1.2.3 --with-szlib=/sw/aix53/szip-2.1 \
         AR="ar -X 64" CFINT=-Dextname \
-        CC=xlc_r CFLAGS="-g -O3 -q64 -qhot -qarch=auto -qtune=auto -DHAVE_MMAP -brtl" FC=xlf_r
+        CC=xlc_r CFLAGS="-g -O3 -q64 -qhot -qarch=auto -qtune=auto -DHAVE_MMAP" LDFLAGS="-brtl" FC=xlf_r
         ;;
     *)
 	echo "configuration for hostname $HOSTNAME not found!"