1 diff --git a/configure.ac b/configure.ac
2 index d56d3a550..81abf8f00 100644
5 @@ -2390,7 +2390,7 @@ fi
6 AC_PATH_PROG(HAVE_GETCONF_CMD, getconf, "no")
7 if test "$HAVE_GETCONF_CMD" != "no"; then
8 CLS=$(getconf LEVEL1_DCACHE_LINESIZE)
9 - if [test "$CLS" != "" && test "$CLS" != "0"]; then
10 + if [test "$CLS" != "" && test "$CLS" != "0" && test "$CLS" != "undefined"]; then
11 AC_DEFINE_UNQUOTED([CLS],[${CLS}],[L1 cache line size])
13 AC_DEFINE([CLS],[64],[L1 cache line size])