aversion=_PECL_TR_VERSION([$PECL_CHECKED_VERSION([$1])])
mversion=_PECL_TR_VERSION([$2])
AC_MSG_CHECKING([whether $1 version $PECL_CHECKED_VERSION([$1]) >= $2])
- if test "$aversion" -lt "$mversion"; then
+ if test -z "$aversion" || test "$aversion" -lt "$mversion"; then
ifelse($4,,AC_MSG_ERROR([no]), [
AC_MSG_RESULT([no])
$4