test -z "$supported_locks" && supported_locks="@supported_locks@"
test -z "$default_locking" && default_locking="@default_locking@"
test -z "$MULTIBYTE_ENABLED" && MULTIBYTE_ENABLED="@MULTIBYTE_ENABLED@"
test -z "$ICONV_ENABLED" && ICONV_ENABLED="@ICONV_ENABLED@"
test -z "$supported_locks" && supported_locks="@supported_locks@"
test -z "$default_locking" && default_locking="@default_locking@"
test -z "$MULTIBYTE_ENABLED" && MULTIBYTE_ENABLED="@MULTIBYTE_ENABLED@"
test -z "$ICONV_ENABLED" && ICONV_ENABLED="@ICONV_ENABLED@"