--- lbbs/configure.ac	2025/11/21 02:49:26	1.64
+++ lbbs/configure.ac	2025/11/21 07:36:41	1.65
@@ -22,27 +22,28 @@ AC_PROG_MAKE_SET
 AC_ARG_WITH([sysv],
             [AS_HELP_STRING([--with-sysv], [Use System V specific APIs])],
             [AS_IF([test "x$with_sysv" = xyes],
-                   [AC_DEFINE([HAVE_SYSTEM_V], [1], [Define if System V is available])])])
+                   [AC_DEFINE([HAVE_SYSTEM_V], [1], [Define if System V is available [default=yes]])])],
+            [with_sysv="yes"])
 AC_ARG_ENABLE([debug],
               [AS_HELP_STRING([--enable-debug], [Enable debug log])],
               [AS_IF([test "x$enable_debug" = xyes],
-                     [AC_DEFINE([_DEBUG], [1], [Define if debug log is enabled])])])
+                     [AC_DEFINE([_DEBUG], [1], [Define if debug log is enabled [default=no]])])])
 
 AC_ARG_WITH([iconv],
-            [AS_HELP_STRING([--with-iconv], [Use iconv library package config])],
+            [AS_HELP_STRING([--with-iconv], [Use iconv library package config [default=no]])],
             [],
             [with_iconv="no"])
 AC_ARG_WITH([mariadb],
-            [AS_HELP_STRING([--with-mariadb], [Use MariaDB library instead of MySQL client library])],
+            [AS_HELP_STRING([--with-mariadb], [Use MariaDB library instead of MySQL client library [default=no]])],
             [AS_IF([test "x$with_mariadb" = xyes],
                    [AC_DEFINE([HAVE_MARIADB_CLIENT], [1], [Define if MariaDB client is used])])],
             [with_mariadb="no"])
 AC_ARG_ENABLE([systemd],
-              [AS_HELP_STRING([--enable-systemd], [Enable systemd daemon])],
+              [AS_HELP_STRING([--enable-systemd], [Enable systemd daemon [default=no]])],
               [],
               [enable_systemd="no"])
 AC_ARG_WITH([epoll],
-            [AS_HELP_STRING([--with-epoll], [Use epoll instead of poll])],
+            [AS_HELP_STRING([--with-epoll], [Use epoll instead of poll [default=yes]])],
             [],
             [with_epoll="yes"])
 
@@ -61,6 +62,10 @@ AS_IF([test "x$with_mariadb" = xyes],
 AS_IF([test "x$enable_systemd" = xyes],
       [PKG_CHECK_MODULES([SYSTEMD], [libsystemd], [], [AC_MSG_ERROR([libsystemd is required.])])])
 
+AM_CONDITIONAL([LINK_USE_SO], [test "x$with_sysv" = xyes])
+AS_IF([test "x$with_sysv" = xyes],
+      [AC_DEFINE([LOAD_SO], [1], [Define if shared object is usable])])
+
 CPPFLAGS="$CPPFLAGS $LIBSSH_CFLAGS $MYSQLCLIENT_CFLAGS $SYSTEMD_CFLAGS $LIBPCRE2_CFLAGS $ICONV_CFLAGS"
 
 # Checks for libraries.