--- nono/configure	2026/04/29 17:05:26	1.1.1.15
+++ nono/configure	2026/04/29 17:05:34	1.1.1.16
@@ -649,6 +649,7 @@ WXWIDGETS_LIBS
 WXWIDGETS_CPPFLAGS
 WITH_GUI
 WX_MAJORMINOR
+HOSTNET_SLIRP
 HOSTNET_BPF
 HOSTNET_TAP
 HOSTNET_AFPACKET
@@ -722,6 +723,7 @@ ac_user_opts='
 enable_option_checking
 enable_avx2
 enable_neon
+with_libslirp
 with_gui
 '
       ac_precious_vars='build_alias
@@ -1363,6 +1365,7 @@ Optional Features:
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --without-libslirp      disable usermode network (using SLIRP)
   --without-gui           disable GUI support
 
 Some influential environment variables:
@@ -5694,6 +5697,70 @@ esac
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
 
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __builtin_bitreverse16" >&5
+printf %s "checking for __builtin_bitreverse16... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+		return __builtin_bitreverse16(1);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		printf "%s\n" "#define HAVE___BUILTIN_BITREVERSE16 1" >>confdefs.h
+
+
+else case e in #(
+  e)
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	 ;;
+esac
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __builtin_bitreverse32" >&5
+printf %s "checking for __builtin_bitreverse32... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+		return __builtin_bitreverse32(1);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+		printf "%s\n" "#define HAVE___BUILTIN_BITREVERSE32 1" >>confdefs.h
+
+
+else case e in #(
+  e)
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	 ;;
+esac
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __builtin_bswap16" >&5
 printf %s "checking for __builtin_bswap16... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7479,6 +7546,96 @@ esac
 fi
 
 
+# libslirp
+
+# Check whether --with-libslirp was given.
+if test ${with_libslirp+y}
+then :
+  withval=$with_libslirp;
+else case e in #(
+  e) with_libslirp=yes ;;
+esac
+fi
+
+
+if test "x$with_libslirp" != "xno"
+then :
+
+
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for libslirp" >&5
+printf %s "checking for libslirp... " >&6; }
+	for path in ${PATHS}; do
+		old_CPPFLAGS=${CPPFLAGS}
+		old_LIBS=${LIBS}
+		case ${path} in
+		 none)
+			LIBS="${LIBS} -lslirp"
+			;;
+		 *)
+			CPPFLAGS="${CPPFLAGS} -I${path}/include"
+			LIBS="${LIBS} -L${path}/lib -lslirp"
+			;;
+		esac
+		cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+		#include <slirp/libslirp.h>
+
+int
+main (void)
+{
+
+		slirp_version_string();
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_link "$LINENO"
+then :
+
+			has_libslirp=yes
+			break
+
+else case e in #(
+  e)
+			has_libslirp=no
+		 ;;
+esac
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+		CPPFLAGS=${old_CPPFLAGS}
+		LIBS=${old_LIBS}
+	done
+	if test x"${has_libslirp}" = x"yes"; then
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+	else
+		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+	fi
+
+	if test x"${has_libslirp}" = x"yes"; then
+		printf "%s\n" "#define HAVE_HOSTNET_SLIRP 1" >>confdefs.h
+
+		HOSTNET_SLIRP=yes
+
+	else
+		as_fn_error $? "*** libslirp is not found.
+*** If use use pkgsrc, install net/libslirp.
+*** If you use Ubuntu, sudo apt install libslirp-dev.
+*** Or specify --without-libslirp (it disables hostnet-driver=usermode)." "$LINENO" 5
+	fi
+
+else case e in #(
+  e)
+	HOSTNET_SLIRP=no
+
+ ;;
+esac
+fi
+
 # wxWidgets
 
 # Check whether --with-gui was given.
@@ -7666,7 +7823,15 @@ fi
 
 # nono 本体のチェックはここまで。
 nono_CPPFLAGS=${CPPFLAGS}
-nono_LIBS=${LIBS}
+case "${host_os}" in
+ netbsd*)
+	# どうしたもんかこれ。
+	nono_LIBS=`echo ${LIBS} | sed -e 's/-L\([^ ]*\) /-L\1 -Wl,-R,\1 /'`
+	;;
+ *)
+	nono_LIBS=${LIBS}
+	;;
+esac
 NONO_CPPFLAGS=${nono_CPPFLAGS}
 
 NONO_LIBS=${nono_LIBS}