--- rpl/Attic/configure.in	2010/08/09 13:52:12	1.34
+++ rpl/Attic/configure.in	2010/08/12 14:14:58	1.35
@@ -471,6 +471,11 @@ AC_CHECK_TYPE([union semun], SEMUN=-DUNI
 #include <sys/sem.h>
 ]])
 
+dnl Check for IPv6 support
+AC_CHECK_TYPE([struct sockaddr_in6], IPV6=-DIPV6, IPV6=-UIPV6, [[
+#include <netinet/in.h>
+]])
+
 dnl Do we need to use -ldl?
 if test "$CYGWIN" != yes; then
 	AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl",
@@ -905,6 +910,16 @@ case $OS in
 		C_STANDARD=-std=gnu99
 	break ;;
 
+	Interix)
+		EXPORT_DYNAMIC=-Wl,--export-all-symbols
+		NESTED_FUNCTIONS=
+		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
+		SEMAPHORES_SYSV=-USEMAPHORES_SYSV
+		ac_configure_args="$ac_configure_args --with-readline=builtin \
+				--disable-shared --enable-static"
+		C_STANDARD=-std=gnu99
+	break;;
+
     AIX)
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
@@ -918,7 +933,7 @@ case $OS in
     OS/2)
 		MALLOC=
 		OS=OS2
-		FINAL_ENCODING=UTF-8
+		FINAL_ENCODING=CP850
 		NESTED_FUNCTIONS=
 		EXPORT_DYNAMIC=-Zmap
 		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
@@ -946,6 +961,7 @@ AC_SUBST(NESTED_FUNCTIONS)
 AC_SUBST(SEMAPHORES_NOMMES)
 AC_SUBST(SEMAPHORES_SYSV)
 AC_SUBST(SEMUN)
+AC_SUBST(IPV6)
 
 AC_SUBST(NCURSES)
 AC_SUBST(READLINE)