Unbreak on recent FreeBSD versions:

- Avoid <varagrs.h> usage in vafor of <stdarg.h>
- Correctly detect `libtelnet' location

net/tn3270/Makefile

@@ -20,12 +20,12 @@ MAN1=		tn3270.1 mset.1
 MAN5=		map3270.5
 MANCOMPRESSED=	maybe
 
+OLD_LIBTELNETDIR=	/usr/src/contrib/telnet
+
+.if exists(${OLD_LIBTELNETDIR})
+LIBTELNETDIR?=	/usr/src/contrib/telnet/libtelnet
+.else
 LIBTELNETDIR?=	/usr/src/lib/libtelnet
-
-.include <bsd.port.pre.mk>
-
-.if ${OSVERSION} >= 500113
-BROKEN=		"Does not compile on FreeBSD ${OSVERSION}"
 .endif
 
 post-extract:
@@ -36,6 +36,12 @@ post-extract:
 	exit 1; \
 	fi
 	${CP} -rp ${LIBTELNETDIR} ${WRKSRC}
+.if exists(${OLD_LIBTELNETDIR})
+	${CP} ${LIBTELNETDIR}/../arpa/telnet.h ${WRKSRC}/libtelnet
+	${SED} -E '/^(TELNETDIR|\.PATH|CFLAGS|INCS)/d' \
+		${LIBTELNETDIR}/../../../lib/libtelnet/Makefile > \
+		${WRKSRC}/libtelnet/Makefile
+.endif
 
 do-configure:
 	${ECHO_CMD} "BINDIR=	${PREFIX}/bin" > ${WRKDIR}/Makefile.inc
@@ -45,4 +51,4 @@ do-build:
 	${MAKE} depend; \
 	${MAKE} all
 
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>

net/tn3270/files/patch-commands.c

@@ -0,0 +1,44 @@
+--- telnet/commands.c.orig	Tue Aug 31 01:52:04 1999
++++ telnet/commands.c	Tue Jan 25 14:15:56 2005
+@@ -55,7 +55,7 @@
+ #include <netdb.h>
+ #include <ctype.h>
+ #include <pwd.h>
+-#include <varargs.h>
++#include <stdarg.h>
+ #include <errno.h>
+ 
+ #include <arpa/telnet.h>
+@@ -95,7 +95,9 @@
+ extern char **genget();
+ extern int Ambiguous();
+ 
+-static call();
++typedef int (*intrtn_t)();
++
++static call(intrtn_t routine, ...);
+ 
+ typedef struct {
+ 	char	*name;		/* command name */
+@@ -2452,19 +2454,14 @@
+  * Call routine with argc, argv set from args (terminated by 0).
+  */
+ 
+-    /*VARARGS1*/
+     static
+-call(va_alist)
+-    va_dcl
++call(intrtn_t routine, ...)
+ {
+     va_list ap;
+-    typedef int (*intrtn_t)();
+-    intrtn_t routine;
+     char *args[100];
+     int argno = 0;
+ 
+-    va_start(ap);
+-    routine = (va_arg(ap, intrtn_t));
++    va_start(ap, routine);
+     while ((args[argno++] = va_arg(ap, char *)) != 0) {
+ 	;
+     }