Add autoconf option to enable a stripped down build.

The --enable-minimal option to configure reduces the list of dissectors
to a smaller set, needed to bring up an embedded system.

This produces a smaller tcpdump binary, something that is very
useful on small embedded systems, such as SOHO routers.

Author: biot

Makefile.in

@@ -89,157 +89,16 @@ LIBNETDISSECT_SRC=\
 	oui.c \
 	parsenfsfh.c \
 	print.c \
-	print-802_11.c \
-	print-802_15_4.c \
-	print-ah.c \
-	print-ahcp.c \
-	print-aodv.c \
-	print-aoe.c \
-	print-ap1394.c \
-	print-arcnet.c \
-	print-arp.c \
-	print-ascii.c \
-	print-atalk.c \
-	print-atm.c \
-	print-babel.c \
-	print-beep.c \
-	print-bfd.c \
-	print-bgp.c \
-	print-bootp.c \
-	print-bt.c \
-	print-calm-fast.c \
-	print-carp.c \
-	print-cdp.c \
-	print-cfm.c \
-	print-chdlc.c \
-	print-cip.c \
-	print-cnfp.c \
-	print-dccp.c \
-	print-decnet.c \
-	print-dhcp6.c \
-	print-domain.c \
-	print-dtp.c \
-	print-dvmrp.c \
-	print-eap.c \
-	print-egp.c \
-	print-eigrp.c \
-	print-enc.c \
-	print-esp.c \
-	print-ether.c \
-	print-fddi.c \
-	print-forces.c \
-	print-fr.c \
-	print-frag6.c \
-	print-ftp.c \
-	print-geneve.c \
-	print-geonet.c \
-	print-gre.c \
-	print-hsrp.c \
-	print-http.c \
-	print-icmp.c \
-	print-icmp6.c \
-	print-igmp.c \
-	print-igrp.c \
-	print-ip.c \
-	print-ip6.c \
-	print-ip6opts.c \
-	print-ipcomp.c \
-	print-ipfc.c \
-	print-ipnet.c \
-	print-ipx.c \
-	print-isakmp.c \
-	print-isoclns.c \
-	print-juniper.c \
-	print-krb.c \
-	print-l2tp.c \
-	print-lane.c \
-	print-ldp.c \
-	print-lisp.c \
-	print-llc.c \
-	print-lldp.c \
-	print-lmp.c \
-	print-loopback.c \
-	print-lspping.c \
-	print-lwapp.c \
-	print-lwres.c \
-	print-m3ua.c \
-	print-medsa.c \
-	print-mobile.c \
-	print-mobility.c \
-	print-mpcp.c \
-	print-mpls.c \
-	print-mptcp.c \
-	print-msdp.c \
-	print-msnlb.c \
-	print-nflog.c \
-	print-nfs.c \
-	print-nsh.c \
-	print-ntp.c \
-	print-null.c \
-	print-olsr.c \
-	print-openflow-1.0.c \
-	print-openflow.c \
-	print-ospf.c \
-	print-ospf6.c \
-	print-otv.c \
-	print-pgm.c \
-	print-pim.c \
-	print-pktap.c \
-	print-ppi.c \
-	print-ppp.c \
-	print-pppoe.c \
-	print-pptp.c \
-	print-radius.c \
-	print-raw.c \
-	print-resp.c \
-	print-rip.c \
-	print-ripng.c \
-	print-rpki-rtr.c \
-	print-rrcp.c \
-	print-rsvp.c \
-	print-rt6.c \
-	print-rtsp.c \
-	print-rx.c \
-	print-sctp.c \
-	print-sflow.c \
-	print-sip.c \
-	print-sl.c \
-	print-sll.c \
-	print-slow.c \
-	print-smtp.c \
-	print-snmp.c \
-	print-stp.c \
-	print-sunatm.c \
-	print-sunrpc.c \
-	print-symantec.c \
-	print-syslog.c \
-	print-tcp.c \
-	print-telnet.c \
-	print-tftp.c \
-	print-timed.c \
-	print-tipc.c \
-	print-token.c \
-	print-udld.c \
-	print-udp.c \
-	print-usb.c \
-	print-vjc.c \
-	print-vqp.c \
-	print-vrrp.c \
-	print-vtp.c \
-	print-vxlan.c \
-	print-vxlan-gpe.c \
-	print-wb.c \
-	print-zephyr.c \
-	print-zeromq.c \
 	signature.c \
 	strtoaddr.c \
 	util-print.c
 
+DISSECTORS = @DISSECTORS@
 LOCALSRC = @LOCALSRC@
 GENSRC = version.c
 LIBOBJS = @LIBOBJS@
 
-LIBNETDISSECT_OBJ=$(LIBNETDISSECT_SRC:.c=.o) ${LOCALSRC:.c=.o} ${LIBOBJS}
+LIBNETDISSECT_OBJ=$(LIBNETDISSECT_SRC:.c=.o) ${DISSECTORS:.c=.o} ${LOCALSRC:.c=.o} ${LIBOBJS}
 LIBNETDISSECT=libnetdissect.a
 
 
@@ -347,6 +206,7 @@ EXTRA_DIST = \
 	mkdep \
 	packetdat.awk \
 	pcap_dump_ftell.c \
+	@ALL_DISSECTORS@ \
 	print-pflog.c \
 	print-smb.c \
 	send-ack.awk \

addrtoname.c

@@ -564,8 +564,10 @@ linkaddr_string(netdissect_options *ndo, const u_char *ep,
 	if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN)
 		return (etheraddr_string(ndo, ep));
 
+#ifndef MINIMAL
 	if (type == LINKADDR_FRELAY)
 		return (q922_string(ndo, ep, len));
+#endif
 
 	tp = lookup_bytestring(ndo, ep, len);
 	if (tp->e_name)
@@ -1200,6 +1202,7 @@ init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask)
 	init_ipxsaparray(ndo);
 }
 
+#ifndef MINIMAL
 const char *
 dnaddr_string(netdissect_options *ndo, u_short dnaddr)
 {
@@ -1219,6 +1222,7 @@ dnaddr_string(netdissect_options *ndo, u_short dnaddr)
 
 	return(tp->name);
 }
+#endif
 
 /* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */
 struct hnamemem *

config.h.in

@@ -244,6 +244,9 @@
 /* if unaligned access fails */
 #undef LBL_ALIGN
 
+/* Minimal build */
+#undef MINIMAL
+
 /* Define to 1 if netinet/ether.h declares `ether_ntohost' */
 #undef NETINET_ETHER_H_DECLARES_ETHER_NTOHOST
 

configure

@@ -623,6 +623,9 @@ ac_subst_vars='LTLIBOBJS
 INSTALL_DATA
 INSTALL_SCRIPT
 INSTALL_PROGRAM
+ALL_DISSECTORS
+DISSECTORS
+MINIMAL
 MAN_MISC_INFO
 MAN_FILE_FORMATS
 LOCALSRC
@@ -704,6 +707,7 @@ enable_smb
 with_user
 with_chroot
 with_sandbox_capsicum
+enable_minimal
 with_system_libpcap
 with_crypto
 with_cap_ng
@@ -1331,6 +1335,8 @@ Optional Features:
   --disable-universal     don't build universal on OS X
   --enable-smb            enable possibly-buggy SMB printer default=yes
   --disable-smb           disable possibly-buggy SMB printer
+  --enable-minimal        Support printing only common protocols, for a
+                          smaller binary
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -4601,6 +4607,41 @@ else
 $as_echo "no" >&6; }
 fi
 
+# Check whether --enable-minimal was given.
+if test "${enable_minimal+set}" = set; then :
+  enableval=$enable_minimal;
+cat >>confdefs.h <<_ACEOF
+#define MINIMAL $enableval
+_ACEOF
+
+
+fi
+
+for i in `ls print-*.c | grep -v print-smb.c | grep -v print-pflog.c`
+do
+	ALL_DISSECTORS="$i $ALL_DISSECTORS"
+done
+if test "x$enable_minimal" = xyes; then :
+
+	DISSECTORS="\
+	print-802_11.c print-aodv.c print-arp.c print-ascii.c \
+	print-bgp.c print-bootp.c print-cdp.c print-domain.c print-eap.c \
+	print-ether.c print-gre.c print-icmp.c print-igmp.c print-ip.c \
+	print-ip6.c print-ip6opts.c print-rt6.c print-frag6.c print-icmp6.c \
+	print-l2tp.c print-lldp.c print-llc.c print-nfs.c print-ntp.c \
+	print-null.c print-olsr.c print-ospf.c print-ppp.c print-pppoe.c \
+	print-pptp.c print-radius.c print-raw.c print-rsvp.c print-sctp.c \
+	print-sip.c print-sll.c print-snmp.c print-stp.c print-sunrpc.c \
+	print-syslog.c print-tcp.c print-telnet.c print-tftp.c print-udp.c \
+	print-ipnet.c print-forces.c"
+
+else
+
+	DISSECTORS=$ALL_DISSECTORS
+
+
+fi
+
 #
 # We must check this before checking whether to check the OS's IPv6,
 # support because, on some platforms (such as SunOS 5.x), the test
@@ -8165,6 +8206,9 @@ fi
 
 
 
+
+
+
 # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
 # incompatible versions:

configure.in

@@ -234,6 +234,34 @@ else
 	AC_MSG_RESULT(no)
 fi
 
+AC_ARG_ENABLE(minimal,
+	AS_HELP_STRING([--enable-minimal], [Support printing only common
+			protocols, for a smaller binary]),
+	[AC_DEFINE_UNQUOTED([MINIMAL], [$enableval], [Minimal build])]
+)
+for i in `ls print-*.c | grep -v print-smb.c | grep -v print-pflog.c`
+do
+	ALL_DISSECTORS="$i $ALL_DISSECTORS"
+done
+AS_IF([test "x$enable_minimal" = xyes],
+  [
+	DISSECTORS="\
+	print-802_11.c print-aodv.c print-arp.c print-ascii.c \
+	print-bgp.c print-bootp.c print-cdp.c print-domain.c print-eap.c \
+	print-ether.c print-gre.c print-icmp.c print-igmp.c print-ip.c \
+	print-ip6.c print-ip6opts.c print-rt6.c print-frag6.c print-icmp6.c \
+	print-l2tp.c print-lldp.c print-llc.c print-nfs.c print-ntp.c \
+	print-null.c print-olsr.c print-ospf.c print-ppp.c print-pppoe.c \
+	print-pptp.c print-radius.c print-raw.c print-rsvp.c print-sctp.c \
+	print-sip.c print-sll.c print-snmp.c print-stp.c print-sunrpc.c \
+	print-syslog.c print-tcp.c print-telnet.c print-tftp.c print-udp.c \
+	print-ipnet.c print-forces.c"
+  ],
+  [
+	DISSECTORS=$ALL_DISSECTORS
+  ]
+)
+
 #
 # We must check this before checking whether to check the OS's IPv6,
 # support because, on some platforms (such as SunOS 5.x), the test
@@ -966,6 +994,9 @@ AC_SUBST(V_PCAPDEP)
 AC_SUBST(LOCALSRC)
 AC_SUBST(MAN_FILE_FORMATS)
 AC_SUBST(MAN_MISC_INFO)
+AC_SUBST(MINIMAL)
+AC_SUBST(DISSECTORS)
+AC_SUBST(ALL_DISSECTORS)
 
 AC_PROG_INSTALL
 

print-ether.c

@@ -332,6 +332,7 @@ ethertype_print(netdissect_options *ndo,
 	        arp_print(ndo, p, length, caplen);
 		return (1);
 
+#ifndef MINIMAL
 	case ETHERTYPE_DN:
 		decnet_print(ndo, p, length, caplen);
 		return (1);
@@ -354,6 +355,7 @@ ethertype_print(netdissect_options *ndo,
 	case ETHERTYPE_ISO:
 		isoclns_print(ndo, p + 1, length - 1, length - 1);
 		return(1);
+#endif
 
 	case ETHERTYPE_PPPOED:
 	case ETHERTYPE_PPPOES:
@@ -366,9 +368,11 @@ ethertype_print(netdissect_options *ndo,
 	        eap_print(ndo, p, length);
 		return (1);
 
+#ifndef MINIMAL
 	case ETHERTYPE_RRCP:
 	        rrcp_print(ndo, p - 14 , length + 14);
 		return (1);
+#endif
 
 	case ETHERTYPE_PPP:
 		if (length) {
@@ -377,6 +381,7 @@ ethertype_print(netdissect_options *ndo,
 		}
 		return (1);
 
+#ifndef MINIMAL
 	case ETHERTYPE_MPCP:
 	        mpcp_print(ndo, p, length);
 		return (1);
@@ -389,11 +394,13 @@ ethertype_print(netdissect_options *ndo,
 	case ETHERTYPE_CFM_OLD:
 		cfm_print(ndo, p, length);
 		return (1);
+#endif
 
 	case ETHERTYPE_LLDP:
 		lldp_print(ndo, p, length);
 		return (1);
 
+#ifndef MINIMAL
         case ETHERTYPE_LOOPBACK:
 		loopback_print(ndo, p, length);
                 return (1);
@@ -427,6 +434,7 @@ ethertype_print(netdissect_options *ndo,
 	case ETHERTYPE_MEDSA:
 		medsa_print(ndo, p, length, caplen);
 		return (1);
+#endif
 
 	case ETHERTYPE_LAT:
 	case ETHERTYPE_SCA: