add -fvisibility=hidden to CC flags, mark XXX_main functions

EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so

33 files changed, 41 insertions, 41 deletions

diff --git a/networking/arp.c b/networking/arp.c
index 8cdee1832..36985fc5a 100644
--- a/networking/arp.c
+++ b/networking/arp.c
@@ -434,7 +434,7 @@ static int arp_show(char *name)
 	return 0;
 }
 
-int arp_main(int argc, char **argv);
+int arp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int arp_main(int argc, char **argv)
 {
 	char *hw_type;
diff --git a/networking/arping.c b/networking/arping.c
index a2c4c2247..44615d5b1 100644
--- a/networking/arping.c
+++ b/networking/arping.c
@@ -227,7 +227,7 @@ static int recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM)
 	return 1;
 }
 
-int arping_main(int argc, char **argv);
+int arping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int arping_main(int argc, char **argv)
 {
 	const char *device = "eth0";
diff --git a/networking/dnsd.c b/networking/dnsd.c
index c906de32a..8f01d5c06 100644
--- a/networking/dnsd.c
+++ b/networking/dnsd.c
@@ -328,7 +328,7 @@ static void interrupt(int x)
 	exit(2);
 }
 
-int dnsd_main(int argc, char **argv);
+int dnsd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int dnsd_main(int argc, char **argv)
 {
 	const char *listen_interface = "0.0.0.0";
diff --git a/networking/ether-wake.c b/networking/ether-wake.c
index fc26ad07d..b752152e1 100644
--- a/networking/ether-wake.c
+++ b/networking/ether-wake.c
@@ -178,7 +178,7 @@ static int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd)
 	return byte_cnt;
 }
 
-int ether_wake_main(int argc, char **argv);
+int ether_wake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ether_wake_main(int argc, char **argv)
 {
 	const char *ifname = "eth0";
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index 58847a9f2..587f000ce 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -296,7 +296,7 @@ static const char ftpgetput_longopts[] ALIGN1 =
 	;
 #endif
 
-int ftpgetput_main(int argc, char **argv);
+int ftpgetput_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ftpgetput_main(int argc, char **argv)
 {
 	/* content-length of the file */
diff --git a/networking/hostname.c b/networking/hostname.c
index 6783dbacb..2c224bef9 100644
--- a/networking/hostname.c
+++ b/networking/hostname.c
@@ -42,7 +42,7 @@ static void do_sethostname(char *s, int isfile)
 	}
 }
 
-int hostname_main(int argc, char **argv);
+int hostname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int hostname_main(int argc, char **argv)
 {
 	enum {
diff --git a/networking/httpd.c b/networking/httpd.c
index 06a5a56bc..61185025c 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -2111,7 +2111,7 @@ enum {
 };
 
 
-int httpd_main(int argc, char **argv);
+int httpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int httpd_main(int argc, char **argv)
 {
 	int server_socket = server_socket; /* for gcc */
diff --git a/networking/ifconfig.c b/networking/ifconfig.c
index 0d53676cd..3dcb118ee 100644
--- a/networking/ifconfig.c
+++ b/networking/ifconfig.c
@@ -261,7 +261,7 @@ static int in_ether(const char *bufp, struct sockaddr *sap);
  * Our main function.
  */
 
-int ifconfig_main(int argc, char **argv);
+int ifconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ifconfig_main(int argc, char **argv)
 {
 	struct ifreq ifr;
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index bd53f93e8..c4d72524d 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -1133,7 +1133,7 @@ static llist_t *read_iface_state(void)
 }
 
 
-int ifupdown_main(int argc, char **argv);
+int ifupdown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ifupdown_main(int argc, char **argv)
 {
 	int (*cmds)(struct interface_defn_t *) = NULL;
diff --git a/networking/inetd.c b/networking/inetd.c
index 6d72e13e8..9ea7f9cc1 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -1303,7 +1303,7 @@ inetd_setproctitle(char *a, int s)
 #endif
 
 
-int inetd_main(int argc, char **argv);
+int inetd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int inetd_main(int argc, char **argv)
 {
 	servtab_t *sep;
diff --git a/networking/ip.c b/networking/ip.c
index c82d731c1..3ea1b62e1 100644
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -38,7 +38,7 @@ static int ip_do(int argc, char **argv)
 }
 
 #if ENABLE_FEATURE_IP_ADDRESS
-int ipaddr_main(int argc, char **argv);
+int ipaddr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ipaddr_main(int argc, char **argv)
 {
     ip_func = do_ipaddr;
@@ -46,7 +46,7 @@ int ipaddr_main(int argc, char **argv)
 }
 #endif
 #if ENABLE_FEATURE_IP_LINK
-int iplink_main(int argc, char **argv);
+int iplink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int iplink_main(int argc, char **argv)
 {
     ip_func = do_iplink;
@@ -54,7 +54,7 @@ int iplink_main(int argc, char **argv)
 }
 #endif
 #if ENABLE_FEATURE_IP_ROUTE
-int iproute_main(int argc, char **argv);
+int iproute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int iproute_main(int argc, char **argv)
 {
     ip_func = do_iproute;
@@ -62,7 +62,7 @@ int iproute_main(int argc, char **argv)
 }
 #endif
 #if ENABLE_FEATURE_IP_RULE
-int iprule_main(int argc, char **argv);
+int iprule_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int iprule_main(int argc, char **argv)
 {
     ip_func = do_iprule;
@@ -70,7 +70,7 @@ int iprule_main(int argc, char **argv)
 }
 #endif
 #if ENABLE_FEATURE_IP_TUNNEL
-int iptunnel_main(int argc, char **argv);
+int iptunnel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int iptunnel_main(int argc, char **argv)
 {
     ip_func = do_iptunnel;
@@ -79,7 +79,7 @@ int iptunnel_main(int argc, char **argv)
 #endif
 
 
-int ip_main(int argc, char **argv);
+int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ip_main(int argc, char **argv)
 {
 	static const char keywords[] ALIGN1 =
diff --git a/networking/ipcalc.c b/networking/ipcalc.c
index 759704379..d7c968c25 100644
--- a/networking/ipcalc.c
+++ b/networking/ipcalc.c
@@ -75,7 +75,7 @@ int get_prefix(unsigned long netmask);
 		;
 #endif
 
-int ipcalc_main(int argc, char **argv);
+int ipcalc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ipcalc_main(int argc, char **argv)
 {
 	unsigned opt;
diff --git a/networking/isrv_identd.c b/networking/isrv_identd.c
index 9bc3b607d..a93de1244 100644
--- a/networking/isrv_identd.c
+++ b/networking/isrv_identd.c
@@ -92,7 +92,7 @@ static void inetd_mode(void)
 	while (do_rd(0, (void*)&buf) == 0);
 }
 
-int fakeidentd_main(int argc, char **argv);
+int fakeidentd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int fakeidentd_main(int argc, char **argv)
 {
 	enum {
diff --git a/networking/nameif.c b/networking/nameif.c
index 2114516a7..0369c0807 100644
--- a/networking/nameif.c
+++ b/networking/nameif.c
@@ -55,7 +55,7 @@ static struct ether_addr *cc_macaddr(const char *str_macaddr)
 	return mac;
 }
 
-int nameif_main(int argc, char **argv);
+int nameif_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int nameif_main(int argc, char **argv)
 {
 	mactable_t *clist = NULL;
diff --git a/networking/nc.c b/networking/nc.c
index 19750e59e..b2f590adf 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -22,7 +22,7 @@ static void timeout(int signum)
 	bb_error_msg_and_die("timed out");
 }
 
-int nc_main(int argc, char **argv);
+int nc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int nc_main(int argc, char **argv)
 {
 	/* sfd sits _here_ only because of "repeat" option (-l -l). */
diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c
index ab8246531..cbc0a6471 100644
--- a/networking/nc_bloaty.c
+++ b/networking/nc_bloaty.c
@@ -668,7 +668,7 @@ Debug("wrote %d to net, errno %d", rr, errno);
 } /* readwrite */
 
 /* main: now we pull it all together... */
-int nc_main(int argc, char **argv);
+int nc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int nc_main(int argc, char **argv)
 {
 	char *str_p, *str_s, *str_w;
diff --git a/networking/netstat.c b/networking/netstat.c
index e5ed10eb4..11f141947 100644
--- a/networking/netstat.c
+++ b/networking/netstat.c
@@ -484,7 +484,7 @@ static void do_info(const char *file, const char *name, void (*proc)(int, const
  * Our main function.
  */
 
-int netstat_main(int argc, char **argv);
+int netstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int netstat_main(int argc, char **argv)
 {
 	const char *net_conn_line_header = PRINT_NET_CONN_HEADER;
diff --git a/networking/nslookup.c b/networking/nslookup.c
index fab7e3efc..183ae152d 100644
--- a/networking/nslookup.c
+++ b/networking/nslookup.c
@@ -127,7 +127,7 @@ static void set_default_dns(char *server)
 	}
 }
 
-int nslookup_main(int argc, char **argv);
+int nslookup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int nslookup_main(int argc, char **argv)
 {
 	/* We allow 1 or 2 arguments.
diff --git a/networking/ping.c b/networking/ping.c
index 5d61cd768..8b70d9a33 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -173,7 +173,7 @@ static void ping6(len_and_sockaddr *lsa)
 }
 #endif
 
-int ping_main(int argc, char **argv);
+int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ping_main(int argc, char **argv)
 {
 	len_and_sockaddr *lsa;
@@ -676,7 +676,7 @@ static void ping(len_and_sockaddr *lsa)
 		ping4(lsa);
 }
 
-int ping_main(int argc, char **argv);
+int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ping_main(int argc, char **argv)
 {
 	len_and_sockaddr *lsa;
@@ -724,7 +724,7 @@ int ping_main(int argc, char **argv)
 
 
 #if ENABLE_PING6
-int ping6_main(int argc, char **argv);
+int ping6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ping6_main(int argc, char **argv)
 {
 	argv[0] = (char*)"-6";
diff --git a/networking/pscan.c b/networking/pscan.c
index 5ae3e61dd..d18f8dbd9 100644
--- a/networking/pscan.c
+++ b/networking/pscan.c
@@ -30,7 +30,7 @@ static const char *port_name(unsigned port)
 /* We don't expect to see 1000+ seconds delay, unsigned is enough */
 #define MONOTONIC_US() ((unsigned)monotonic_us())
 
-int pscan_main(int argc, char **argv);
+int pscan_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int pscan_main(int argc, char **argv)
 {
 	const char *opt_max_port = "1024";      /* -P: default max port */
diff --git a/networking/route.c b/networking/route.c
index 55a6c2155..3425e6397 100644
--- a/networking/route.c
+++ b/networking/route.c
@@ -640,7 +640,7 @@ static const char tbl_verb[] ALIGN1 =
 	"\010\002delete"  /* Since it's last, we can save a byte. */
 ;
 
-int route_main(int argc, char **argv);
+int route_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int route_main(int argc, char **argv)
 {
 	unsigned opt;
diff --git a/networking/slattach.c b/networking/slattach.c
index ce6d705a8..17df4fa9e 100644
--- a/networking/slattach.c
+++ b/networking/slattach.c
@@ -119,7 +119,7 @@ static void sig_handler(int signo)
 	restore_state_and_exit(0);
 }
 
-int slattach_main(int argc, char **argv);
+int slattach_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int slattach_main(int argc, char **argv)
 {
 	/* Line discipline code table */
diff --git a/networking/telnet.c b/networking/telnet.c
index ae526fa9e..9085c5848 100644
--- a/networking/telnet.c
+++ b/networking/telnet.c
@@ -550,8 +550,8 @@ static void cookmode(void)
 		tcsetattr(0, TCSADRAIN, &G.termios_def);
 }
 
-int telnet_main(int argc, char** argv);
-int telnet_main(int argc, char** argv)
+int telnet_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int telnet_main(int argc, char **argv)
 {
 	char *host;
 	int port;
diff --git a/networking/telnetd.c b/networking/telnetd.c
index b21991212..27dde1ae4 100644
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -360,7 +360,7 @@ void free_session(struct tsession *ts);
 #endif
 
 
-int telnetd_main(int argc, char **argv);
+int telnetd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int telnetd_main(int argc, char **argv)
 {
 	fd_set rdfdset, wrfdset;
diff --git a/networking/tftp.c b/networking/tftp.c
index 59f53ae4a..a2683971a 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -391,7 +391,7 @@ static int tftp( USE_GETPUT(const int cmd,)
 	return finished == 0; /* returns 1 on failure */
 }
 
-int tftp_main(int argc, char **argv);
+int tftp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int tftp_main(int argc, char **argv)
 {
 	len_and_sockaddr *peer_lsa;
diff --git a/networking/traceroute.c b/networking/traceroute.c
index e8d486f4c..773fc6a8b 100644
--- a/networking/traceroute.c
+++ b/networking/traceroute.c
@@ -889,7 +889,7 @@ print_delta_ms(unsigned t1p, unsigned t2p)
 	printf("  %u.%03u ms", tt/1000, tt%1000);
 }
 
-int traceroute_main(int argc, char **argv);
+int traceroute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int traceroute_main(int argc, char **argv)
 {
 	int code, n;
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 21b496c0b..e00379b2a 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -140,7 +140,7 @@ static uint8_t* alloc_dhcp_option(int code, const char *str, int extra)
 }
 
 
-int udhcpc_main(int argc, char **argv);
+int udhcpc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int udhcpc_main(int argc, char **argv)
 {
 	uint8_t *temp, *message;
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index 4343f1c0e..9679e086c 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -21,7 +21,7 @@ struct dhcpOfferedAddr *leases;
 /* struct server_config_t server_config is in bb_common_bufsiz1 */
 
 
-int udhcpd_main(int argc, char **argv);
+int udhcpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int udhcpd_main(int argc, char **argv)
 {
 	fd_set rfds;
diff --git a/networking/udhcp/dhcprelay.c b/networking/udhcp/dhcprelay.c
index 91fcb151b..42378d602 100644
--- a/networking/udhcp/dhcprelay.c
+++ b/networking/udhcp/dhcprelay.c
@@ -279,7 +279,7 @@ static void dhcprelay_loop(int *fds, int num_sockets, int max_socket, char **cli
 	}
 }
 
-int dhcprelay_main(int argc, char **argv);
+int dhcprelay_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int dhcprelay_main(int argc, char **argv)
 {
 	int num_sockets, max_socket;
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 3e931c0b5..218e6bc57 100644
--- a/networking/udhcp/dumpleases.c
+++ b/networking/udhcp/dumpleases.c
@@ -7,7 +7,7 @@
 #include "common.h"
 #include "dhcpd.h"
 
-int dumpleases_main(int argc, char **argv);
+int dumpleases_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int dumpleases_main(int argc, char **argv)
 {
 	int fd;
diff --git a/networking/vconfig.c b/networking/vconfig.c
index 8bd88701f..7b6c2fa04 100644
--- a/networking/vconfig.c
+++ b/networking/vconfig.c
@@ -106,7 +106,7 @@ static const char name_types[] ALIGN1 = {
 
 static const char conf_file_name[] ALIGN1 = "/proc/net/vlan/config";
 
-int vconfig_main(int argc, char **argv);
+int vconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int vconfig_main(int argc, char **argv)
 {
 	struct vlan_ioctl_args ifr;
diff --git a/networking/wget.c b/networking/wget.c
index 3f9954cf5..b12d19af2 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -391,7 +391,7 @@ static char *gethdr(char *buf, size_t bufsiz, FILE *fp /*, int *istrunc*/)
 }
 
 
-int wget_main(int argc, char **argv);
+int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int wget_main(int argc, char **argv)
 {
 	char buf[512];
diff --git a/networking/zcip.c b/networking/zcip.c
index 62350c640..a16a6420c 100644
--- a/networking/zcip.c
+++ b/networking/zcip.c
@@ -156,7 +156,7 @@ static unsigned ALWAYS_INLINE ms_rdelay(unsigned secs)
 /**
  * main program
  */
-int zcip_main(int argc, char **argv);
+int zcip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int zcip_main(int argc, char **argv)
 {
 	int state = PROBE;