Starting with libc 2.20, this file would fail to build with "NULL undeclared". Include the fine header to solve that. --- net-tools-1.60/lib/ec_hw.c 1999-11-20 22:02:53.000000000 +0100 +++ net-tools-1.60/lib/ec_hw.c 2014-10-06 22:48:43.811027768 +0200 @@ -16,6 +16,7 @@ #if HAVE_HWEC +#include <stddef.h> #include <net/if_arp.h> #include "net-support.h" Avoid "label at end of compound statement" errors. --- net-tools-1.60/lib/inet_sr.c 2000-02-20 22:46:45.000000000 +0100 +++ net-tools-1.60/lib/inet_sr.c 2014-10-06 22:51:22.575023126 +0200 @@ -104,7 +104,6 @@ static int INET_setroute(int action, int isnet = 1; break; case 2: isnet = 0; break; - default: } /* Fill in the other fields. */ --- net-tools-1.60/hostname.c 2001-04-08 19:04:23.000000000 +0200 +++ net-tools-1.60/hostname.c 2014-10-06 23:01:04.235006119 +0200 @@ -77,7 +77,6 @@ static void setnname(char *nname) case EINVAL: fprintf(stderr, _("%s: name too long\n"), program_name); break; - default: } exit(1); } @@ -97,7 +96,6 @@ static void sethname(char *hname) case EINVAL: fprintf(stderr, _("%s: name too long\n"), program_name); break; - default: } exit(1); }; @@ -116,7 +114,6 @@ static void setdname(char *dname) case EINVAL: fprintf(stderr, _("%s: name too long\n"), program_name); break; - default: } exit(1); }; @@ -173,7 +170,6 @@ static void showhname(char *hname, int c *p = '\0'; printf("%s\n", hp->h_name); break; - default: } } Work around the assumption that an 'x25_address' typedef exists. --- net-tools-1.60/lib/x25_sr.c 2000-05-20 15:38:10.000000000 +0200 +++ net-tools-1.60/lib/x25_sr.c 2014-10-06 22:59:35.787008705 +0200 @@ -77,7 +77,7 @@ static int X25_setroute(int action, int rt.sigdigits=sigdigits; /* x25_route_struct.address isn't type struct sockaddr_x25, Why? */ - memcpy(&rt.address, &sx25.sx25_addr, sizeof(x25_address)); + memcpy(&rt.address, &sx25.sx25_addr, sizeof(struct x25_address)); while (*args) { if (!strcmp(*args,"device") || !strcmp(*args,"dev")) { Fix the multi-line string literal syntax. --- net-tools-1.60/mii-tool.c 2000-05-21 16:31:17.000000000 +0200 +++ net-tools-1.60/mii-tool.c 2014-10-06 23:07:42.002994489 +0200 @@ -379,16 +379,16 @@ static void watch_one_xcvr(int skfd, cha /*--------------------------------------------------------------------*/ const char *usage = -"usage: %s [-VvRrwl] [-A media,... | -F media] [interface ...] - -V, --version display version information - -v, --verbose more verbose output - -R, --reset reset MII to poweron state - -r, --restart restart autonegotiation - -w, --watch monitor for link status changes - -l, --log with -w, write events to syslog - -A, --advertise=media,... advertise only specified media - -F, --force=media force specified media technology -media: 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD, +"usage: %s [-VvRrwl] [-A media,... | -F media] [interface ...]\n\ + -V, --version display version information\n\ + -v, --verbose more verbose output\n\ + -R, --reset reset MII to poweron state\n\ + -r, --restart restart autonegotiation\n\ + -w, --watch monitor for link status changes\n\ + -l, --log with -w, write events to syslog\n\ + -A, --advertise=media,... advertise only specified media\n\ + -F, --force=media force specified media technology\n\ +media: 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD,\n\ (to advertise both HD and FD) 100baseTx, 10baseT\n"; int main(int argc, char **argv)