removed all system headers except the strict minimum

src/netif/ppp/auth.c

@@ -70,6 +70,7 @@
 
 #include "lwip/opt.h"
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <stddef.h>
 #include <stdlib.h>
@@ -80,21 +81,16 @@
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#if 0
 #include <sys/socket.h>
 #include <utmp.h>
-#endif
 #include <fcntl.h>
 #if defined(_PATH_LASTLOG) && defined(__linux__)
 #include <lastlog.h>
 #endif
 
-#if 0
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
-#endif
-
 
 #ifdef HAS_SHADOW
 #include <shadow.h>
@@ -102,7 +98,9 @@
 #define PW_PPP PW_LOGIN
 #endif
 #endif
+
 #include <time.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/chap-md5.c

@@ -31,8 +31,10 @@
 #include "lwip/opt.h"
 #if PPP_SUPPORT && CHAP_SUPPORT  /* don't build if not configured for use in lwipopts.h */
 
+#if 0 /* UNUSED */
 #include <stdlib.h>
 #include <string.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/chap-new.c

@@ -33,8 +33,10 @@
 
 #define RCSID	"$Id: chap-new.c,v 1.9 2007/06/19 02:08:35 carlsonj Exp $"
 
+#if 0 /* UNUSED */
 #include <stdlib.h>
 #include <string.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/chap_ms.c

@@ -77,6 +77,7 @@
 #include "lwip/opt.h"
 #if PPP_SUPPORT && MSCHAP_SUPPORT  /* don't build if not configured for use in lwipopts.h */
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -84,6 +85,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <unistd.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/fsm.c

@@ -50,9 +50,11 @@
  * Deal with variable outgoing MTU.
  */
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/ipcp.c

@@ -48,19 +48,17 @@
  * TODO:
  */
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
-#if 0
 #include <netdb.h>
-#endif
 #include <sys/param.h>
 #include <sys/types.h>
-#if 0
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
-#endif
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/lcp.c

@@ -46,9 +46,11 @@
  * TODO:
  */
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/ppp.h

@@ -10,16 +10,7 @@
 #ifndef PPPMY_H_
 #define PPPMY_H_
 
-#include "lwip/netif.h"
+#include <stdio.h> /* formats */
-#include "lwip/def.h"
-#include "lwip/timers.h"
-
-#include "pppdebug.h"
-#include "net/ppp_defs.h" /* FIXME: merge linux/ppp_defs.h content here */
-
-#ifdef INET6
-#include "eui64.h"
-#endif
 
 #if defined(__STDC__)
 #include <stdarg.h>
@@ -31,6 +22,17 @@
 #define volatile
 #endif
 
+#include "lwip/netif.h"
+#include "lwip/def.h"
+#include "lwip/timers.h"
+
+#include "pppdebug.h"
+#include "net/ppp_defs.h" /* FIXME: merge linux/ppp_defs.h content here */
+
+#ifdef INET6
+#include "eui64.h"
+#endif
+
 /*
  * Limits.
  */

src/netif/ppp/ppp_oe.c

@@ -69,20 +69,20 @@
  */
 
 #include "lwip/opt.h"
-
 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
 
-#include "netif/ppp_oe.h"
+#if 0 /* UNUSED */
-
+#include <string.h>
-#include "ppp.h"
+#include <stdio.h>
+#endif /* UNUSED */
 
 #include "lwip/timers.h"
 #include "lwip/memp.h"
 #include "lwip/stats.h"
 
-#include <string.h>
+#include "ppp.h"
-#include <stdio.h>
 
+#include "netif/ppp_oe.h"
 
 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
 #define PPPOE_ADD_16(PTR, VAL) \

src/netif/ppp/upap.c

@@ -47,8 +47,10 @@
  * TODO:
  */
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <string.h>
+#endif /* UNUSED */
 
 #include "ppp.h"
 

src/netif/ppp/utils.c

@@ -32,6 +32,7 @@
 
 #define RCSID	"$Id: utils.c,v 1.25 2008/06/03 12:06:37 paulus Exp $"
 
+#if 0 /* UNUSED */
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
@@ -40,14 +41,10 @@
 #include <signal.h>
 #include <errno.h>
 #include <fcntl.h>
-#if 0
 #include <syslog.h>
 #include <netdb.h>
-#endif
 #include <time.h>
-#if 0
 #include <utmp.h>
-#endif
 #include <pwd.h>
 #include <sys/param.h>
 #include <sys/types.h>
@@ -55,13 +52,14 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
-#if 0
 #include <sys/socket.h>
 #include <netinet/in.h>
-#endif
 #ifdef SVR4
 #include <sys/mkdev.h>
 #endif
+#endif /* UNUSED */
+
+#include <ctype.h>  /* isdigit() */
 
 #include "ppp.h"
 
@@ -175,7 +173,9 @@ vslprintf(buf, buflen, fmt, args)
     char *str, *f, *buf0;
     unsigned char *p;
     char num[32];
+#if 0 /* need port */
     time_t t;
+#endif /* need port */
     u_int32_t ip;
     static char hexchars[] = "0123456789abcdef";
 #if PRINTPKT_SUPPORT
@@ -313,12 +313,14 @@ vslprintf(buf, buflen, fmt, args)
 	    buflen -= n;
 	    continue;
 #endif
+#if 0 /* need port */
 	case 't':
 	    time(&t);
 	    str = ctime(&t);
 	    str += 4;		/* chop off the day name */
 	    str[15] = 0;	/* chop off year and newline */
 	    break;
+#endif /* need port */
 	case 'v':		/* "visible" string */
 	case 'q':		/* quoted string */
 	    quoted = c == 'q';