buildroot/package/tcpdump/tcpdump.00-extern-inline-fixup.patch

--- tcpdump-3.9.5.oorig/tcpdump-stdinc.h	2006-06-23 04:07:27.000000000 +0200
+++ tcpdump-3.9.5/tcpdump-stdinc.h	2007-05-14 10:26:25.000000000 +0200
@@ -149,15 +149,15 @@ typedef char* caddr_t;
   #undef htonl
   #undef htons
 
-  extern __inline__ unsigned long __ntohl (unsigned long x);
-  extern __inline__ unsigned short __ntohs (unsigned short x);
+  static __inline__ unsigned long __ntohl (unsigned long x);
+  static __inline__ unsigned short __ntohs (unsigned short x);
 
   #define ntohl(x)  __ntohl(x)
   #define ntohs(x)  __ntohs(x)
   #define htonl(x)  __ntohl(x)
   #define htons(x)  __ntohs(x)
 
-  extern __inline__ unsigned long __ntohl (unsigned long x)
+  static __inline__ unsigned long __ntohl (unsigned long x)
   {
     __asm__ ("xchgb %b0, %h0\n\t"   /* swap lower bytes  */
              "rorl  $16, %0\n\t"    /* swap words        */
@@ -166,7 +166,7 @@ typedef char* caddr_t;
     return (x);
   }
 
-  extern __inline__ unsigned short __ntohs (unsigned short x)
+  static __inline__ unsigned short __ntohs (unsigned short x)
   {
     __asm__ ("xchgb %b0, %h0"       /* swap bytes */
             : "=q" (x) : "0" (x));