tcpdump.c: Fix a warning when HAVE_FORK and HAVE_VFORK are not defined

[tcpdump] / tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index 77fc084ea2d5379466eb21dc778873caf7fb3f46..d2af6e6908b45140df68e5452c06281cbf7bc34e 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -34,6 +34,9 @@
  */
 
 #include <config.h>
+#ifndef TCPDUMP_CONFIG_H_
+#error "The included config.h header is not from the tcpdump build."
+#endif
 
 #include "netdissect-stdinc.h"
 
@@ -222,7 +225,9 @@ static int64_t parse_int64(const char *argname, const char *string,
     char **endp, int64_t minval, int64_t maxval, int base);
 static void (*setsignal (int sig, void (*func)(int)))(int);
 static void cleanup(int);
+#if defined(HAVE_FORK) || defined(HAVE_VFORK)
 static void child_cleanup(int);
+#endif
 static void print_version(FILE *);
 static void print_usage(FILE *);