Require config.h to be from the tcpdump build.

[tcpdump] / tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index 77fc084ea2d5379466eb21dc778873caf7fb3f46..36c7325967cb4fa5f845ff8b47e54241f181c153 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"