X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/a689cf870986a04cf7a8b4fc74cab10e808f3c93..1c67c0188bc9cd5095154efde3011bb6ac1b3130:/ftmacros.h

diff --git a/ftmacros.h b/ftmacros.h
index c9263f64..3cd75056 100644
--- a/ftmacros.h
+++ b/ftmacros.h
@@ -113,7 +113,10 @@
   #ifndef _DEFAULT_SOURCE
     #define _DEFAULT_SOURCE
   #endif
-  #define _BSD_SOURCE
+  /* Avoid redefining _BSD_SOURCE if it's already defined as for ex. 1 */
+  #ifndef _BSD_SOURCE
+    #define _BSD_SOURCE
+  #endif
 #endif
 
 #endif