X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/a689cf870986a04cf7a8b4fc74cab10e808f3c93..dcae3b01d76f9a040f2a6e3d2c861c25c2d60a73:/ftmacros.h

diff --git a/ftmacros.h b/ftmacros.h
index c9263f64..7975463b 100644
--- a/ftmacros.h
+++ b/ftmacros.h
@@ -45,7 +45,12 @@
  * namespace to the maximum extent possible"?
  */
 #if defined(sun) || defined(__sun)
-  #define __EXTENSIONS__
+  /*
+   * On Solaris Clang defines __EXTENSIONS__ automatically.
+   */
+  #ifndef __EXTENSIONS__
+    #define __EXTENSIONS__
+  #endif
 
   /*
    * We also need to define _XPG4_2 in order to get
@@ -113,7 +118,10 @@
   #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