X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/379120bf2593f7ff93e939239b2070444e996be3..44bbabb570db6e700a31469a0faf2ac27bf3bfe0:/src/src/exim.h

diff --git a/src/src/exim.h b/src/src/exim.h
index b9b2ab0eb..626d33dae 100644
--- a/src/src/exim.h
+++ b/src/src/exim.h
@@ -1,5 +1,3 @@
-/* $Cambridge: exim/src/src/exim.h,v 1.27 2009/11/16 19:50:36 nm4 Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
@@ -50,6 +48,11 @@ making unique names. */
 #define LOCALHOST_MAX  10
 #endif
 
+/* If not overriden by os.h, dynamic libraries have filenames ending .so */
+#ifndef DYNLIB_FN_EXT
+# define DYNLIB_FN_EXT "so"
+#endif
+
 /* ANSI C standard includes */
 
 #include <ctype.h>
@@ -479,13 +482,15 @@ requires various things that are set therein. */
 #endif
 
 /* Define a union to hold either an IPv4 or an IPv6 sockaddr structure; this
-simplifies some of the coding. */
+simplifies some of the coding.  We include the sockaddr to reduce type-punning
+issues in C99. */
 
 union sockaddr_46 {
   struct sockaddr_in v4;
   #if HAVE_IPV6
   struct sockaddr_in6 v6;
   #endif
+  struct sockaddr v0;
 };
 
 /* If SUPPORT_TLS is not defined, ensure that USE_GNUTLS is also not defined
@@ -533,5 +538,4 @@ default to EDQUOT if it exists, otherwise ENOSPC. */
   #endif
 #endif
 
-
 /* End of exim.h */