From fa600e78c089deb85d7f6b321c2f1f1a5fb67484 Mon Sep 17 00:00:00 2001
From: nbk <nbk>
Date: Sat, 2 Jun 2007 13:49:58 +0000
Subject: [PATCH] 	Fix gethostbyaddr_r() detection for FreeBSD. (closes:
 #454) 	Patch from David Wood <david@wood2.org.uk>

---
 configure.in | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/configure.in b/configure.in
index 30d5f11..d776f94 100644
--- a/configure.in
+++ b/configure.in
@@ -845,9 +845,20 @@ gethostbyaddrrstyle=""
 AC_MSG_CHECKING([gethostbyaddr_r() syntax])
 case "$host" in
 *-freebsd*)
-	AC_DEFINE(GETHOSTBYADDRRSTYLE, BSDSTYLE)
-	gethostbyaddrrstyle=BSD
-	AC_MSG_WARN([FreeBSD overridden to BSD-style])
+dnl With FreeBSD, check if there's a prototype for gethostbyaddr_r.
+dnl Some versions (FreeBSD 5.1?) have a symbol but no prototype - so we
+dnl override this test to BSDSTYLE. FreeBSD 6.2 and up have proper GNU
+dnl style support.
+	AC_CHECK_DECLS([gethostbyaddr_r], [], [
+		AC_DEFINE(GETHOSTBYADDRRSTYLE, BSDSTYLE,
+			[style of gethostbyaddr_r functions ])
+		gethostbyaddrrstyle=BSD
+		AC_MSG_WARN([FreeBSD overridden to BSD-style])
+	], [
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+])
 	;;
 esac
 if test "x$gethostbyaddrrstyle" = "x"; then
-- 
2.1.4