From 73a6278b93dc56504eb9355ee82622f7f47e93ad Mon Sep 17 00:00:00 2001
From: paulc <paulc@acf43c95-373e-0410-b603-e72c3f656dc1>
Date: Mon, 1 Jun 2009 17:13:45 +0000
Subject: [PATCH] Made resolver checks stricter to avoid false positives
 because of implicit declaration.

git-svn-id: http://voip.null.ro/svn/yate@2675 acf43c95-373e-0410-b603-e72c3f656dc1
---
 configure.in | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/configure.in b/configure.in
index 4b0fdb5d..37592669 100644
--- a/configure.in
+++ b/configure.in
@@ -235,14 +235,16 @@ RESOLV_LIB=""
 AC_MSG_CHECKING([for resolver library])
 AC_LANG_SAVE
 AC_LANG_C
-AC_TRY_LINK([#include <netinet/in.h>
-#include <arpa/nameser.h>
-#include <resolv.h>],[res_init();],[HAVE_RESOLV=yes],[HAVE_RESOLV=no])
 SAVE_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -Wall -Werror $GCC_UNRESOLVED_SYMBOLS"
 AC_TRY_LINK([#include <netinet/in.h>
 #include <arpa/nameser.h>
+#include <resolv.h>],[res_init();],[HAVE_RESOLV=yes],[HAVE_RESOLV=no])
+if [[ "x$HAVE_RESOLV" != "xno" ]]; then
+AC_TRY_LINK([#include <netinet/in.h>
+#include <arpa/nameser.h>
 #include <resolv.h>],[unsigned char x[2]; res_query("",0,0,x,0);],[],[RESOLV_LIB=-lresolv])
+fi
 CFLAGS="$SAVE_CFLAGS"
 AC_LANG_RESTORE
 AC_MSG_RESULT([$HAVE_RESOLV $RESOLV_LIB])