diff -up c-ares-1.7.0/configure.optflags c-ares-1.7.0/configure
--- c-ares-1.7.0/configure.optflags	2009-11-30 16:10:42.000000000 -0500
+++ c-ares-1.7.0/configure	2009-12-01 11:36:41.154374899 -0500
@@ -13988,7 +13988,7 @@ $as_echo "$as_me: WARNING: compiler opti
     ac_var_stripped=""
   for word1 in $tmp_CFLAGS; do
     ac_var_strip_word="no"
-    for word2 in $flags_dbg_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_strip_word="yes"
       fi
@@ -14004,7 +14004,7 @@ $as_echo "$as_me: WARNING: compiler opti
     ac_var_stripped=""
   for word1 in $tmp_CPPFLAGS; do
     ac_var_strip_word="no"
-    for word2 in $flags_dbg_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_strip_word="yes"
       fi
@@ -14020,12 +14020,12 @@ $as_echo "$as_me: WARNING: compiler opti
     if test "$want_debug" = "yes"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler accepts debug enabling options" >&5
 $as_echo_n "checking if compiler accepts debug enabling options... " >&6; }
-      tmp_options="$flags_dbg_yes"
+      tmp_options=""
     fi
     if test "$want_debug" = "no"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler accepts debug disabling options" >&5
 $as_echo_n "checking if compiler accepts debug disabling options... " >&6; }
-      tmp_options="$flags_dbg_off"
+      tmp_options=""
     fi
     #
     CPPFLAGS="$tmp_CPPFLAGS"
@@ -14181,7 +14181,7 @@ $as_echo_n "checking if compiler optimiz
 
   ac_var_match_word="no"
   for word1 in $tmp_CFLAGS; do
-    for word2 in $flags_opt_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_match_word="yes"
       fi
@@ -14199,7 +14199,7 @@ $as_echo_n "checking if compiler optimiz
 
   ac_var_match_word="no"
   for word1 in $tmp_CPPFLAGS; do
-    for word2 in $flags_opt_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_match_word="yes"
       fi
@@ -14230,7 +14230,7 @@ $as_echo "$honor_optimize_option" >&6; }
     ac_var_stripped=""
   for word1 in $tmp_CFLAGS; do
     ac_var_strip_word="no"
-    for word2 in $flags_opt_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_strip_word="yes"
       fi
@@ -14246,7 +14246,7 @@ $as_echo "$honor_optimize_option" >&6; }
     ac_var_stripped=""
   for word1 in $tmp_CPPFLAGS; do
     ac_var_strip_word="no"
-    for word2 in $flags_opt_all; do
+    for word2 in ""; do
       if test "$word1" = "$word2"; then
         ac_var_strip_word="yes"
       fi
@@ -14261,12 +14261,12 @@ $as_echo "$honor_optimize_option" >&6; }
       if test "$want_optimize" = "yes"; then
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler accepts optimizer enabling options" >&5
 $as_echo_n "checking if compiler accepts optimizer enabling options... " >&6; }
-        tmp_options="$flags_opt_yes"
+        tmp_options=""
       fi
       if test "$want_optimize" = "no"; then
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler accepts optimizer disabling options" >&5
 $as_echo_n "checking if compiler accepts optimizer disabling options... " >&6; }
-        tmp_options="$flags_opt_off"
+        tmp_options=""
       fi
       CPPFLAGS="$tmp_CPPFLAGS"
       CFLAGS="$tmp_CFLAGS $tmp_options"