Index: ntp-4.2.4p4+dfsg/configure
===================================================================
--- ntp-4.2.4p4+dfsg.orig/configure	2008-12-04 10:53:53.755460796 -0600
+++ ntp-4.2.4p4+dfsg/configure	2008-12-04 10:54:08.300533538 -0600
@@ -2619,6 +2619,11 @@
 
 iCFLAGS="$CFLAGS"
 
+cat >>confdefs.h <<\_ACEOF
+#define _GNU_SOURCE 1
+_ACEOF
+
+
 DEPDIR="${am__leading_dot}deps"
 
 ac_config_commands="$ac_config_commands depfiles"
@@ -15798,7 +15803,7 @@
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 15801 "configure"' > conftest.$ac_ext
+  echo '#line 15806 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -18377,11 +18382,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:18380: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:18385: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:18384: \$? = $ac_status" >&5
+   echo "$as_me:18389: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -18667,11 +18672,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:18670: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:18675: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:18674: \$? = $ac_status" >&5
+   echo "$as_me:18679: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -18771,11 +18776,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:18774: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:18779: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:18778: \$? = $ac_status" >&5
+   echo "$as_me:18783: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -21148,7 +21153,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 21151 "configure"
+#line 21156 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -21248,7 +21253,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 21251 "configure"
+#line 21256 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -23649,11 +23654,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:23652: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:23657: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:23656: \$? = $ac_status" >&5
+   echo "$as_me:23661: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -23753,11 +23758,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:23756: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:23761: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:23760: \$? = $ac_status" >&5
+   echo "$as_me:23765: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -25351,11 +25356,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:25354: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:25359: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:25358: \$? = $ac_status" >&5
+   echo "$as_me:25363: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -25455,11 +25460,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:25458: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:25463: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:25462: \$? = $ac_status" >&5
+   echo "$as_me:25467: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -27675,11 +27680,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:27678: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:27683: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:27682: \$? = $ac_status" >&5
+   echo "$as_me:27687: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -27965,11 +27970,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:27968: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:27973: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:27972: \$? = $ac_status" >&5
+   echo "$as_me:27977: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -28069,11 +28074,11 @@
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:28072: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:28077: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:28076: \$? = $ac_status" >&5
+   echo "$as_me:28081: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
Index: ntp-4.2.4p4+dfsg/configure.ac
===================================================================
--- ntp-4.2.4p4+dfsg.orig/configure.ac	2008-12-04 10:52:42.242180500 -0600
+++ ntp-4.2.4p4+dfsg/configure.ac	2008-12-04 10:53:12.412406268 -0600
@@ -20,6 +20,9 @@
 dnl Grab any initial CFLAGS so we can pick better defaults.
 iCFLAGS="$CFLAGS"
 
+dnl Define _GNU_SOURCE, this should be done before any feature test.
+AC_DEFINE(_GNU_SOURCE)
+
 dnl check these early to avoid autoconf warnings
 AC_AIX
 AC_MINIX