+rm -f conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:11375: result: $cf_cv_gnu_dftsrc_219" >&5
+echo "${ECHO_T}$cf_cv_gnu_dftsrc_219" >&6
+ test "x$cf_cv_gnu_dftsrc_219" = "xyes" || CPPFLAGS="$cf_save"
+ else
+ cf_cv_gnu_dftsrc_219=maybe
+ fi
+
+ if test "x$cf_cv_gnu_dftsrc_219" != xyes; then
+
+ echo "$as_me:11384: checking if we must define _GNU_SOURCE" >&5
+echo $ECHO_N "checking if we must define _GNU_SOURCE... $ECHO_C" >&6
+if test "${cf_cv_gnu_source+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ cat >conftest.$ac_ext <<_ACEOF
+#line 11391 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+int
+main (void)
+{
+
+ #ifndef _XOPEN_SOURCE
+ #error expected _XOPEN_SOURCE to be defined
+ #endif
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:11406: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:11409: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:11412: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:11415: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_cv_gnu_source=no
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_save="$CPPFLAGS"
+
+cf_fix_cppflags=no
+cf_new_cflags=
+cf_new_cppflags=
+cf_new_extra_cppflags=
+
+for cf_add_cflags in -D_GNU_SOURCE
+do
+case $cf_fix_cppflags in
+(no)
+ case $cf_add_cflags in
+ (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
+ case $cf_add_cflags in
+ (-D*)
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[^=]*='\''\"[^"]*//'`
+
+ test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=yes
+
+ if test $cf_fix_cppflags = yes ; then
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ continue
+ elif test "${cf_tst_cflags}" = "\"'" ; then
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ continue
+ fi
+ ;;
+ esac
+ case "$CPPFLAGS" in
+ (*$cf_add_cflags)
+ ;;
+ (*)
+ case $cf_add_cflags in
+ (-D*)
+ cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
+
+CPPFLAGS=`echo "$CPPFLAGS" | \
+ sed -e 's/-[UD]'"$cf_tst_cppflags"'\(=[^ ]*\)\?[ ]/ /g' \
+ -e 's/-[UD]'"$cf_tst_cppflags"'\(=[^ ]*\)\?$//g'`
+
+ ;;
+ esac
+
+ test -n "$cf_new_cppflags" && cf_new_cppflags="$cf_new_cppflags "
+ cf_new_cppflags="${cf_new_cppflags}$cf_add_cflags"
+
+ ;;
+ esac
+ ;;
+ (*)
+
+ test -n "$cf_new_cflags" && cf_new_cflags="$cf_new_cflags "
+ cf_new_cflags="${cf_new_cflags}$cf_add_cflags"
+
+ ;;
+ esac
+ ;;
+(yes)
+
+ test -n "$cf_new_extra_cppflags" && cf_new_extra_cppflags="$cf_new_extra_cppflags "
+ cf_new_extra_cppflags="${cf_new_extra_cppflags}$cf_add_cflags"
+
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[^"]*"'\''//'`
+
+ test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=no
+ ;;
+esac
+done
+
+if test -n "$cf_new_cflags" ; then
+
+ test -n "$CFLAGS" && CFLAGS="$CFLAGS "
+ CFLAGS="${CFLAGS}$cf_new_cflags"
+
+fi
+
+if test -n "$cf_new_cppflags" ; then
+
+ test -n "$CPPFLAGS" && CPPFLAGS="$CPPFLAGS "
+ CPPFLAGS="${CPPFLAGS}$cf_new_cppflags"