+if test -n "$cf_XOPEN_SOURCE" && test -z "$cf_cv_xopen_source" ; then
+ echo "$as_me:8007: checking if _XOPEN_SOURCE really is set" >&5
+echo $ECHO_N "checking if _XOPEN_SOURCE really is set... $ECHO_C" >&6
+ cat >conftest.$ac_ext <<_ACEOF
+#line 8010 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+int
+main ()
+{
+
+#ifndef _XOPEN_SOURCE
+make an error
+#endif
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:8025: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:8028: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:8031: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:8034: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_XOPEN_SOURCE_set=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_XOPEN_SOURCE_set=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ echo "$as_me:8043: result: $cf_XOPEN_SOURCE_set" >&5
+echo "${ECHO_T}$cf_XOPEN_SOURCE_set" >&6
+ if test $cf_XOPEN_SOURCE_set = yes
+ then
+ cat >conftest.$ac_ext <<_ACEOF
+#line 8048 "configure"
+#include "confdefs.h"
+#include <stdlib.h>
+int
+main ()
+{
+
+#if (_XOPEN_SOURCE - 0) < $cf_XOPEN_SOURCE
+make an error
+#endif
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:8063: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:8066: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:8069: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:8072: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_XOPEN_SOURCE_set_ok=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_XOPEN_SOURCE_set_ok=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ if test $cf_XOPEN_SOURCE_set_ok = no
+ then
+ { echo "$as_me:8083: WARNING: _XOPEN_SOURCE is lower than requested" >&5
+echo "$as_me: WARNING: _XOPEN_SOURCE is lower than requested" >&2;}
+ fi
+ else
+
+echo "$as_me:8088: checking if we should define _XOPEN_SOURCE" >&5
+echo $ECHO_N "checking if we should define _XOPEN_SOURCE... $ECHO_C" >&6
+if test "${cf_cv_xopen_source+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ cat >conftest.$ac_ext <<_ACEOF
+#line 8095 "configure"
+#include "confdefs.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+int
+main ()
+{
+
+#ifndef _XOPEN_SOURCE
+make an error
+#endif
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:8114: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:8117: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:8120: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:8123: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_cv_xopen_source=no
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_save="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=$cf_XOPEN_SOURCE"
+ cat >conftest.$ac_ext <<_ACEOF
+#line 8132 "configure"
+#include "confdefs.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+int
+main ()
+{
+
+#ifdef _XOPEN_SOURCE
+make an error
+#endif
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:8151: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:8154: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:8157: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:8160: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ cf_cv_xopen_source=no
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+cf_cv_xopen_source=$cf_XOPEN_SOURCE
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ CPPFLAGS="$cf_save"
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:8175: result: $cf_cv_xopen_source" >&5
+echo "${ECHO_T}$cf_cv_xopen_source" >&6
+
+if test "$cf_cv_xopen_source" != no ; then
+
+CFLAGS=`echo "$CFLAGS" | \
+ sed -e 's/-[UD]'"_XOPEN_SOURCE"'\(=[^ ]*\)\?[ ]/ /g' \
+ -e 's/-[UD]'"_XOPEN_SOURCE"'\(=[^ ]*\)\?$//g'`
+
+CPPFLAGS=`echo "$CPPFLAGS" | \
+ sed -e 's/-[UD]'"_XOPEN_SOURCE"'\(=[^ ]*\)\?[ ]/ /g' \
+ -e 's/-[UD]'"_XOPEN_SOURCE"'\(=[^ ]*\)\?$//g'`
+
+ cf_temp_xopen_source="-D_XOPEN_SOURCE=$cf_cv_xopen_source"
+
+cf_fix_cppflags=no
+cf_new_cflags=
+cf_new_cppflags=
+cf_new_extra_cppflags=
+
+for cf_add_cflags in $cf_temp_xopen_source
+do
+case $cf_fix_cppflags in
+no)
+ case $cf_add_cflags in #(vi
+ -undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C) #(vi
+ case $cf_add_cflags in
+ -D*)
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[^=]*='\''\"[^"]*//'`
+
+ test "${cf_add_cflags}" != "${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=yes
+
+ if test $cf_fix_cppflags = yes ; then
+ cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
+ continue
+ elif test "${cf_tst_cflags}" = "\"'" ; then
+ cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
+ continue
+ fi
+ ;;
+ esac
+ case "$CPPFLAGS" in
+ *$cf_add_cflags) #(vi
+ ;;
+ *) #(vi
+ case $cf_add_cflags in #(vi
+ -D*)
+ cf_tst_cppflags=`echo "x$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"'\(=[^ ]*\)\?$//g'`
+
+ ;;
+ esac
+ cf_new_cppflags="$cf_new_cppflags $cf_add_cflags"
+ ;;
+ esac
+ ;;
+ *)
+ cf_new_cflags="$cf_new_cflags $cf_add_cflags"
+ ;;
+ esac
+ ;;
+yes)
+ cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
+
+ cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[^"]*"'\''//'`
+
+ test "${cf_add_cflags}" != "${cf_tst_cflags}" \
+ && test -z "${cf_tst_cflags}" \
+ && cf_fix_cppflags=no
+ ;;
+esac
+done
+
+if test -n "$cf_new_cflags" ; then
+
+ CFLAGS="$CFLAGS $cf_new_cflags"
+fi
+
+if test -n "$cf_new_cppflags" ; then
+
+ CPPFLAGS="$CPPFLAGS $cf_new_cppflags"
+fi
+
+if test -n "$cf_new_extra_cppflags" ; then
+
+ EXTRA_CPPFLAGS="$cf_new_extra_cppflags $EXTRA_CPPFLAGS"
+fi
+
+fi
+
+ fi
+fi
+