+ # For dev/random and dev/urandom for TR1.
+
+
+ echo "$as_me:$LINENO: checking for \"dev/random\" and \"dev/urandom\" for TR1 random_device" >&5
+echo $ECHO_N "checking for \"dev/random\" and \"dev/urandom\" for TR1 random_device... $ECHO_C" >&6
+ if test "${ac_random_tr1+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ if test "$cross_compiling" = yes; then
+ ac_random_tr1=no
+else
+ cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <stdio.h>
+ int main()
+ {
+ return !(fopen("/dev/random", "r")
+ && fopen("/dev/urandom", "r"));
+ }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_random_tr1=yes
+else
+ echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_random_tr1=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+
+fi
+
+ echo "$as_me:$LINENO: result: $ac_random_tr1" >&5
+echo "${ECHO_T}$ac_random_tr1" >&6
+ if test x"$ac_random_tr1" = x"yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_RANDOM_TR1 1
+_ACEOF
+
+ fi
+
+
+
# For TLS support.
# Check whether --enable-tls or --disable-tls was given.