2006-06-09 Paolo Carlini <pcarlini@suse.de>

	* acinclude.m4 ([GLIBCXX_CHECK_RANDOM_TR1]): New, check for
	the availability of "/dev/random" and "/dev/urandom".
	* configure.ac: Use it.
	* include/tr1/random (random_device): Implement, a fall-back for
	systems not providing "/dev/random" and "/dev/urandom" included.
	* testsuite/tr1/5_numerical_facilities/random/random_device/
	cons/default.cc: New.
	* testsuite/tr1/5_numerical_facilities/random/random_device/
	cons/token.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/random/random_device/
	requirements/typedefs.cc: Likewise.
	* config.h.in: Regenerate.
	* configure: Likewise.

	* testsuite/tr1/5_numerical_facilities/random/mersenne_twister/
	cons/gen1.cc: Minor tweak, add bool test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114529 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 63 insertions, 0 deletions

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 68e2f6c0d37..1c2698d3524 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -31113,6 +31113,69 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+  # 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.