random: Add include checks for c++11 and <cstdint>.

2012-09-26  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/ext/random: Add include checks for c++11 and <cstdint>.

From-SVN: r191792

libstdc++-v3/ChangeLog

+2012-09-26  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* include/ext/random: Add include checks for c++11 and <cstdint>.
+
 2012-09-26  Benjamin Kosnik  <bkoz@redhat.com>
 
        PR libstdc++/54314

libstdc++-v3/include/ext/random

@@ -31,12 +31,17 @@
 
 #pragma GCC system_header
 
+#ifndef __GXX_EXPERIMENTAL_CXX0X__
+# include <bits/c++0x_warning.h>
+#else
+
 #include <random>
 #include <array>
 #ifdef __SSE2__
 # include <x86intrin.h>
 #endif
 
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
 
 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
 {
@@ -1846,4 +1851,8 @@ _GLIBCXX_END_NAMESPACE_VERSION
 #include "opt_random.h"
 #include "random.tcc"
 
-#endif /* _EXT_RANDOM */
+#endif // _GLIBCXX_USE_C99_STDINT_TR1
+
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+#endif // _EXT_RANDOM