(LIBC_CANCEL_ASYNC): Also define for librt. (LIBC_CANCEL_RESET): Like…

…wise. Declare __librt_enable_asynccancel and __librt_disable_asynccancel.

nptl/pthreadP.h

@@ -152,6 +152,14 @@ __do_cancel (void)
 # define LIBC_CANCEL_HANDLED() \
   __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
   __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
+#elif defined NOT_IN_libc && defined IS_IN_librt
+# define LIBC_CANCEL_ASYNC() \
+  __librt_enable_asynccancel ()
+# define LIBC_CANCEL_RESET(val) \
+  __librt_disable_asynccancel (val)
+# define LIBC_CANCEL_HANDLED() \
+  __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \
+  __asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel")
 #else
 # define LIBC_CANCEL_ASYNC()	0 /* Just a dummy value.  */
 # define LIBC_CANCEL_RESET(val)	((void)(val)) /* Nothing, but evaluate it.  */
@@ -342,6 +350,12 @@ extern int __libc_enable_asynccancel (void) attribute_hidden;
 extern void __libc_disable_asynccancel (int oldtype)
      internal_function attribute_hidden;
 
+
+/* The two functions are in librt.so and not exported.  */
+extern int __librt_enable_asynccancel (void) attribute_hidden;
+extern void __librt_disable_asynccancel (int oldtype)
+     internal_function attribute_hidden;
+
 #ifdef IS_IN_libpthread
 /* Special versions which use non-exported functions.  */
 extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,