# include <nptl/pthreadP.h>
#endif
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
/* Allow hacking in some extra code if desired. */
#ifndef PSEUDO_EXTRA
# ifdef IS_IN_libpthread
# define CENABLE jal __pthread_enable_asynccancel
# define CDISABLE jal __pthread_disable_asynccancel
-# elif defined IS_IN_librt
+# elif IS_IN (librt)
# define CENABLE jal __librt_enable_asynccancel
# define CDISABLE jal __librt_disable_asynccancel
# else