<ucontext.h>: Conditionalize prototypes for {get,set,make,swap}context().

They are gone per OpenGroup Specifications Issue 7.

However, keep them visible in our default environment.

diff --git a/sys/sys/ucontext.h b/sys/sys/ucontext.h
index cf7d160..fa31f42 100644 (file)
--- a/sys/sys/ucontext.h
+++ b/sys/sys/ucontext.h
@@ -57,10 +57,12 @@ typedef struct __ucontext {
  
 __BEGIN_DECLS
   
+#if __BSD_VISIBLE || __POSIX_VISIBLE < 200809
 int    getcontext(ucontext_t *);
 int    setcontext(const ucontext_t *);
 void   makecontext(ucontext_t *, void (*)(void), int, ...);
 int    swapcontext(ucontext_t *, const ucontext_t *);
+#endif
    
 __END_DECLS