- (dtucker) [configure.ac defines.h] Test for fd_mask, howmany and NFDBITS

   rather than trying to enumerate the plaforms that don't have them.
   Based on a patch from Nathan Osman, with help from tim@.

1 files changed, 11 insertions, 13 deletions

diff --git a/defines.h b/defines.h
index 64515c2f..d5ce52f3 100644
--- a/defines.h
+++ b/defines.h
@@ -25,7 +25,7 @@
 #ifndef _DEFINES_H
 #define _DEFINES_H
 
-/* $Id: defines.h,v 1.171 2013/03/07 09:06:13 dtucker Exp $ */
+/* $Id: defines.h,v 1.172 2013/06/01 21:18:48 dtucker Exp $ */
 
 
 /* Constants */
@@ -171,11 +171,6 @@ enum
 # define MAP_FAILED ((void *)-1)
 #endif
 
-/* *-*-nto-qnx doesn't define this constant in the system headers */
-#ifdef MISSING_NFDBITS
-# define	NFDBITS (8 * sizeof(unsigned long))
-#endif
-
 /*
 SCO Open Server 3 has INADDR_LOOPBACK defined in rpc/rpc.h but
 including rpc/rpc.h breaks Solaris 6
@@ -355,11 +350,19 @@ struct winsize {
 };
 #endif
 
-/* *-*-nto-qnx does not define this type in the system headers */
-#ifdef MISSING_FD_MASK
+/* bits needed for select that may not be in the system headers */
+#ifndef HAVE_FD_MASK
  typedef unsigned long int	fd_mask;
 #endif
 
+#if defined(HAVE_DECL_NFDBITS) && HAVE_DECL_NFDBITS == 0
+# define	NFDBITS (8 * sizeof(unsigned long))
+#endif
+
+#if defined(HAVE_DECL_HOWMANY) && HAVE_DECL_HOWMANY == 0
+# define howmany(x,y)	(((x)+((y)-1))/(y))
+#endif
+
 /* Paths */
 
 #ifndef _PATH_BSHELL
@@ -484,11 +487,6 @@ struct winsize {
 # define __nonnull__(x)
 #endif
 
-/* *-*-nto-qnx doesn't define this macro in the system headers */
-#ifdef MISSING_HOWMANY
-# define howmany(x,y)	(((x)+((y)-1))/(y))
-#endif
-
 #ifndef OSSH_ALIGNBYTES
 #define OSSH_ALIGNBYTES	(sizeof(int) - 1)
 #endif