[project @ 2001-08-14 13:40:07 by sewardj]

Change the story about POSIX headers in C compilation.

Until now, all C code in the RTS and library cbits has by default been
compiled with settings for POSIXness enabled, that is:
   #define _POSIX_SOURCE   1
   #define _POSIX_C_SOURCE 199309L
   #define _ISOC9X_SOURCE
If you wanted to negate this, you'd have to define NON_POSIX_SOURCE
before including headers.

This scheme has some bad effects:

* It means that ccall-unfoldings exported via interfaces from a
  module compiled with -DNON_POSIX_SOURCE may not compile when
  imported into a module which does not -DNON_POSIX_SOURCE.

* It overlaps with the feature tests we do with autoconf.

* It seems to have caused borkage in the Solaris builds for some
  considerable period of time.

The New Way is:

* The default changes to not-being-in-Posix mode.

* If you want to force a C file into Posix mode, #include as
  the **first** include the new file ghc/includes/PosixSource.h.
  Most of the RTS C sources have this include now.

* NON_POSIX_SOURCE is almost totally expunged.  Unfortunately
  we have to retain some vestiges of it in ghc/compiler so that
  modules compiled via C on Solaris using older compilers don't
  break.

1 files changed, 3 insertions, 6 deletions

diff --git a/ghc/lib/std/cbits/inputReady.c b/ghc/lib/std/cbits/inputReady.c
index 5ab2991987..69737c583b 100644
--- a/ghc/lib/std/cbits/inputReady.c
+++ b/ghc/lib/std/cbits/inputReady.c
@@ -1,16 +1,13 @@
 /* 
  * (c) The GRASP/AQUA Project, Glasgow University, 1994-1998
  *
- * $Id: inputReady.c,v 1.8 2001/07/09 16:30:50 sof Exp $
+ * $Id: inputReady.c,v 1.9 2001/08/14 13:40:08 sewardj Exp $
  *
  * hReady Runtime Support
  */
 
-/* select and supporting types is not */
-#ifndef _AIX
-#define NON_POSIX_SOURCE  
-#endif
-
+/* select and supporting types is not Posix */
+/* #include "PosixSource.h" */
 #include "HsStd.h"
 
 /*