#ifndef HSVERSIONS_H
#define HSVERSIONS_H

#if 0

IMPORTANT!  If you put extra tabs/spaces in these macro definitions,
you will screw up the layout where they are used in case expressions!

(This is cpp-dependent, of course)

#endif

/* Useful in the headers that we share with the RTS */
#define COMPILING_GHC 1

/* Pull in all the platform defines for this build (foo_TARGET_ARCH etc.) */
#include "ghc_boot_platform.h"

/* Pull in the autoconf defines (HAVE_FOO), but don't include
 * ghcconfig.h, because that will include ghcplatform.h which has the
 * wrong platform settings for the compiler (it has the platform
 * settings for the target plat instead). */
#include "../includes/ghcautoconf.h"

#if !defined(__GLASGOW_HASKELL__) || __GLASGOW_HASKELL__ >= 602
#define SYSTEM_IO_ERROR System.IO.Error
#else
#define SYSTEM_IO_ERROR System.IO
#endif

/* Global variables may not work in other Haskell implementations,
 * but we need them currently! so the conditional on GLASGOW won't do. */
#if defined(__GLASGOW_HASKELL__) || !defined(__GLASGOW_HASKELL__)
#define GLOBAL_VAR(name,value,ty)  \
name = Util.global (value) :: IORef (ty); \
{-# NOINLINE name #-}
#endif

#define COMMA ,

#ifdef DEBUG
#define debugIsOn True
#define ASSERT(e) if (not (e)) then (assertPanic __FILE__ __LINE__) else
#define ASSERT2(e,msg) if (not (e)) then (assertPprPanic __FILE__ __LINE__ (msg)) else
#define WARN( e, msg ) (warnPprTrace (e) __FILE__ __LINE__ (msg))
#define ASSERTM(mbool) do { bool <- mbool; ASSERT(bool) return () }
#define ASSERTM2(mbool,msg) do { bool <- mbool; ASSERT2(bool,msg) return () }
#else
#define debugIsOn False
-- We have to actually use all the variables we are given or we may get
-- unused variable warnings when DEBUG is off.
#define ASSERT(e)      if False && (not (e)) then panic "ASSERT" else
#define ASSERT2(e,msg) if False && (not (e)) then pprPanic "ASSERT2" (msg) else
#define ASSERTM(e)       do { let { _mbool = (e) } }
-- Here we deliberately don't use when as Control.Monad might not be imported
#define ASSERTM2(e,msg)  do { let { _mbool = (e) }; if False then panic "ASSERTM2" else return () }
#define WARN(e,msg)    if False && (e) then pprPanic "WARN" (msg) else
#endif

-- This conditional lets us switch off the "import FastString"
-- when compiling FastString itself, or when compiling modules that
-- don't use it (and would otherwise get warnings, which we treat
-- as errors). Can we do this more nicely?
#if !defined(COMPILING_FAST_STRING) && !defined(FAST_STRING_NOT_NEEDED)
-- 
import qualified FastString as FS 
#endif

#if defined(__GLASGOW_HASKELL__)
#define SLIT(x)	 (FS.mkLitString# (x#))
#define FSLIT(x) (FS.mkFastString# (x#))
#else
#define SLIT(x)  (FS.mkLitString (x))
#define FSLIT(x) (FS.mkFastString (x))
#endif

-- Useful for declaring arguments to be strict
#define STRICT1(f) f a | a `seq` False = undefined
#define STRICT2(f) f a b | a `seq` b `seq` False = undefined
#define STRICT3(f) f a b c | a `seq` b `seq` c `seq` False = undefined
#define STRICT4(f) f a b c d | a `seq` b `seq` c `seq` d `seq` False = undefined
#define STRICT5(f) f a b c d e | a `seq` b `seq` c `seq` d `seq` e `seq` False = undefined
#define STRICT6(f) f a b c d e f | a `seq` b `seq` c `seq` d `seq` e `seq` f `seq` False = undefined

#endif /* HsVersions.h */