From 013a3e3b79a86e377c6c94b34f6313d58363c6b3 Mon Sep 17 00:00:00 2001
From: Ian Lynagh <igloo@earth.li>
Date: Wed, 19 Oct 2011 01:58:54 +0100
Subject: Revert "Remove OSUnknown"

This reverts commit f75f26cc4eed3c3cfc256ebfb9e77b8e82a766fc.

On second thoughts, this does make sense, for unregisterised via-C
OSes at least.
---
 compiler/utils/Platform.hs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'compiler/utils/Platform.hs')

diff --git a/compiler/utils/Platform.hs b/compiler/utils/Platform.hs
index 7446fc1099..362d7822d0 100644
--- a/compiler/utils/Platform.hs
+++ b/compiler/utils/Platform.hs
@@ -48,9 +48,11 @@ data Arch
         deriving (Show, Eq)
 
 
--- | Operating systems that we know about.
+-- | Operating systems that the native code generator knows about.
+--      Having OSUnknown should produce a sensible default, but no promises.
 data OS
-        = OSLinux
+        = OSUnknown
+        | OSLinux
         | OSDarwin
         | OSSolaris2
         | OSMinGW32
@@ -94,6 +96,7 @@ osElfTarget OSOpenBSD  = True
 osElfTarget OSSolaris2 = True
 osElfTarget OSDarwin   = False
 osElfTarget OSMinGW32  = False
+osElfTarget OSUnknown  = panic "Don't know if OSUnknown is elf"
 
 
 -- | This is the target platform as far as the #ifdefs are concerned.
@@ -139,7 +142,7 @@ defaultTargetOS = OSFreeBSD
 #elif openbsd_TARGET_OS
 defaultTargetOS = OSOpenBSD
 #else
-#error Unknown OS
+defaultTargetOS = OSUnknown
 #endif
 
 #if arm_TARGET_ARCH
-- 
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